diff --git a/bids-validator/package.json b/bids-validator/package.json
index cb856049b..9f0e8fb22 100644
--- a/bids-validator/package.json
+++ b/bids-validator/package.json
@@ -30,6 +30,7 @@
     "hed-validator": "^2.0.1",
     "ignore": "^4.0.2",
     "is-utf8": "^0.2.1",
+    "js-yaml": "^3.14.0",
     "jshint": "^2.9.6",
     "lerna": "^3.15.0",
     "minimatch": "3.0.4",
diff --git a/bids-validator/schemas/associated_data.yaml b/bids-validator/schemas/associated_data.yaml
new file mode 100644
index 000000000..b54ca34fb
--- /dev/null
+++ b/bids-validator/schemas/associated_data.yaml
@@ -0,0 +1,9 @@
+---
+- code/:
+    - required: false
+- derivatives/:
+    - required: false
+- sourcedata/:
+    - required: false
+- stimuli/:
+    - required: false
diff --git a/bids-validator/schemas/auxdatatypes/channels.yaml b/bids-validator/schemas/auxdatatypes/channels.yaml
new file mode 100644
index 000000000..f5b412824
--- /dev/null
+++ b/bids-validator/schemas/auxdatatypes/channels.yaml
@@ -0,0 +1,16 @@
+---
+- datatypes:
+    - meg
+    - eeg
+    - ieeg
+  suffixes:
+    - channels
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    sub: required
+    ses: optional
+    task: required
+    acq: optional
+    run: optional
diff --git a/bids-validator/schemas/auxdatatypes/electrodes.yaml b/bids-validator/schemas/auxdatatypes/electrodes.yaml
new file mode 100644
index 000000000..b630ad589
--- /dev/null
+++ b/bids-validator/schemas/auxdatatypes/electrodes.yaml
@@ -0,0 +1,14 @@
+---
+- datatypes:
+    - eeg
+    - ieeg
+  suffixes:
+    - electrodes
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    sub: required
+    ses: optional
+    acq: optional
+    space: optional
diff --git a/bids-validator/schemas/auxdatatypes/events.yaml b/bids-validator/schemas/auxdatatypes/events.yaml
new file mode 100644
index 000000000..34a0d7943
--- /dev/null
+++ b/bids-validator/schemas/auxdatatypes/events.yaml
@@ -0,0 +1,16 @@
+---
+- datatypes:
+    - meg
+    - eeg
+    - ieeg
+  suffixes:
+    - events
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    sub: required
+    ses: optional
+    task: required
+    acq: optional
+    run: optional
diff --git a/bids-validator/schemas/auxdatatypes/photo.yaml b/bids-validator/schemas/auxdatatypes/photo.yaml
new file mode 100644
index 000000000..e104d04aa
--- /dev/null
+++ b/bids-validator/schemas/auxdatatypes/photo.yaml
@@ -0,0 +1,13 @@
+---
+- datatypes:
+    - meg
+    - eeg
+    - ieeg
+  suffixes:
+    - photo
+  extensions:
+    - .jpg
+  entities:
+    sub: required
+    ses: optional
+    acq: optional
diff --git a/bids-validator/schemas/datatypes/anat.yaml b/bids-validator/schemas/datatypes/anat.yaml
new file mode 100644
index 000000000..764f26cb2
--- /dev/null
+++ b/bids-validator/schemas/datatypes/anat.yaml
@@ -0,0 +1,173 @@
+---
+# First group
+- suffixes:
+    - T1w
+    - T2w
+    - PDw
+    - T2starw
+    - FLAIR
+    - inplaneT1
+    - inplaneT2
+    - PDT2
+    - angio
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    part: optional
+# Second group
+- suffixes:
+    - T1map
+    - T2map
+    - T2starmap
+    - R1map
+    - R2map
+    - R2starmap
+    - PDmap
+    - MTRmap
+    - MTsat
+    - UNIT1
+    - T1rho
+    - MWFmap
+    - MTVmap
+    - PDT2map
+    - Chimap
+    - TB1map
+    - RB1map
+    - S0map
+    - M0map
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+# Third group
+- suffixes:
+    - defacemask
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    modality: optional
+# Fourth group
+- suffixes:
+    - MESE
+    - MEGRE
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    echo: required
+    part: optional
+# Fifth group
+- suffixes:
+    - VFA
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    flip: required
+    part: optional
+# Sixth group
+- suffixes:
+    - IRT1
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    inversion: required
+    part: optional
+# Seventh group
+- suffixes:
+    - MP2RAGE
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    echo: optional
+    flip: required
+    inversion: required
+    part: optional
+# Eighth group
+- suffixes:
+    - MPM
+    - MTS
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    echo: optional
+    flip: required
+    mtransfer: required
+    part: optional
+# Nineth group
+- suffixes:
+    - MTR
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    mtransfer: required
+    part: optional
diff --git a/bids-validator/schemas/datatypes/beh.yaml b/bids-validator/schemas/datatypes/beh.yaml
new file mode 100644
index 000000000..d9de3cd0d
--- /dev/null
+++ b/bids-validator/schemas/datatypes/beh.yaml
@@ -0,0 +1,28 @@
+---
+# First group
+- suffixes:
+    - stim
+    - physio
+  extensions:
+    - .tsv.gz
+    - .json
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+    recording: optional
+# Second group
+- suffixes:
+    - events
+    - beh
+  extensions:
+    - .tsv
+    - .json
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
diff --git a/bids-validator/schemas/datatypes/dwi.yaml b/bids-validator/schemas/datatypes/dwi.yaml
new file mode 100644
index 000000000..8d0fbb931
--- /dev/null
+++ b/bids-validator/schemas/datatypes/dwi.yaml
@@ -0,0 +1,31 @@
+---
+# First group
+- suffixes:
+    - dwi
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+    - .bvec
+    - .bval
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    direction: optional
+    run: optional
+    part: optional
+# Second group
+- suffixes:
+    - sbref
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    direction: optional
+    run: optional
+    part: optional
diff --git a/bids-validator/schemas/datatypes/eeg.yaml b/bids-validator/schemas/datatypes/eeg.yaml
new file mode 100644
index 000000000..60178177d
--- /dev/null
+++ b/bids-validator/schemas/datatypes/eeg.yaml
@@ -0,0 +1,66 @@
+---
+- suffixes:
+    - eeg
+  extensions:
+    - .json
+    - .edf
+    - .vhdr
+    - .vmrk
+    - .eeg
+    - .set
+    - .fdt
+    - .bdf
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - channels
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - coordsystem
+  extensions:
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+- suffixes:
+    - electrodes
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    space: optional
+- suffixes:
+    - events
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - photo
+  extensions:
+    - .jpg
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
diff --git a/bids-validator/schemas/datatypes/fmap.yaml b/bids-validator/schemas/datatypes/fmap.yaml
new file mode 100644
index 000000000..1eb84f7e5
--- /dev/null
+++ b/bids-validator/schemas/datatypes/fmap.yaml
@@ -0,0 +1,67 @@
+---
+# First group
+- suffixes:
+    - phasediff
+    - phase1
+    - phase2
+    - magnitude1
+    - magnitude2
+    - magnitude
+    - fieldmap
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    run: optional
+# Second group
+- suffixes:
+    - epi
+    - m0scan
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    ceagent: optional
+    direction: required
+    run: optional
+# Third group
+- suffixes:
+    - TB1DAM
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    flip: required
+    part: optional
+# Fourth group
+- suffixes:
+    - TB1EPI
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    run: optional
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    echo: required
+    flip: required
+    part: optional
diff --git a/bids-validator/schemas/datatypes/func.yaml b/bids-validator/schemas/datatypes/func.yaml
new file mode 100644
index 000000000..653b86d08
--- /dev/null
+++ b/bids-validator/schemas/datatypes/func.yaml
@@ -0,0 +1,69 @@
+---
+# First group
+- suffixes:
+    - bold
+    - cbv
+    - sbref
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    direction: optional
+    run: optional
+    echo: optional
+    part: optional
+# Second group
