diff --git a/packages/core/src/tools/experimentalFeatures.ts b/packages/core/src/tools/experimentalFeatures.ts
index 80831c87ce..94748fe737 100644
--- a/packages/core/src/tools/experimentalFeatures.ts
+++ b/packages/core/src/tools/experimentalFeatures.ts
@@ -17,6 +17,7 @@ export enum ExperimentalFeature {
   COLLECT_FLUSH_REASON = 'collect_flush_reason',
   ZERO_LCP_TELEMETRY = 'zero_lcp_telemetry',
   DISABLE_REPLAY_INLINE_CSS = 'disable_replay_inline_css',
+  WRITABLE_RESOURCE_GRAPHQL = 'writable_resource_graphql',
 }
 
 const enabledExperimentalFeatures: Set<ExperimentalFeature> = new Set()
diff --git a/packages/core/test/emulate/mockExperimentalFeatures.ts b/packages/core/test/emulate/mockExperimentalFeatures.ts
new file mode 100644
index 0000000000..0a1f003028
--- /dev/null
+++ b/packages/core/test/emulate/mockExperimentalFeatures.ts
@@ -0,0 +1,11 @@
+import {
+  resetExperimentalFeatures,
+  type ExperimentalFeature,
+  addExperimentalFeatures,
+} from '../../src/tools/experimentalFeatures'
+import { registerCleanupTask } from '../registerCleanupTask'
+
+export function mockExperimentalFeatures(enabledFeatures: ExperimentalFeature[]) {
+  addExperimentalFeatures(enabledFeatures)
+  registerCleanupTask(resetExperimentalFeatures)
+}
diff --git a/packages/core/test/index.ts b/packages/core/test/index.ts
index f359253f6c..6ef51ab445 100644
--- a/packages/core/test/index.ts
+++ b/packages/core/test/index.ts
@@ -16,3 +16,4 @@ export * from './emulate/eventBridge'
 export * from './emulate/eventBridge'
 export * from './emulate/stubStorages'
 export * from './emulate/mockFlushController'
+export * from './emulate/mockExperimentalFeatures'
diff --git a/packages/rum-core/src/domain/assembly.spec.ts b/packages/rum-core/src/domain/assembly.spec.ts
index ffbc02b6cc..5389d99348 100644
--- a/packages/rum-core/src/domain/assembly.spec.ts
+++ b/packages/rum-core/src/domain/assembly.spec.ts
@@ -1,10 +1,11 @@
 import type { ClocksState, RelativeTime } from '@datadog/browser-core'
-import { ErrorSource, ONE_MINUTE, display } from '@datadog/browser-core'
+import { ErrorSource, ExperimentalFeature, ONE_MINUTE, display } from '@datadog/browser-core'
 import {
   initEventBridgeStub,
   deleteEventBridgeStub,
   cleanupSyntheticsWorkerValues,
   mockSyntheticsWorkerValues,
+  mockExperimentalFeatures,
 } from '@datadog/browser-core/test'
 import type { TestSetupBuilder } from '../../test'
 import {
@@ -17,7 +18,7 @@ import {
 import type { RumEventDomainContext } from '../domainContext.types'
 import type { RawRumActionEvent, RawRumErrorEvent, RawRumEvent } from '../rawRumEvent.types'
 import { RumEventType } from '../rawRumEvent.types'
-import type { RumActionEvent, RumErrorEvent, RumEvent } from '../rumEvent.types'
+import type { RumActionEvent, RumErrorEvent, RumEvent, RumResourceEvent } from '../rumEvent.types'
 import { startRumAssembly } from './assembly'
 import type { LifeCycle, RawRumEventCollectedData } from './lifeCycle'
 import { LifeCycleEventType } from './lifeCycle'
@@ -109,6 +110,38 @@ describe('rum assembly', () => {
 
           expect(serverRumEvents[0].view.name).toBe('added')
         })
+
+        describe('field resource.graphql on Resource events', () => {
+          it('by default, it should not be modifiable', () => {
+            const { lifeCycle } = setupBuilder
+              .withConfiguration({
+                beforeSend: (event) => (event.resource!.graphql = { operationType: 'query' }),
+              })
+              .build()
+
+            notifyRawRumEvent(lifeCycle, {
+              rawRumEvent: createRawRumEvent(RumEventType.RESOURCE, { resource: { url: '/path?foo=bar' } }),
+            })
+
+            expect((serverRumEvents[0] as RumResourceEvent).resource.graphql).toBeUndefined()
+          })
+
+          it('with the writable_resource_graphql experimental flag is set, it should be modifiable', () => {
+            mockExperimentalFeatures([ExperimentalFeature.WRITABLE_RESOURCE_GRAPHQL])
+
+            const { lifeCycle } = setupBuilder
+              .withConfiguration({
+                beforeSend: (event) => (event.resource!.graphql = { operationType: 'query' }),
+              })
+              .build()
+
+            notifyRawRumEvent(lifeCycle, {
+              rawRumEvent: createRawRumEvent(RumEventType.RESOURCE, { resource: { url: '/path?foo=bar' } }),
+            })
+
+            expect((serverRumEvents[0] as RumResourceEvent).resource.graphql).toEqual({ operationType: 'query' })
+          })
+        })
       })
 
       describe('context field', () => {
diff --git a/packages/rum-core/src/domain/assembly.ts b/packages/rum-core/src/domain/assembly.ts
index afd0c32983..20e7577d61 100644
--- a/packages/rum-core/src/domain/assembly.ts
+++ b/packages/rum-core/src/domain/assembly.ts
@@ -9,6 +9,8 @@ import {
   canUseEventBridge,
   assign,
   round,
+  isExperimentalFeatureEnabled,
+  ExperimentalFeature,
 } from '@datadog/browser-core'
 import type { RumEventDomainContext } from '../domainContext.types'
 import type {
@@ -84,6 +86,9 @@ export function startRumAssembly(
       {
         'resource.url': 'string',
       },
+      isExperimentalFeatureEnabled(ExperimentalFeature.WRITABLE_RESOURCE_GRAPHQL) && {
+        'resource.graphql': 'object',
+      },
       USER_CUSTOMIZABLE_FIELD_PATHS,
       VIEW_MODIFIABLE_FIELD_PATHS
     ),