diff --git a/Cargo.lock b/Cargo.lock
index e6285fbb408..ee5ad6a78b3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -516,7 +516,7 @@ dependencies = [
  "rand 0.7.3",
  "serde",
  "serde_derive",
- "serde_hex",
+ "serde_utils",
  "tree_hash",
  "zeroize",
 ]
@@ -569,6 +569,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "buf_redux"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b953a6887648bb07a535631f2bc00fbdb2a2216f135552cb3f534ed136b9c07f"
+dependencies = [
+ "memchr",
+ "safemem",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.4.0"
@@ -740,6 +750,7 @@ dependencies = [
  "eth2_ssz",
  "futures 0.3.5",
  "genesis",
+ "http_api",
  "lazy_static",
  "lighthouse_metrics",
  "network",
@@ -1420,6 +1431,17 @@ dependencies = [
  "web3",
 ]
 
+[[package]]
+name = "eth2"
+version = "0.1.0"
+dependencies = [
+ "hex 0.4.2",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "types",
+]
+
 [[package]]
 name = "eth2_config"
 version = "0.2.0"
@@ -1558,7 +1580,7 @@ dependencies = [
  "eth2_ssz",
  "serde",
  "serde_derive",
- "serde_hex",
+ "serde_utils",
  "tree_hash",
  "tree_hash_derive",
  "typenum",
@@ -2125,6 +2147,31 @@ dependencies = [
  "tokio 0.2.22",
 ]
 
+[[package]]
+name = "headers"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed18eb2459bf1a09ad2d6b1547840c3e5e62882fa09b9a6a20b1de8e3228848f"
+dependencies = [
+ "base64 0.12.3",
+ "bitflags 1.2.1",
+ "bytes 0.5.6",
+ "headers-core",
+ "http 0.2.1",
+ "mime 0.3.16",
+ "sha-1 0.8.2",
+ "time 0.1.44",
+]
+
+[[package]]
+name = "headers-core"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7f66481bfee273957b1f20485a4ff3362987f85b2c236580d81b4eb7a326429"
+dependencies = [
+ "http 0.2.1",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.1"
@@ -2246,6 +2293,34 @@ dependencies = [
  "http 0.2.1",
 ]
 
+[[package]]
+name = "http_api"
+version = "0.1.0"
+dependencies = [
+ "beacon_chain",
+ "environment",
+ "eth2",
+ "eth2_libp2p",
+ "hex 0.4.2",
+ "network",
+ "parking_lot 0.11.0",
+ "serde",
+ "slog",
+ "store",
+ "tokio 0.2.22",
+ "types",
+ "warp",
+]
+
+[[package]]
+name = "http_api_common"
+version = "0.1.0"
+dependencies = [
+ "hex 0.4.2",
+ "serde",
+ "types",
+]
+
 [[package]]
 name = "httparse"
 version = "1.3.4"
@@ -2419,6 +2494,15 @@ dependencies = [
  "hashbrown 0.8.2",
 ]
 
+[[package]]
+name = "input_buffer"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19a8a95243d5a0398cae618ec29477c6e3cb631152be5c19481f80bc71559754"
+dependencies = [
+ "bytes 0.5.6",
+]
+
 [[package]]
 name = "instant"
 version = "0.1.6"
@@ -3220,6 +3304,24 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1255076139a83bb467426e7f8d0134968a8118844faa755985e077cf31850333"
 
+[[package]]
+name = "multipart"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8209c33c951f07387a8497841122fc6f712165e3f9bda3e6be4645b58188f676"
+dependencies = [
+ "buf_redux",
+ "httparse",
+ "log 0.4.11",
+ "mime 0.3.16",
+ "mime_guess",
+ "quick-error 1.2.3",
+ "rand 0.6.5",
+ "safemem",
+ "tempfile",
+ "twoway",
+]
+
 [[package]]
 name = "multistream-select"
 version = "0.8.2"
@@ -4058,6 +4160,25 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "rand"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
+dependencies = [
+ "autocfg 0.1.7",
+ "libc",
+ "rand_chacha 0.1.1",
+ "rand_core 0.4.2",
+ "rand_hc 0.1.0",
+ "rand_isaac",
+ "rand_jitter",
+ "rand_os",
+ "rand_pcg",
+ "rand_xorshift 0.1.1",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "rand"
 version = "0.7.3"
@@ -4066,9 +4187,19 @@ checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
  "getrandom",
  "libc",
- "rand_chacha",
+ "rand_chacha 0.2.2",
  "rand_core 0.5.1",
- "rand_hc",
+ "rand_hc 0.2.0",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
+dependencies = [
+ "autocfg 0.1.7",
+ "rand_core 0.3.1",
 ]
 
 [[package]]
@@ -4105,6 +4236,15 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "rand_hc"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b40677c7be09ae76218dc623efbf7b18e34bced3f38883af07bb75630a21bc4"
+dependencies = [
+ "rand_core 0.3.1",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.2.0"
@@ -4114,6 +4254,59 @@ dependencies = [
  "rand_core 0.5.1",
 ]
 