+- suffixes:
+    - phase
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    direction: optional
+    run: optional
+    echo: optional
+# Third group
+- suffixes:
+    - events
+  extensions:
+    - .tsv
+    - .json
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    ceagent: optional
+    reconstruction: optional
+    direction: optional
+    run: optional
+    echo: optional
+# Fourth group
+- suffixes:
+    - physio
+    - stim
+  extensions:
+    - .tsv.gz
+    - .json
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    reconstruction: optional
+    run: optional
+    recording: optional
diff --git a/bids-validator/schemas/datatypes/ieeg.yaml b/bids-validator/schemas/datatypes/ieeg.yaml
new file mode 100644
index 000000000..50c060e35
--- /dev/null
+++ b/bids-validator/schemas/datatypes/ieeg.yaml
@@ -0,0 +1,67 @@
+---
+- suffixes:
+    - ieeg
+  extensions:
+    - .mefd/
+    - .json
+    - .edf
+    - .vhdr
+    - .eeg
+    - .vmrk
+    - .set
+    - .fdt
+    - .nwb
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - channels
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - coordsystem
+  extensions:
+    - .json
+  entities:
+    subject: required
+    session: optional
+    space: optional
+- suffixes:
+    - electrodes
+  extensions:
+    # No json, since electrodes.tsv uses coordsystem.json for metadata
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    space: optional
+    acquisition: optional
+- suffixes:
+    - events
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - photo
+  extensions:
+    - .jpg
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
diff --git a/bids-validator/schemas/datatypes/meg.yaml b/bids-validator/schemas/datatypes/meg.yaml
new file mode 100644
index 000000000..b2c1e3e8e
--- /dev/null
+++ b/bids-validator/schemas/datatypes/meg.yaml
@@ -0,0 +1,85 @@
+---
+# First group
+- suffixes:
+    - meg
+  extensions:
+    - /  # corresponds to BTi/4D data
+    - .ds/
+    - .json
+    - .fif
+    - .sqd
+    - .con
+    - .raw
+    - .ave
+    - .mrk
+    - .kdf
+    - .mhd
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+    processing: optional
+    split: optional
+# Second group
+- suffixes:
+    - headshape
+  extensions:
+    - "*"
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+# Third group
+- suffixes:
+    - markers
+  extensions:
+    - .sqd
+    - .mrk
+  entities:
+    subject: required
+    session: optional
+    task: optional
+    acquisition: optional
+    space: optional
+# Fourth
+- suffixes:
+    - coordsystem
+  extensions:
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+- suffixes:
+    - channels
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+    processing: optional
+- suffixes:
+    - events
+  extensions:
+    - .json
+    - .tsv
+  entities:
+    subject: required
+    session: optional
+    task: required
+    acquisition: optional
+    run: optional
+- suffixes:
+    - photo
+  extensions:
+    - .jpg
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
diff --git a/bids-validator/schemas/datatypes/perf.yaml b/bids-validator/schemas/datatypes/perf.yaml
new file mode 100644
index 000000000..be6542071
--- /dev/null
+++ b/bids-validator/schemas/datatypes/perf.yaml
@@ -0,0 +1,40 @@
+---
+# First group
+- suffixes:
+    - asl
+    - m0scan
+  extensions:
+    - .nii.gz
+    - .nii
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    reconstruction: optional
+    direction: optional
+    run: optional
+# Second group
+- suffixes:
+    - aslcontext
+  extensions:
+    - .tsv
+    - .json
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    reconstruction: optional
+    direction: optional
+    run: optional
+# Third group
+- suffixes:
+    - asllabeling
+  extensions:
+    - .jpg
+  entities:
+    subject: required
+    session: optional
+    acquisition: optional
+    reconstruction: optional
+    run: optional
diff --git a/bids-validator/schemas/entities.yaml b/bids-validator/schemas/entities.yaml
new file mode 100644
index 000000000..566cf53fd
--- /dev/null
+++ b/bids-validator/schemas/entities.yaml
@@ -0,0 +1,254 @@
+---
+subject:
+  name: Subject
+  entity: sub
+  description: |
+    A person or animal participating in the study.
+  format: label
+session:
+  name: Session
+  entity: ses
+  description: |
+    A logical grouping of neuroimaging and behavioral data consistent across
+    subjects.
+    Session can (but doesn't have to) be synonymous to a visit in a
+    longitudinal study.
+    In general, subjects will stay in the scanner during one session.
+    However, for example, if a subject has to leave the scanner room and then
+    be re-positioned on the scanner bed, the set of MRI acquisitions will still
+    be considered as a session and match sessions acquired in other subjects.
+    Similarly, in situations where different data types are obtained over
+    several visits (for example fMRI on one day followed by DWI the day after)
+    those can be grouped in one session.
+    Defining multiple sessions is appropriate when several identical or similar
+    data acquisitions are planned and performed on all -or most- subjects,
+    often in the case of some intervention between sessions
+    (for example, training).
+  format: label
+task:
+  name: Task
+  entity: task
+  format: label
+  description: |
+    Each task has a unique label that MUST only consist of letters and/or
+    numbers (other characters, including spaces and underscores, are not
+    allowed).
+    Those labels MUST be consistent across subjects and sessions.
+acquisition:
+  name: Acquisition
+  entity: acq
+  description: |
+    The `acq-<label>` key/value pair corresponds to a custom label the
+    user MAY use to distinguish a different set of parameters used for
+    acquiring the same modality.
+    For example this should be used when a study includes two T1w images - one
+    full brain low resolution and and one restricted field of view but high
+    resolution.
+    In such case two files could have the following names:
+    `sub-01_acq-highres_T1w.nii.gz` and `sub-01_acq-lowres_T1w.nii.gz`, however
+    the user is free to choose any other label than highres and lowres as long
+    as they are consistent across subjects and sessions.
+    In case different sequences are used to record the same modality
+    (for example, RARE and FLASH for T1w)
+    this field can also be used to make that distinction.
+    At what level of detail to make the distinction (for example,
+    just between RARE and FLASH, or between RARE, FLASH, and FLASHsubsampled)
+    remains at the discretion of the researcher.
+  format: label
+ceagent:
+  name: Contrast Enhancing Agent
+  entity: ce
+  description: |
+    The `ce-<label>` key/value can be used to distinguish
+    sequences using different contrast enhanced images.
+    The label is the name of the contrast agent.
+    The key `ContrastBolusIngredient` MAY be also be added in the JSON file,
+    with the same label.
+  format: label
+reconstruction:
+  name: Reconstruction
+  entity: rec
+  description: |
+    The `rec-<label>` key/value can be used to distinguish
+    different reconstruction algorithms (for example ones using motion
+    correction).
+  format: label
+direction:
+  name: Phase-Encoding Direction
+  entity: dir
+  description: |
+    The `dir-<label>` key/value can be set to an arbitrary alphanumeric label
+    (for example, `dir-LR` or `dir-AP`) to distinguish different phase-encoding
+    directions.
+  format: label
+run:
+  name: Run
+  entity: run
+  description: |
+    If several scans of the same modality are acquired they MUST be indexed
+    with a key-value pair: `_run-1`, `_run-2`, ..., `_run-<index>`
+    (only nonnegative integers are allowed for the `<index>`).
+    When there is only one scan of a given type the run key MAY be omitted.
