diff --git a/packages/events/src/index.test.ts b/packages/events/src/index.test.ts
index f3690e08bd6..2054466830e 100644
--- a/packages/events/src/index.test.ts
+++ b/packages/events/src/index.test.ts
@@ -28,21 +28,80 @@ afterEach(async () => {
   resetServer()
 })
 
-test('creating a declaration is an idempotent operation', async () => {
+function createClient() {
   const createCaller = createCallerFactory(appRouter)
-
   const caller = createCaller({})
+  return caller
+}
+
+const client = createClient()
+test('event can be created and fetched', async () => {
+  const event = await client.event.create({
+    transactionId: '1',
+    event: { type: 'birth' }
+  })
+
+  const fetchedEvent = await client.event.get(event.id)
+
+  expect(fetchedEvent).toEqual(event)
+})
+
+test('creating an event is an idempotent operation', async () => {
   const db = await getClient()
 
-  await caller.event.create({
+  await client.event.create({
     transactionId: '1',
-    record: { type: 'birth', fields: [] }
+    event: { type: 'birth' }
   })
 
-  await caller.event.create({
+  await client.event.create({
     transactionId: '1',
-    record: { type: 'birth', fields: [] }
+    event: { type: 'birth' }
   })
 
   expect(await db.collection('events').find().toArray()).toHaveLength(1)
 })
+
+test('stored events can be modified', async () => {
+  const originalEvent = await client.event.create({
+    transactionId: '1',
+    event: { type: 'birth' }
+  })
+
+  const event = await client.event.patch({
+    id: originalEvent.id,
+    type: 'death'
+  })
+
+  expect(event.updatedAt).not.toBe(originalEvent.updatedAt)
+  expect(event.type).toBe('death')
+})
+
+test('actions can be added to created events', async () => {
+  const originalEvent = await client.event.create({
+    transactionId: '1',
+    event: { type: 'birth' }
+  })
+
+  const event = await client.event.actions.create({
+    eventId: originalEvent.id,
+    action: {
+      type: 'REGISTERED',
+      fields: [],
+      identifiers: {
+        trackingId: '123',
+        registrationNumber: '456'
+      }
+    }
+  })
+
+  expect(event.actions).toContainEqual(
+    expect.objectContaining({
+      type: 'REGISTERED',
+      identifiers: {
+        trackingId: '123',
+        registrationNumber: '456'
+      }
+    })
+  )
+})
diff --git a/packages/events/src/router.ts b/packages/events/src/router.ts
index e94a3eaf249..95a55b3f45c 100644
--- a/packages/events/src/router.ts
+++ b/packages/events/src/router.ts
@@ -12,7 +12,15 @@
 import { initTRPC } from '@trpc/server'
 import superjson from 'superjson'
 import { z } from 'zod'
-import { createEvent, EventInput, getEventById } from './service/events'
+import {
+  ActionInput,
+  addAction,
+  createEvent,
+  EventInput,
+  EventInputWithId,
+  getEventById,
+  patchEvent
+} from './service/events'
 
 export const t = initTRPC.create({
   transformer: superjson
@@ -32,14 +40,29 @@ export const appRouter = router({
       .input(
         z.object({
           transactionId: z.string(),
-          record: EventInput
+          event: EventInput
         })
       )
       .mutation(async (options) => {
-        return createEvent(options.input.record, options.input.transactionId)
+        return createEvent(options.input.event, options.input.transactionId)
       }),
+    patch: publicProcedure.input(EventInputWithId).mutation(async (options) => {
+      return patchEvent(options.input)
+    }),
     get: publicProcedure.input(z.string()).query(async ({ input }) => {
       return getEventById(input)
+    }),
+    actions: router({
+      create: publicProcedure
+        .input(
+          z.object({
+            eventId: z.string(),
+            action: ActionInput
+          })
+        )
+        .mutation(async (options) => {
+          return addAction(options.input.eventId, options.input.action)
+        })
     })
   })
 })
diff --git a/packages/events/src/service/events.ts b/packages/events/src/service/events.ts
index cdba3f7e7e8..40034353196 100644
--- a/packages/events/src/service/events.ts
+++ b/packages/events/src/service/events.ts
@@ -14,27 +14,14 @@ import { getUUID } from '@opencrvs/commons'
 import { z } from 'zod'
 