+[[package]]
+name = "rand_isaac"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ded997c9d5f13925be2a6fd7e66bf1872597f759fd9dd93513dd7e92e5a5ee08"
+dependencies = [
+ "rand_core 0.3.1",
+]
+
+[[package]]
+name = "rand_jitter"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1166d5c91dc97b88d1decc3285bb0a99ed84b05cfd0bc2341bdf2d43fc41e39b"
+dependencies = [
+ "libc",
+ "rand_core 0.4.2",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "rand_os"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b75f676a1e053fc562eafbb47838d67c84801e38fc1ba459e8f180deabd5071"
+dependencies = [
+ "cloudabi 0.0.3",
+ "fuchsia-cprng",
+ "libc",
+ "rand_core 0.4.2",
+ "rdrand",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "rand_pcg"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abf9b09b01790cfe0364f52bf32995ea3c39f4d2dd011eac241d2914146d0b44"
+dependencies = [
+ "autocfg 0.1.7",
+ "rand_core 0.4.2",
+]
+
+[[package]]
+name = "rand_xorshift"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbf7e9e623549b0e21f6e97cf8ecf247c1a8fd2e8a992ae265314300b2455d5c"
+dependencies = [
+ "rand_core 0.3.1",
+]
+
 [[package]]
 name = "rand_xorshift"
 version = "0.2.0"
@@ -4625,14 +4818,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "serde_hex"
-version = "0.2.0"
-dependencies = [
- "hex 0.4.2",
- "serde",
-]
-
 [[package]]
 name = "serde_json"
 version = "1.0.57"
@@ -4667,6 +4852,14 @@ dependencies = [
  "url 2.1.1",
 ]
 
+[[package]]
+name = "serde_utils"
+version = "0.2.0"
+dependencies = [
+ "hex 0.4.2",
+ "serde",
+]
+
 [[package]]
 name = "serde_yaml"
 version = "0.8.13"
@@ -5690,6 +5883,19 @@ dependencies = [
  "tokio 0.2.22",
 ]
 
+[[package]]
+name = "tokio-tungstenite"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d9e878ad426ca286e4dcae09cbd4e1973a7f8987d97570e2469703dd7f5720c"
+dependencies = [
+ "futures-util",
+ "log 0.4.11",
+ "pin-project",
+ "tokio 0.2.22",
+ "tungstenite",
+]
+
 [[package]]
 name = "tokio-udp"
 version = "0.1.6"
@@ -5790,6 +5996,16 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "tracing-futures"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab7bb6f14721aa00656086e9335d363c5c8747bae02ebe32ea2c7dece5689b4c"
+dependencies = [
+ "pin-project",
+ "tracing",
+]
+
 [[package]]
 name = "trackable"
 version = "1.0.0"
@@ -5843,6 +6059,34 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
+[[package]]
+name = "tungstenite"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0308d80d86700c5878b9ef6321f020f29b1bb9d5ff3cab25e75e23f3a492a23"
+dependencies = [
+ "base64 0.12.3",
+ "byteorder",
+ "bytes 0.5.6",
+ "http 0.2.1",
+ "httparse",
+ "input_buffer",
+ "log 0.4.11",
+ "rand 0.7.3",
+ "sha-1 0.9.1",
+ "url 2.1.1",
+ "utf-8",
+]
+
+[[package]]
+name = "twoway"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59b11b2b5241ba34be09c3cc85a36e56e48f9888862e19cedf23336d35316ed1"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "typeable"
 version = "0.1.2"
@@ -5878,7 +6122,7 @@ dependencies = [
  "log 0.4.11",
  "merkle_proof",
  "rand 0.7.3",
- "rand_xorshift",
+ "rand_xorshift 0.2.0",
  "rayon",
  "rusqlite",
  "safe_arith",
@@ -6046,6 +6290,18 @@ dependencies = [
  "percent-encoding 2.1.0",
 ]
 
+[[package]]
+name = "urlencoding"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9232eb53352b4442e40d7900465dfc534e8cb2dc8f18656fcb2ac16112b5593"
+
+[[package]]
+name = "utf-8"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05e42f7c18b8f902290b009cde6d651262f956c98bc51bca4cd1d511c9cd85c7"
+
 [[package]]
 name = "uuid"
 version = "0.8.1"
@@ -6175,6 +6431,34 @@ dependencies = [
  "try-lock",
 ]
 
+[[package]]
+name = "warp"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f41be6df54c97904af01aa23e613d4521eed7ab23537cede692d4058f6449407"
+dependencies = [
+ "bytes 0.5.6",
+ "futures 0.3.5",
+ "headers",
+ "http 0.2.1",
+ "hyper 0.13.7",
+ "log 0.4.11",
+ "mime 0.3.16",
+ "mime_guess",
+ "multipart",
+ "pin-project",
+ "scoped-tls 1.0.0",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "tokio 0.2.22",
+ "tokio-tungstenite",
+ "tower-service",
+ "tracing",
+ "tracing-futures",
+ "urlencoding",
+]
+
 [[package]]
 name = "wasi"
 version = "0.9.0+wasi-snapshot-preview1"