+  format: index
+modality:
+  name: Corresponding Modality
+  entity: mod
+  description: |
+    The `mod-<label>` key/value pair corresponds to modality label for defacing
+    masks, for example, T1w, inplaneT1, referenced by a defacemask image.
+    For example, `sub-01_mod-T1w_defacemask.nii.gz`.
+  format: label
+echo:
+  name: Echo
+  entity: echo
+  description: |
+    If files belonging to an entity-linked file collection are acquired at different
+    echo times, the `_echo-<index>` key/value pair MUST be used to distinguish
+    individual files.
+    This entity represents the `EchoTime` metadata field. Please note that the `<index>`
+    denotes the number/index (in the form of a nonnegative integer), not the
+    `EchoTime` value which needs to be stored in the field `EchoTime` of the separate
+    JSON file.
+  format: index
+flip:
+  name: Flip Angle
+  entity: flip
+  description: |
+    If files belonging to an entity-linked file collection are acquired at different
+    flip angles, the `_flip-<index>` key/value pair MUST be used to distinguish
+    individual files.
+    This entity represents the `FlipAngle` metadata field. Please note that the `<index>`
+    denotes the number/index (in the form of a nonnegative integer), not the `FlipAngle`
+    value which needs to be stored in the field `FlipAngle` of the separate JSON file.
+  format: index
+inversion:
+  name: Inversion Time
+  entity: inv
+  description: |
+    If files belonging to an entity-linked file collection are acquired at different
+    inversion times, the `_inv-<index>` key/value pair MUST be used to distinguish
+    individual files.
+    This entity represents the `InversionTime` metadata field. Please note that the `<index>`
+    denotes the number/index (in the form of a nonnegative integer), not the `InversionTime`
+    value which needs to be stored in the field `InversionTime` of the separate JSON file.
+  format: index
+mtransfer:
+  name: Magnetization Transfer
+  entity: mt
+  description: |
+    If files belonging to an entity-linked file collection are acquired at different
+    magnetization transfer (MT) states, the `_mt-<label>` key/value pair MUST be used to
+    distinguish individual files.
+    This entity represents the `MTState` metadata field. Allowed label values for this
+    entity are `on` and `off`, for images acquired in presence and absence of an MT pulse,
+    respectively.
+  format: label
+part:
+  name: Part
+  entity: part
+  description: |
+    This entity is used to indicate which component of the complex
+    representation of the MRI signal is represented in voxel data.
+    The `part-<label>` key/value pair is associated with the DICOM tag
+    `0008,9208`.
+    Allowed label values for this entity are `phase`, `mag`, `real` and `imag`,
+    which are typically used in `part-mag`/`part-phase` or
+    `part-real`/`part-imag` pairs of files.
+
+    Phase images MAY be in radians or in arbitrary units.
+    The sidecar JSON file MUST include the units of the `phase` image.
+    The possible options are `rad` or `arbitrary`.
+
+    When there is only a magnitude image of a given type, the `part` key MAY be
+    omitted.
+  format: label
+recording:
+  name: Recording
+  entity: recording
+  description: |
+    More than one continuous recording file can be included (with different
+    sampling frequencies).
+    In such case use different labels.
+    For example: `_recording-contrast`, `_recording-saturation`.
+  format: label
+processing:
+  name: Processed (on device)
+  entity: proc
+  description: |
+    The proc label is analogous to rec for MR and denotes a variant of a file
+    that was a result of particular processing performed on the device.
+    This is useful for files produced in particular by Elekta’s MaxFilter
+    (for example, sss, tsss, trans, quat or mc),
+    which some installations impose to be run on raw data because of active
+    shielding software corrections before the MEG data can actually be
+    exploited.
+  format: label
+space:
+  name: Space
+  entity: space
+  description: |
+    The space entity can be used to indicate
+    the way in which electrode positions are interpreted
+    (for EEG/MEG/iEEG data) or
+    the spatial reference to which a file has been aligned (for MRI data).
+    The space label needs to be taken from the list in Appendix VIII.
+
+    For EEG/MEG/iEEG data, this entity can be applied to raw data, but
+    for other data types, it is restricted to derivative data.
+  format: label
+split:
+  name: Split
+  entity: split
+  description: |
+    In the case of long data recordings that exceed a file size of 2Gb, the
+    .fif files are conventionally split into multiple parts.
+    Each of these files has an internal pointer to the next file.
+    This is important when renaming these split recordings to the BIDS
+    convention.
+
+    Instead of a simple renaming, files should be read in and saved under their
+    new names with dedicated tools like [MNE-Python](https://mne.tools/),
+    which will ensure that not only the file names, but also the internal file
+    pointers will be updated.
+    It is RECOMMENDED that .fif files with multiple parts use the
+    `split-<index>` entity to indicate each part.
+  format: index
+resolution:
+  name: Resolution
+  entity: res
+  description: |
+    Resolution of regularly sampled N-dimensional data.
+    MUST have a corresponding `Resolution` metadata field to provide
+    interpretation.
+
+    This entity is only applicable to derivative data.
+  format: label
+density:
+  name: Density
+  entity: den
+  description: |
+    Density of non-parametric surfaces.
+    MUST have a corresponding `Density` metadata field to provide
+    interpretation.
+
+    This entity is only applicable to derivative data.
+  format: label
+label:
+  name: Label
+  entity: label
+  description: |
+    Tissue-type label, following a prescribed vocabulary.
+    Applies to binary masks and probabilistic/partial volume segmentations
+    that describe a single tissue type.
+
+    This entity is only applicable to derivative data.
+  format: label
+description:
+  name: Description
+  entity: desc
+  description: |
+    When necessary to distinguish two files that do not otherwise have a
+    distinguishing entity, the `_desc-<label>` keyword-value SHOULD be used.
+
+    This entity is only applicable to derivative data.