 export const EventInput = z.object({
-  type: z.string(),
-  fields: z.array(
-    z.object({
-      id: z.string(),
-      value: z.union([
-        z.string(),
-        z.number(),
-        z.array(
-          z.object({
-            optionValues: z.array(z.string()),
-            type: z.string(),
-            data: z.string(),
-            fileSize: z.number()
-          })
-        )
-      ])
-    })
-  )
+  type: z.string()
+})
+
+export const EventInputWithId = EventInput.extend({
+  id: z.string()
 })
 
-const ActionBase = z.object({
+const ActionInputBase = z.object({
   type: z.enum([
     'CREATED',
     'ASSIGNMENT',
@@ -44,8 +31,6 @@ const ActionBase = z.object({
     'CORRECTION',
     'DUPLICATES_DETECTED'
   ]),
-  createdAt: z.date(),
-  createdBy: z.string(),
   fields: z.array(
     z.object({
       id: z.string(),
@@ -65,11 +50,11 @@ const ActionBase = z.object({
   )
 })
 
-const Action = z.union([
-  ActionBase.extend({
+export const ActionInput = z.union([
+  ActionInputBase.extend({
     type: z.enum(['CREATED'])
   }),
-  ActionBase.extend({
+  ActionInputBase.extend({
     type: z.enum(['REGISTERED']),
     identifiers: z.object({
       trackingId: z.string(),
@@ -78,10 +63,20 @@ const Action = z.union([
   })
 ])
 
+const Action = ActionInput.and(
+  z.object({
+    createdAt: z.date(),
+    createdBy: z.string()
+  })
+)
+
+type ActionInput = z.infer<typeof ActionInput>
+
 export const Event = EventInput.extend({
   id: z.string(),
   type: z.string(), // Should be replaced by a reference to a form version
   createdAt: z.date(),
+  updatedAt: z.date(),
   actions: z.array(Action)
 })
 export type Event = z.infer<typeof Event>
@@ -107,6 +102,7 @@ class EventNotFoundError extends Error {
 
 export async function getEventById(id: string) {
   const db = await getClient()
+
   const collection = db.collection<z.infer<typeof Event>>('events')
   const event = await collection.findOne({ id: id })
   if (!event) {
@@ -136,6 +132,7 @@ export async function createEvent(
     id,
     transactionId,
     createdAt: now,
+    updatedAt: now,
     actions: [
       {
         type: 'CREATED',
@@ -148,3 +145,57 @@ export async function createEvent(
 
   return getEventById(id)
 }
+
+export async function addAction(eventId: string, action: ActionInput) {
+  const db = await getClient()
+  const collection = db.collection<z.infer<typeof Event>>('events')
+
+  const now = new Date()
+
+  await collection.updateOne(
+    {
+      id: eventId
+    },
+    {
+      $push: {
+        actions: {
+          ...action,
+          createdAt: now,
+          createdBy: '123-123-123'
+        }
+      }
+    }
+  )
+
+  return getEventById(eventId)
+}
+
+export async function patchEvent(
+  event: z.infer<typeof EventInputWithId>
+): Promise<Event> {
+  const existingEvent = await getEventById(event.id)
+
+  if (!existingEvent) {
+    throw new EventNotFoundError(event.id)
+  }
+
+  const db = await getClient()
+  const collection =
+    db.collection<z.infer<typeof EventWithTransactionId>>('events')
+
+  const now = new Date()
+
+  await collection.updateOne(
+    {
+      id: event.id
+    },
+    {
+      $set: {
+        ...event,
+        updatedAt: now
+      }
+    }
+  )
+
+  return getEventById(event.id)
+}