diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4489ce9..bb0c3ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## Unreleased
 
+### Changed
+
+- Added request body to parameters of ACL context extraction custom function
+
 ## [3.3.0] - 2024-10-14
 
 ### Added
diff --git a/src/lib/extract-acl-context.ts b/src/lib/extract-acl-context.ts
index d797b68..6e0fd9d 100644
--- a/src/lib/extract-acl-context.ts
+++ b/src/lib/extract-acl-context.ts
@@ -34,6 +34,7 @@ export const extractAclContext = async (
 ): Promise<string[]> => {
   if (config.ACL_CONTEXT_BUILDER !== undefined) {
     const aclContext = await config.ACL_CONTEXT_BUILDER({
+      body: request.body,
       headers: request.headers,
       method: request.method,
       pathParams: request.params,
@@ -46,7 +47,7 @@ export const extractAclContext = async (
       ? aclContext.filter(element => typeof element === 'string')
       : []
   }
-  // todo
+
   // @ts-expect-error this is a decorated request
   // eslint-disable-next-line @typescript-eslint/no-unsafe-call
   const groups = request.getGroups() as string[]
diff --git a/src/sdk/sandbox.ts b/src/sdk/sandbox.ts
index 6f2f1b9..4fc79d5 100644
--- a/src/sdk/sandbox.ts
+++ b/src/sdk/sandbox.ts
@@ -18,6 +18,7 @@ import type { QuickJSContext } from 'quickjs-emscripten'
 import { newAsyncRuntime } from 'quickjs-emscripten'
 
 export interface AclContextBuilderInput {
+  body?: unknown
   headers: Record<string, string | string[] | undefined>
   method: string
   pathParams: unknown
@@ -45,6 +46,7 @@ class Sandbox {
     if (cachedValue !== undefined) {
       return cachedValue
     }
+
     /* Follows an alternative if sandbox is too slow
     const script = `data:text/javascript;base64,${Buffer.from(CODE).toString('base64')}`
     const module = await import(script)
@@ -63,9 +65,11 @@ class Sandbox {
       const error = context.dump(wrappedResult.error) as { message?: string }
       throw new Error(`External ACL context builder failed: ${error.message}`)
     }
+
     context.unwrapResult(wrappedResult).dispose()
     const result = context.getProp(context.global, 'result').consume(context.dump.bind(context)) as string[]
     this.cache[hash] = result
+
     return result
   }
 }
diff --git a/src/sdk/test/sandbox.test.ts b/src/sdk/test/sandbox.test.ts
index 98126d8..868ae45 100644
--- a/src/sdk/test/sandbox.test.ts
+++ b/src/sdk/test/sandbox.test.ts
@@ -30,6 +30,7 @@ describe('Sandbox', () => {
 
   it('Scripts throws error', async () => {
     const input: AclContextBuilderInput = {
+      body: {},
       // @ts-expect-error needed for test
       headers: undefined,
       method: 'GET',
@@ -43,6 +44,7 @@ describe('Sandbox', () => {
 
   it('Eval ACL context builder', async () => {
     const input: AclContextBuilderInput = {
+      body: {},
       headers: {
         userproperties: 'property',
       },