+  format: label
diff --git a/bids-validator/schemas/index.js b/bids-validator/schemas/index.js
new file mode 100644
index 000000000..ebc49685f
--- /dev/null
+++ b/bids-validator/schemas/index.js
@@ -0,0 +1,64 @@
+const yaml = require('js-yaml')
+const fs = require('fs')
+
+const datatypes = ['anat', 'beh', 'dwi', 'eeg', 'fmap', 'func', 'ieeg', 'meg']
+
+const generateRegex = (pythonRegex = false) => {
+  // Python regex needs a 'P' before matching group name
+  let P = pythonRegex ? 'P' : ''
+
+  const regex = {
+    label: '[a-zA-Z0-9]+',
+    index: '[0-9]+',
+    sub_ses_dirs:
+      '^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?',
+    type_dir: '[\\/\\\\]',
+    sub_ses_entity: '\\1(_\\2)?',
+    optional: '?',
+    required: '',
+  }
+
+  const entities = yaml.safeLoad(fs.readFileSync('./entities.yaml', 'utf8'))
+
+  let datatypes_yaml = {}
+  datatypes.map(x => {
+    datatypes_yaml[x] = yaml.safeLoad(
+      fs.readFileSync(`./datatypes/${x}.yaml`, 'utf8'),
+    )
+  })
+
+  datatypes_regex = {}
+  datatypes.map(type => {
+    datatypes_yaml[type].map(datatype_yaml => {
+      let file_regex = ''
+      file_regex = `${regex.sub_ses_dirs}${type}${regex.type_dir}${regex.sub_ses_entity}`
+      Object.keys(datatype_yaml.entities).map(entity => {
+        // sub and ses entities in file name handled by directory pattern matching groups
+        if (entity === 'sub' || entity === 'ses') {
+          return
+        }
+        console.log(type)
+        console.log(entity)
+        console.log('-----------')
+        let format = regex[entities[entity].format]
+        file_regex = file_regex.concat(
+          `(?${P}<${entity}>_${entity}-${format})${
+            regex[entities[entity].entity]
+          }`,
+        )
+      })
+      let suffix_regex = `_(?${P}<suffix>${datatype_yaml.suffixes.join('|')})`
+      let ext_regex = `(?${P}<ext>${datatype_yaml.extensions.join('|')})`
+      file_regex = file_regex.concat(`${suffix_regex}${ext_regex}$`)
+      if (!datatypes_regex[type]) {
+        datatypes_regex[type] = []
+      }
+      datatypes_regex[type].push(file_regex)
+    })
+  })
+  console.log(datatypes_regex)
+  let filename = pythonRegex ? 'python_regex.json' : 'regex.json'
+  fs.writeFileSync(`./${filename}`, JSON.stringify(datatypes_regex, null, 2))
+}
+
+generateRegex()
diff --git a/bids-validator/schemas/json/bold.json b/bids-validator/schemas/json/bold.json
new file mode 100644
index 000000000..039d56215
--- /dev/null
+++ b/bids-validator/schemas/json/bold.json
@@ -0,0 +1,42 @@
+{
+  "$schema": "http://json-schema.org/draft-06/schema#",
+  "type": "object",
+  "properties": {
+    "CogAtlasID": {
+      "type": "string"
+    },
+    "CogPOID": {
+      "type": "string"
+    },
+    "EchoTime": {
+      "type": "number",
+      "exclusiveMinimum": 0
+    },
+    "EffectiveEchoSpacing": {
+      "type": "number",
+      "exclusiveMinimum": 0
+    },
+    "PhaseEncodingDirection": {
+      "type": "string",
+      "enum": ["i", "j", "k", "i-", "j-", "k-"]
+    },
+    "RepetitionTime": {
+      "type": "number",
+      "exclusiveMinimum": 0
+    },
+    "SliceEncodingDirection": {
+      "type": "string",
+      "enum": ["i", "j", "k", "i-", "j-", "k-"]
+    },
+    "SliceTiming": {
+      "type": "array",
+      "items": {
+        "type": "number",
+        "minimum": 0
+      }
+    },
+    "TaskName": {
+      "type": "string"
+    }
+  }
+}
diff --git a/bids-validator/schemas/json/common_definitions.json b/bids-validator/schemas/json/common_definitions.json
new file mode 100644
index 000000000..7cd200eb5
--- /dev/null
+++ b/bids-validator/schemas/json/common_definitions.json
@@ -0,0 +1,62 @@
+{
+  "$id": "common_definitions.json",
+  "definitions": {
+    "CogAtlasID": { "type": "string" },
+    "CogPOID": { "type": "string" },
+    "CoordUnits": { "type": "string", "enum": ["m", "mm", "cm", "n/a"] },
+    "DeviceSerialNumber": { "type": "string" },
+    "ECGChannelCount": { "type": "integer", "minimum": 0 },
+    "EEGChannelCount": { "type": "integer", "minimum": 0 },
+    "EMGChannelCount": { "type": "integer", "minimum": 0 },
+    "EOGChannelCount": { "type": "integer", "minimum": 0 },
+    "EpochLength": { "type": "number", "minimum": 0 },
+    "HardwareFilters": {
+      "anyOf": [
+        { "type": "object", "additionalProperties": { "type": "object" } },
+        { "type": "string", "pattern": "^n/a$" }
+      ]
+    },
+    "InstitutionAddress": { "type": "string" },
+    "InstitutionName": { "type": "string" },
+    "Instructions": { "type": "string" },
+    "LandmarkCoordinates": {
+      "type": "object",
+      "additionalProperties": {
+        "type": "array", 
+        "items": {
+          "type": "number"
+        },
+        "minItems": 3,
+        "maxItems": 3
+      }
+    },
+    "Manufacturer": { "type": "string", "minLength": 1 },
+    "MiscChannelCount": { "type": "integer", "minimum": 0 },
+    "PowerLineFrequency": {
+      "anyOf": [
+        { "type": "number", "exclusiveMinimum": 0 },
+        { "type": "string", "pattern": "^n/a$" }
+      ]
+    },
+    "RecordingDuration": { "type": "number" },
+    "RecordingType": {
+      "type": "string",
+      "enum": [
+        "continuous",
+        "epoched",
+        "discontinuous" 
+      ]
+    },
+    "SamplingFrequency": { "type": "number" },
+    "SoftwareFilters": {
+      "anyOf": [
+        { "type": "object", "additionalProperties": { "type": "object" } },
+        { "type": "string", "pattern": "^n/a$" }
+      ]
+    },
+    "SoftwareVersions": { "type": "string" },
+    "TaskDescription": { "type": "string" },
+    "TaskName": { "type": "string", "minLength": 1 },
+    "TriggerChannelCount": { "type": "integer", "minimum": 0 }
+  }
+}
diff --git a/bids-validator/schemas/json/coordsystem_eeg.json b/bids-validator/schemas/json/coordsystem_eeg.json
new file mode 100644
index 000000000..fe7ede356
--- /dev/null
+++ b/bids-validator/schemas/json/coordsystem_eeg.json
@@ -0,0 +1,20 @@
+{
+  "type": "object",
+  "properties": {
+    "IntendedFor": { "type": "string", "minLength": 1 },
+    "FiducialsDescription": { "type": "string", "minLength": 1 },
+    "FiducialsCoordinates": { "$ref": "common_definitions.json#/definitions/LandmarkCoordinates" },
+    "FiducialsCoordinateSystem": { "type": "string", "minLength": 1 },
+    "FiducialsCoordinateSystemDescription": { "type": "string" },
+    "FiducialsCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "EEGCoordinateSystem": { "type": "string", "minLength": 1 },
+    "EEGCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "EEGCoordinateSystemDescription": { "type": "string" },
+    "AnatomicalLandmarkCoordinates": { "$ref": "common_definitions.json#/definitions/LandmarkCoordinates" },
+    "AnatomicalLandmarkCoordinateSystem": { "type": "string", "minLength": 1 },
+    "AnatomicalLandmarkCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "AnatomicalLandmarkCoordinateSystemDescription": { "type": "string" }
+  },
+  "required": ["EEGCoordinateSystem", "EEGCoordinateUnits"],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/coordsystem_ieeg.json b/bids-validator/schemas/json/coordsystem_ieeg.json
new file mode 100644
index 000000000..6a1581bdd
--- /dev/null
+++ b/bids-validator/schemas/json/coordsystem_ieeg.json
@@ -0,0 +1,13 @@
+{
+  "type": "object",
+  "properties": {
+    "iEEGCoordinateSystem": { "type": "string", "minLength": 1 },
+    "iEEGCoordinateUnits":  { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "iEEGCoordinateSystemDescription": { "type": "string", "minLength": 1 },
+    "iEEGCoordinateProcessingDescription": { "type": "string", "minLength": 1 },
+    "iEEGCoordinateProcessingReference": { "type": "string", "minLength": 1 },
+    "IntendedFor": { "type": "string", "minLength": 1 }
+  },
+  "required": ["iEEGCoordinateSystem", "iEEGCoordinateUnits"],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/coordsystem_meg.json b/bids-validator/schemas/json/coordsystem_meg.json
new file mode 100644
index 000000000..9d71437be
--- /dev/null
+++ b/bids-validator/schemas/json/coordsystem_meg.json
@@ -0,0 +1,38 @@
+{
+  "type": "object",
+  "properties": {
+    "MEGCoordinateSystem": { "type": "string", "minLength": 1 },
+    "MEGCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "MEGCoordinateSystemDescription": { "type": "string" },
+    "EEGCoordinateSystem": { "type": "string", "minLength": 1 },
+    "EEGCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "EEGCoordinateSystemDescription": { "type": "string" },
+    "IntendedFor": {
+      "anyOf": [
+        {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "minLength": 1
+          }
+        },
+        { "type": "string", "minLength": 1 }
+      ]
+    },
+    "FiducialsDescription": { "type": "string", "minLength": 1 },
+    "HeadCoilCoordinates": { "$ref": "common_definitions.json#/definitions/LandmarkCoordinates" },
+    "HeadCoilCoordinateSystem": { "type": "string", "minLength": 1 },
+    "HeadCoilCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "HeadCoilCoordinateSystemDescription": { "type": "string" },
+    "AnatomicalLandmarkCoordinates": { "$ref": "common_definitions.json#/definitions/LandmarkCoordinates" },
+    "AnatomicalLandmarkCoordinateSystem": { "type": "string", "minLength": 1 },
+    "AnatomicalLandmarkCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "AnatomicalLandmarkCoordinateSystemDescription": { "type": "string" },
+    "DigitizedHeadPoints": { "type": "string" },
+    "DigitizedHeadPointsCoordinateSystem": { "type": "string" },
+    "DigitizedHeadPointsCoordinateUnits": { "$ref": "common_definitions.json#/definitions/CoordUnits" },
+    "DigitizedHeadPointsCoordinateSystemDescription": { "type": "string" }
+  },
+  "required": ["MEGCoordinateSystem", "MEGCoordinateUnits"],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/data_dictionary.json b/bids-validator/schemas/json/data_dictionary.json
new file mode 100644
index 000000000..0712d03a9
--- /dev/null
+++ b/bids-validator/schemas/json/data_dictionary.json
@@ -0,0 +1,42 @@
+{
+  "type": "object",
+  "patternProperties": {
+    "^.+$": {
+      "type": "object",
+      "title": "Column",
+      "description": "Column of a corresponding tabular file.",
+      "properties": {
+        "LongName": {
+          "title": "LongName",
+          "description": " Long (unabbreviated) name of column.",
+          "type": "string"
+        },
+        "Description": {
+          "title": "Description",
+          "description": "Description of the column.",
+          "type": "string"
+        },
+        "Units": {
+          "title": "Units",
+          "description": "Measurement units.",
+          "type": "string"
+        },
+        "Levels": {
+          "type": "object",
+          "title": "Levels",
+          "description": "For  categorical variables: a dictionary of possible values (keys) and their descriptions (values).",
+          "patternProperties": {
+            "^.+$": {
+              "type": "string"
+            }
+          }
+        },
+        "TermURL": {
+          "title": "TermURL",
+          "description": "URL pointing to a formal definition in an ontology available on the web.",
+          "type": "string"
+        }
+      }
+    }
+  }
+}
diff --git a/bids-validator/schemas/json/dataset_description.json b/bids-validator/schemas/json/dataset_description.json
new file mode 100644
index 000000000..c6b9b163d
--- /dev/null
+++ b/bids-validator/schemas/json/dataset_description.json
@@ -0,0 +1,74 @@
+{
+  "$schema": "http://json-schema.org/draft-06/schema#",
+  "$id": "http://example.com/example.json",
+  "properties": {
+    "Name": {
+      "type": "string"
+    },
+    "BIDSVersion": {
+      "type": "string"
+    },
+    "HEDVersion": {
+      "type": "string"
+    },
+    "DatasetType": {
+      "type": "string",
+      "enum": ["raw", "derivative"]
+    },
+    "License": {
+      "type": "string"
+    },
+    "Authors": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "Acknowledgements": {
+      "type": "string"
+    },
+    "HowToAcknowledge": {
+      "type": "string"
+    },
+    "Funding": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "EthicsApprovals": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "ReferencesAndLinks": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "DatasetDOI": {
+      "type": "string"
+    },
+    "Genetics": {
+      "type": "object",
+      "properties": {
+        "Database": {
+          "type": "string"
+        },
+        "Dataset": {
+          "type": "string"
+        },
+        "Descriptors": {
+          "items": {
+            "type": "string"
+          },
+          "type": ["array", "string"]
+        }
+      }
+    }
+  },
+  "required": ["Name", "BIDSVersion"],
+  "type": "object"
+}
diff --git a/bids-validator/schemas/json/eeg.json b/bids-validator/schemas/json/eeg.json
new file mode 100644
index 000000000..261bb62d7
--- /dev/null
+++ b/bids-validator/schemas/json/eeg.json
@@ -0,0 +1,45 @@
+{
+  "type": "object",
+  "properties": {
+    "TaskName": { "$ref": "common_definitions.json#/definitions/TaskName" },
+    "TaskDescription": { "$ref": "common_definitions.json#/definitions/TaskDescription" },
+    "Instructions": { "$ref": "common_definitions.json#/definitions/Instructions" },
+    "CogAtlasID": { "$ref": "common_definitions.json#/definitions/CogAtlasID" },
+    "CogPOID": { "$ref": "common_definitions.json#/definitions/CogPOID" },
+    "InstitutionName": { "$ref": "common_definitions.json#/definitions/InstitutionName" },
+    "InstitutionalDepartmentName": { "type": "string" },
+    "InstitutionAddress": { "$ref": "common_definitions.json#/definitions/InstitutionAddress" },
+    "Manufacturer": { "$ref": "common_definitions.json#/definitions/Manufacturer" },
+    "ManufacturersModelName": { "type": "string", "minLength": 1 },
+    "DeviceSerialNumber": { "$ref": "common_definitions.json#/definitions/DeviceSerialNumber" },
+    "SoftwareVersions": { "$ref": "common_definitions.json#/definitions/SoftwareVersions" },
+    "PowerLineFrequency": { "$ref": "common_definitions.json#/definitions/PowerLineFrequency" },
+    "SamplingFrequency": { "$ref": "common_definitions.json#/definitions/SamplingFrequency" },
+    "EEGChannelCount": { "$ref": "common_definitions.json#/definitions/EEGChannelCount" },
+    "EOGChannelCount": { "$ref": "common_definitions.json#/definitions/EOGChannelCount" },
+    "ECGChannelCount": { "$ref": "common_definitions.json#/definitions/ECGChannelCount" },
+    "EMGChannelCount": { "$ref": "common_definitions.json#/definitions/EMGChannelCount" },
+    "MiscChannelCount": { "$ref": "common_definitions.json#/definitions/MiscChannelCount" },
+    "TriggerChannelCount": { "$ref": "common_definitions.json#/definitions/TriggerChannelCount" },
+    "EEGPlacementScheme": { "type": "string" },
+    "EEGReference": { "type": "string" },
+    "EEGGround": { "type": "string" },
+    "CapManufacturer": { "type": "string" },
+    "CapManufacturersModelName": { "type": "string" },
+    "HeadCircumference": { "type": "number", "exclusiveMinimum": 0 },
+    "HardwareFilters": { "$ref": "common_definitions.json#/definitions/HardwareFilters" },
+    "SoftwareFilters": { "$ref": "common_definitions.json#/definitions/SoftwareFilters" },
+    "RecordingDuration": { "$ref": "common_definitions.json#/definitions/RecordingDuration" },
+    "RecordingType": { "$ref": "common_definitions.json#/definitions/RecordingType" },
+    "EpochLength": { "$ref": "common_definitions.json#/definitions/EpochLength" },
+    "SubjectArtefactDescription": { "type": "string" }
+  },
+  "required": [
+    "TaskName",
+    "SamplingFrequency",
+    "SoftwareFilters",
+    "EEGReference",
+    "PowerLineFrequency"
+  ],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/genetic_info.json b/bids-validator/schemas/json/genetic_info.json
new file mode 100644
index 000000000..2e59d454a
--- /dev/null
+++ b/bids-validator/schemas/json/genetic_info.json
@@ -0,0 +1,61 @@
+{
+  "type": "object",
+  "definitions": {
+    "GeneticLevelEnum": {
+      "type": "string",
+      "enum": [
+        "Genetic",
+        "Genomic",
+        "Epigenomic",
+        "Transcriptomic",
+        "Metabolomic",
+        "Proteomic"
+      ]
+    }
+  },
+  "properties": {
+    "GeneticLevel": {
+      "anyof": [
+        {
+          "type": "array",
+          "items": {"$ref": "#/definitions/GeneticLevelEnum"}
+        },
+        { "$ref": "#/definitions/GeneticLevelEnum" }
+      ]
+    },
+    "AnalyticalApproach": {
+      "items": {
+        "type": "string"
+      },
+      "type": ["array", "string"]
+    },
+    "SampleOrigin": {
+      "type": "string",
+      "enum": [
+        "blood",
+        "saliva",
+        "brain",
+        "csf",
+        "breast milk",
+        "bile",
+        "amniotic fluid",
+        "other biospecimen"
+      ]
+    },
+    "TissueOrigin": {
+      "type": "string",
+      "enum": [
+        "gray matter",
+        "white matter",
+        "csf",
+        "meninges",
+        "macrovascular",
+        "microvascular"
+      ]
+    },
+    "BrainLocation": { "type": "string" },
+    "CellType": { "type": "string" }
+  },
+  "required": ["GeneticLevel", "SampleOrigin"],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/ieeg.json b/bids-validator/schemas/json/ieeg.json
new file mode 100644
index 000000000..d2081b4bb
--- /dev/null
+++ b/bids-validator/schemas/json/ieeg.json
@@ -0,0 +1,49 @@
+{
+  "type": "object",
+  "properties": {
+    "TaskName": { "$ref": "common_definitions.json#/definitions/TaskName" },
+    "SamplingFrequency": { "$ref": "common_definitions.json#/definitions/SamplingFrequency" },
+    "PowerLineFrequency": { "$ref": "common_definitions.json#/definitions/PowerLineFrequency" },
+    "DCOffsetCorrection": { "type": "string", "minLength": 1 },
+    "SoftwareFilters": { "$ref": "common_definitions.json#/definitions/SoftwareFilters" },
+    "HardwareFilters": { "$ref": "common_definitions.json#/definitions/HardwareFilters" },
+    "Manufacturer": { "$ref": "common_definitions.json#/definitions/Manufacturer" },
+    "ManufacturersModelName": { "type": "string" },
+    "TaskDescription": { "$ref": "common_definitions.json#/definitions/TaskDescription" },
+    "Instructions": { "$ref": "common_definitions.json#/definitions/Instructions" },
+    "CogAtlasID": { "$ref": "common_definitions.json#/definitions/CogAtlasID" },
+    "CogPOID": { "$ref": "common_definitions.json#/definitions/CogPOID" },
+    "InstitutionName": { "$ref": "common_definitions.json#/definitions/InstitutionName" },
+    "InstitutionAddress": { "$ref": "common_definitions.json#/definitions/InstitutionAddress" },
+    "DeviceSerialNumber": { "$ref": "common_definitions.json#/definitions/DeviceSerialNumber" },
+    "ECOGChannelCount": { "type": "integer", "minimum": 0 },
+    "SEEGChannelCount": { "type": "integer", "minimum": 0 },
+    "EEGChannelCount": { "$ref": "common_definitions.json#/definitions/EEGChannelCount" },
+    "EOGChannelCount": { "$ref": "common_definitions.json#/definitions/EOGChannelCount" },
+    "ECGChannelCount": { "$ref": "common_definitions.json#/definitions/ECGChannelCount" },
+    "EMGChannelCount": { "$ref": "common_definitions.json#/definitions/EMGChannelCount" },
+    "MiscChannelCount": { "$ref": "common_definitions.json#/definitions/MiscChannelCount" },
+    "TriggerChannelCount": { "$ref": "common_definitions.json#/definitions/TriggerChannelCount" },
+    "RecordingDuration": { "$ref": "common_definitions.json#/definitions/RecordingDuration" },
+    "RecordingType": { "$ref": "common_definitions.json#/definitions/RecordingType" },
+    "EpochLength": { "$ref": "common_definitions.json#/definitions/EpochLength" },
+    "SubjectArtefactDescription": { "type": "string" },
+    "SoftwareVersions": { "$ref": "common_definitions.json#/definitions/SoftwareVersions" },
+    "iEEGReference": { "type": "string" },
+    "ElectrodeManufacturer": { "type": "string" },
+    "ElectrodeManufacturersModelName": { "type": "string" },
+    "iEEGGround": { "type": "string" },
+    "iEEGPlacementScheme": { "type": "string" },
+    "iEEGElectrodeGroups": { "type": "string" },
+    "ElectricalStimulation": { "type": "boolean" },
+    "ElectricalStimulationParameters": { "type": "string" }
+  },
+  "required": [
+    "TaskName",
+    "SamplingFrequency",
+    "PowerLineFrequency",
+    "SoftwareFilters",
+    "iEEGReference"
+  ],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/meg.json b/bids-validator/schemas/json/meg.json
new file mode 100644
index 000000000..6297fe985
--- /dev/null
+++ b/bids-validator/schemas/json/meg.json
@@ -0,0 +1,75 @@
+{
+  "type": "object",
+  "properties": {
+    "TaskName": { "$ref": "common_definitions.json#/definitions/TaskName" },
+    "TaskDescription": { "$ref": "common_definitions.json#/definitions/TaskDescription" },
+    "Instructions": { "$ref": "common_definitions.json#/definitions/Instructions" },
+    "CogAtlasID": { "$ref": "common_definitions.json#/definitions/CogAtlasID" },
+    "CogPOID": { "$ref": "common_definitions.json#/definitions/CogPOID" },
+    "InstitutionName": { "$ref": "common_definitions.json#/definitions/InstitutionName" },
+    "InstitutionalDepartmentName": { "type": "string" },
+    "InstitutionAddress": { "$ref": "common_definitions.json#/definitions/InstitutionAddress" },
+    "Manufacturer": { "$ref": "common_definitions.json#/definitions/Manufacturer" },
+    "ManufacturersModelName": { "type": "string", "minLength": 1 },
+    "DeviceSerialNumber": { "$ref": "common_definitions.json#/definitions/DeviceSerialNumber" },
+    "SoftwareVersions": { "$ref": "common_definitions.json#/definitions/SoftwareVersions" },
+    "PowerLineFrequency": { "$ref": "common_definitions.json#/definitions/PowerLineFrequency" },
+    "SamplingFrequency": { "$ref": "common_definitions.json#/definitions/SamplingFrequency" },
+    "MEGChannelCount": { "type": "integer", "minimum": 0 },
+    "MEGREFChannelCount": { "type": "integer", "minimum": 0 },
+    "EEGChannelCount": { "$ref": "common_definitions.json#/definitions/EEGChannelCount" },
+    "ECOGChannelCount": { "type": "integer", "minimum": 0 },
+    "SEEGChannelCount": { "type": "integer", "minimum": 0 },
+    "EOGChannelCount": { "$ref": "common_definitions.json#/definitions/EOGChannelCount" },
+    "ECGChannelCount": { "$ref": "common_definitions.json#/definitions/ECGChannelCount" },
+    "EMGChannelCount": { "$ref": "common_definitions.json#/definitions/EMGChannelCount" },
+    "MiscChannelCount": { "$ref": "common_definitions.json#/definitions/MiscChannelCount" },
+    "TriggerChannelCount": { "$ref": "common_definitions.json#/definitions/TriggerChannelCount" },
+    "EEGPlacementScheme": { "type": "string" },
+    "EEGReference": { "type": "string" },
+    "CapManufacturer": { "type": "string" },
+    "CapManufacturersModelName": { "type": "string" },
+    "DewarPosition": { "type": "string" },
+    "HardwareFilters": { "$ref": "common_definitions.json#/definitions/HardwareFilters" },
+    "SoftwareFilters": { "$ref": "common_definitions.json#/definitions/SoftwareFilters" },
+    "RecordingDuration": { "$ref": "common_definitions.json#/definitions/RecordingDuration" },
+    "RecordingType": { "$ref": "common_definitions.json#/definitions/RecordingType" },
+    "EpochLength": { "$ref": "common_definitions.json#/definitions/EpochLength" },
+    "ContinuousHeadLocalization": { "type": "boolean" },
+    "HeadCoilFrequency": {
+      "anyOf": [
+        { "type": "number" },
+        {
+          "type": "array",
+          "items": { "type": "number" }
+        }
+      ]
+    },
+    "AssociatedEmptyRoom": {
+      "anyOf": [
+        {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "minLength": 1
+          }
+        },
+        { "type": "string", "minLength": 1 }
+      ]
+    },
+    "MaxMovement": { "type": "number" },
+    "SubjectArtefactDescription": { "type": "string" },
+    "DigitizedLandmarks": { "type": "boolean" },
+    "DigitizedHeadPoints": { "type": "boolean" }
+  },
+  "required": [
+    "TaskName",
+    "SamplingFrequency",
+    "PowerLineFrequency",
+    "DewarPosition",
+    "SoftwareFilters",
+    "DigitizedLandmarks",
+    "DigitizedHeadPoints"
+  ],
+  "additionalProperties": false
+}
diff --git a/bids-validator/schemas/json/physio.json b/bids-validator/schemas/json/physio.json
new file mode 100644
index 000000000..a7f2db37b
--- /dev/null
+++ b/bids-validator/schemas/json/physio.json
@@ -0,0 +1,20 @@
+{
+  "type": "object",
+  "properties": {
+    "SamplingFrequency": { "type": "number", "exclusiveMinimum": 0 },
+    "StartTime": { "type": "number" },
+    "Columns": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "minLength": 1
+      }
+    }
+  },
+  "required": [
+    "SamplingFrequency",
+    "StartTime",
+    "Columns"
+  ]
+}
+
diff --git a/bids-validator/schemas/modalities.yaml b/bids-validator/schemas/modalities.yaml
new file mode 100644
index 000000000..59fc9f092
--- /dev/null
+++ b/bids-validator/schemas/modalities.yaml
@@ -0,0 +1,25 @@
+---
+mri:
+  name: Magnetic Resonance Imaging
+  datatypes:
+    - anat
+    - dwi
+    - fmap
+    - func
+    - perf
+eeg:
+  name: Electroencephalography
+  datatypes:
+    - eeg
+ieeg:
+  name: Intracranial Electroencephalography
+  datatypes:
+    - ieeg
+meg:
+  name: Magnetoencephalography
+  datatypes:
+    - meg
+beh:
+  name: Behavioral experiments
+  datatypes:
+    - beh
diff --git a/bids-validator/schemas/python_regex.json b/bids-validator/schemas/python_regex.json
new file mode 100644
index 000000000..120ad3c16
--- /dev/null
+++ b/bids-validator/schemas/python_regex.json
@@ -0,0 +1,35 @@
+{
+  "anat": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?P<run>_run-[0-9]+)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<ce>_ce-[a-zA-Z0-9]+)?(?P<rec>_rec-[a-zA-Z0-9]+)?(?P<part>_part-[a-zA-Z0-9]+)?_(?P<suffix>T1w|T2w|T1rho|T1map|T2map|T2star|FLAIR|FLASH|PD|PDmap|PDT2|inplaneT1|inplaneT2|angio)(?P<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?P<run>_run-[0-9]+)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<ce>_ce-[a-zA-Z0-9]+)?(?P<rec>_rec-[a-zA-Z0-9]+)?(?P<mod>_mod-[a-zA-Z0-9]+)?_(?P<suffix>defacemask)(?P<ext>.nii.gz|.nii|.json)$"
+  ],
+  "beh": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?beh[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<recording>_recording-[a-zA-Z0-9]+)?_(?P<suffix>stim|physio)(?P<ext>.tsv.gz|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?beh[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?_(?P<suffix>events|beh)(?P<ext>.tsv|.json)$"
+  ],
+  "dwi": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?dwi[\\/\\\\]\\1(_\\2)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<dir>_dir-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<part>_part-[a-zA-Z0-9]+)?_(?P<suffix>dwi)(?P<ext>.nii.gz|.nii|.json|.bvec|.bval)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?dwi[\\/\\\\]\\1(_\\2)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<dir>_dir-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<part>_part-[a-zA-Z0-9]+)?_(?P<suffix>sbref)(?P<ext>.nii.gz|.nii|.json)$"
+  ],
+  "eeg": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?_(?P<suffix>eeg)(?P<ext>.json|.edf|.vhdr|.vmrk|.eeg|.set|.fdt|.bdf)$"
+  ],
+  "fmap": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?fmap[\\/\\\\]\\1(_\\2)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?_(?P<suffix>phasediff|phase1|phase2|magnitude1|magnitude2|magnitude|fieldmap)(?P<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?fmap[\\/\\\\]\\1(_\\2)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<ce>_ce-[a-zA-Z0-9]+)?(?P<dir>_dir-[a-zA-Z0-9]+)(?P<run>_run-[0-9]+)?_(?P<suffix>epi)(?P<ext>.nii.gz|.nii|.json)$"
+  ],
+  "func": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<ce>_ce-[a-zA-Z0-9]+)?(?P<rec>_rec-[a-zA-Z0-9]+)?(?P<dir>_dir-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<echo>_echo-[0-9]+)?(?P<part>_part-[a-zA-Z0-9]+)?_(?P<suffix>bold|cbv|sbref)(?P<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<ce>_ce-[a-zA-Z0-9]+)?(?P<rec>_rec-[a-zA-Z0-9]+)?(?P<dir>_dir-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<echo>_echo-[0-9]+)?_(?P<suffix>phase)(?P<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<ce>_ce-[a-zA-Z0-9]+)?(?P<rec>_rec-[a-zA-Z0-9]+)?(?P<dir>_dir-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<echo>_echo-[0-9]+)?_(?P<suffix>events)(?P<ext>.tsv|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<rec>_rec-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<recording>_recording-[a-zA-Z0-9]+)?_(?P<suffix>physio|stim)(?P<ext>.tsv.gz|.json)$"
+  ],
+  "ieeg": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?_(?P<suffix>ieeg)(?P<ext>.mefd/|.json|.edf|.vhdr|.eeg|.vmrk|.set|.fdt|.nwb)$"
+  ],
+  "meg": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<run>_run-[0-9]+)?(?P<proc>_proc-[a-zA-Z0-9]+)?(?P<split>_split-[0-9]+)?_(?P<suffix>meg)(?P<ext>/|.ds/|.json|.fif|.sqd|.con|.raw|.ave|.mrk|.kdf|.mhd)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<space>_space-[a-zA-Z0-9]+)?_(?P<suffix>headshape)(?P<ext>.pos|.txt)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?P<task>_task-[a-zA-Z0-9]+)?(?P<acq>_acq-[a-zA-Z0-9]+)?(?P<space>_space-[a-zA-Z0-9]+)?_(?P<suffix>markers)(?P<ext>.json)$"
+  ]
+}
\ No newline at end of file
diff --git a/bids-validator/schemas/regex.json b/bids-validator/schemas/regex.json
new file mode 100644
index 000000000..22a5aeae5
--- /dev/null
+++ b/bids-validator/schemas/regex.json
@@ -0,0 +1,58 @@
+{
+  "anat": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>T1w|T2w|PDw|T2starw|FLAIR|inplaneT1|inplaneT2|PDT2|angio)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined_(?<suffix>T1map|T2map|T2starmap|R1map|R2map|R2starmap|PDmap|MTRmap|MTsat|UNIT1|T1rho|MWFmap|MTVmap|PDT2map|Chimap|TB1map|RB1map|S0map|M0map)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<modality>_modality-[a-zA-Z0-9]+)undefined_(?<suffix>defacemask)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<echo>_echo-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>MESE|MEGRE)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<flip>_flip-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>VFA)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<inversion>_inversion-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>IRT1)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<echo>_echo-[0-9]+)undefined(?<flip>_flip-[0-9]+)undefined(?<inversion>_inversion-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>MP2RAGE)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<echo>_echo-[0-9]+)undefined(?<flip>_flip-[0-9]+)undefined(?<mtransfer>_mtransfer-[a-zA-Z0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>MPM|MTS)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?anat[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<mtransfer>_mtransfer-[a-zA-Z0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>MTR)(?<ext>.nii.gz|.nii|.json)$"
+  ],
+  "beh": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?beh[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<recording>_recording-[a-zA-Z0-9]+)undefined_(?<suffix>stim|physio)(?<ext>.tsv.gz|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?beh[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>events|beh)(?<ext>.tsv|.json)$"
+  ],
+  "dwi": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?dwi[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<direction>_direction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>dwi)(?<ext>.nii.gz|.nii|.json|.bvec|.bval)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?dwi[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<direction>_direction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>sbref)(?<ext>.nii.gz|.nii|.json)$"
+  ],
+  "eeg": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>eeg)(?<ext>.json|.edf|.vhdr|.vmrk|.eeg|.set|.fdt|.bdf)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>channels)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>coordsystem)(?<ext>.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<space>_space-[a-zA-Z0-9]+)undefined_(?<suffix>electrodes)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>events)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?eeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>photo)(?<ext>.jpg)$"
+  ],
+  "fmap": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?fmap[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>phasediff|phase1|phase2|magnitude1|magnitude2|magnitude|fieldmap)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?fmap[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<direction>_direction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>epi|m0scan)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?fmap[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<flip>_flip-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>TB1DAM)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?fmap[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<echo>_echo-[0-9]+)undefined(?<flip>_flip-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>TB1EPI)(?<ext>.nii.gz|.nii|.json)$"
+  ],
+  "func": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<direction>_direction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<echo>_echo-[0-9]+)undefined(?<part>_part-[a-zA-Z0-9]+)undefined_(?<suffix>bold|cbv|sbref)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<direction>_direction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<echo>_echo-[0-9]+)undefined_(?<suffix>phase)(?<ext>.nii.gz|.nii|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<ceagent>_ceagent-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<direction>_direction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<echo>_echo-[0-9]+)undefined_(?<suffix>events)(?<ext>.tsv|.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?func[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<reconstruction>_reconstruction-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<recording>_recording-[a-zA-Z0-9]+)undefined_(?<suffix>physio|stim)(?<ext>.tsv.gz|.json)$"
+  ],
+  "ieeg": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>ieeg)(?<ext>.mefd/|.json|.edf|.vhdr|.eeg|.vmrk|.set|.fdt|.nwb)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>channels)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<space>_space-[a-zA-Z0-9]+)undefined_(?<suffix>coordsystem)(?<ext>.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<space>_space-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>electrodes)(?<ext>.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>events)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?ieeg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>photo)(?<ext>.jpg)$"
+  ],
+  "meg": [
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<processing>_processing-[a-zA-Z0-9]+)undefined(?<split>_split-[0-9]+)undefined_(?<suffix>meg)(?<ext>/|.ds/|.json|.fif|.sqd|.con|.raw|.ave|.mrk|.kdf|.mhd)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>headshape)(?<ext>*)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<space>_space-[a-zA-Z0-9]+)undefined_(?<suffix>markers)(?<ext>.sqd|.mrk)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>coordsystem)(?<ext>.json)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined(?<processing>_processing-[a-zA-Z0-9]+)undefined_(?<suffix>channels)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<task>_task-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined(?<run>_run-[0-9]+)undefined_(?<suffix>events)(?<ext>.json|.tsv)$",
+    "^[\\/\\\\](sub-[a-zA-Z0-9]+)[\\/\\\\](?:(ses-[a-zA-Z0-9]+)[\\/\\\\])?meg[\\/\\\\]\\1(_\\2)?(?<subject>_subject-[a-zA-Z0-9]+)undefined(?<session>_session-[a-zA-Z0-9]+)undefined(?<acquisition>_acquisition-[a-zA-Z0-9]+)undefined_(?<suffix>photo)(?<ext>.jpg)$"
+  ]
+}
\ No newline at end of file
diff --git a/bids-validator/schemas/top_level_files.yaml b/bids-validator/schemas/top_level_files.yaml
new file mode 100644
index 000000000..42b402a76
--- /dev/null
+++ b/bids-validator/schemas/top_level_files.yaml
@@ -0,0 +1,26 @@
+---
+README:
+  required: true
+  extensions:
+    - None
+CHANGES:
+  required: true
+  extensions:
+    - None
+LICENSE:
+  required: false
+  extensions:
+    - None
+dataset_description:
+  required: true
+  extensions:
+    - .json
+genetic_info:
+  required: false
+  extensions:
+    - .json
+participants:
+  required: false
+  extensions:
+    - .tsv
+    - .json
diff --git a/bids-validator/utils/schemaTypes.js b/bids-validator/utils/schemaTypes.js
new file mode 100644
index 000000000..50bf0d84a
--- /dev/null
+++ b/bids-validator/utils/schemaTypes.js
@@ -0,0 +1,15 @@
+import * as schemaRegex from '../schemas/regex.json'
+
+let regexStrs = schemaRegex.default
+console.log()
+const regexes = Object.values(regexStrs)
+  .flat()
+  .map(regexStr => {
+    return new RegExp(regexStr)
+  })
+
+export const _isBids = path => {
+  return regexes.some(regex => {
+    return !!regex.exec(path)
+  })
+}
diff --git a/bids-validator/utils/type.js b/bids-validator/utils/type.js
index c246fa6b9..a840b121b 100644
--- a/bids-validator/utils/type.js
+++ b/bids-validator/utils/type.js
@@ -6,6 +6,8 @@
  * BIDS specification requirements.
  */
 
+import { _isBids } from './schemaTypes'
+
 /**
  * Import RegExps from bids-validator-common
  */
@@ -65,11 +67,15 @@ export default {
    * bids spec.
    */
   isBIDS: function(path) {
+    // _isBids(path)
     return (
       this.file.isTopLevel(path) ||
       this.file.isStimuliData(path) ||
       this.file.isSessionLevel(path) ||
       this.file.isSubjectLevel(path) ||
+      this.file.isPhenotypic(path) ||
+      _isBids(path)
+      /*
       this.file.isAnat(path) ||
       this.file.isDWI(path) ||
       this.file.isFunc(path) ||
@@ -78,7 +84,7 @@ export default {
       this.file.isEEG(path) ||
       this.file.isBehavioral(path) ||
       this.file.isFieldMap(path) ||
-      this.file.isPhenotypic(path)
+      */
     )
   },