diff --git a/knowledge-fs/packages/api/src/durable-deletion-handlers.test.ts b/knowledge-fs/packages/api/src/durable-deletion-handlers.test.ts
index a1821df29e3..1ec40c524a4 100644
--- a/knowledge-fs/packages/api/src/durable-deletion-handlers.test.ts
+++ b/knowledge-fs/packages/api/src/durable-deletion-handlers.test.ts
@@ -13,6 +13,7 @@ const SPACE_ID = "018f0d60-7a49-7cc2-9c1b-5b36f18f2c42";
 const SOURCE_ID = "018f0d60-7a49-7cc2-9c1b-5b36f18f2c43";
 const DOCUMENT_ID = "018f0d60-7a49-7cc2-9c1b-5b36f18f2c44";
 const JOB_ID = "018f0d60-7a49-7cc2-9c1b-5b36f18f2c45";
+const CAPABILITY_GRANT_ID = "018f0d60-7a49-7cc2-9c1b-5b36f18f2c46";
 const NOW = "2026-07-14T12:00:00.000Z";
 
 describe("durable deletion handlers", () => {
@@ -116,6 +117,7 @@ describe("durable deletion handlers", () => {
     );
     expect(service.requestDocumentDeletion).not.toHaveBeenCalled();
     await expect(bulkOperations.get({ id: JOB_ID, tenantId: "tenant-1" })).resolves.toMatchObject({
+      capabilityGrantId: CAPABILITY_GRANT_ID,
       items: [expect.objectContaining({ deletionJobId: JOB_ID, documentId: DOCUMENT_ID })],
       type: "document_delete",
     });
@@ -145,6 +147,7 @@ describe("durable deletion handlers", () => {
       }),
     );
     await expect(bulkOperations.get({ id: JOB_ID, tenantId: "tenant-1" })).resolves.toMatchObject({
+      capabilityGrantId: CAPABILITY_GRANT_ID,
       items: [expect.objectContaining({ deletionJobId: JOB_ID, documentId: DOCUMENT_ID })],
       type: "document_delete",
     });
@@ -204,6 +207,12 @@ function testApp(
   const app = createKnowledgeGatewayApp();
   app.use("*", async (context, next) => {
     context.set("callerKind", callerKind);
+    if (callerKind === "interactive") {
+      context.set("capabilityV2Grant", {
+        contentScopeIds: [],
+        grantId: CAPABILITY_GRANT_ID,
+      } as never);
+    }
     context.set("subject", {
       scopes: ["knowledge-spaces:read", "knowledge-spaces:write"],
       subjectId: "owner-1",
diff --git a/knowledge-fs/packages/api/src/durable-deletion-handlers.ts b/knowledge-fs/packages/api/src/durable-deletion-handlers.ts
index f4b4d7cd387..16be7c1b144 100644
--- a/knowledge-fs/packages/api/src/durable-deletion-handlers.ts
+++ b/knowledge-fs/packages/api/src/durable-deletion-handlers.ts
@@ -194,6 +194,7 @@ export function registerDurableDeletionHandlers({
           knowledgeSpaceId: params.id,
           requestedBySubjectId: subject.subjectId,
           tenantId: subject.tenantId,
+          ...(principal.capability ? { capabilityGrantId: principal.capability.grantId } : {}),
         });
         context.header("Location", `/knowledge-spaces/${params.id}/background-tasks`);
         return context.json(accepted, 202);
@@ -238,8 +239,9 @@ export function registerDurableDeletionHandlers({
       const body = context.req.valid("json") as DeleteLogicalDocumentBody;
       const headers = context.req.valid("header") as DurableDeletionIdempotencyHeaders;
       try {
+        const principal = deletionPrincipal(context);
         const accepted = await service.requestLogicalDocumentDeletion({
-          ...deletionPrincipal(context),
+          ...principal,
           documentId: params.documentId,
           expectedRevision: body.expectedRevision,
           idempotencyKey: headers["idempotency-key"],
@@ -253,6 +255,7 @@ export function registerDurableDeletionHandlers({
           knowledgeSpaceId: params.id,
           requestedBySubjectId: subject.subjectId,
           tenantId: subject.tenantId,
+          ...(principal.capability ? { capabilityGrantId: principal.capability.grantId } : {}),
         });
         context.header("Location", accepted.statusUrl);
         return context.json(accepted, 202);
@@ -301,6 +304,7 @@ export function registerDurableDeletionHandlers({
 }
 
 async function ensureLogicalDeletionBackgroundTask(input: {
+  readonly capabilityGrantId?: string | undefined;
   readonly bulkOperations: BulkOperationRepository;
   readonly id: string;
   readonly items: readonly {
@@ -315,6 +319,7 @@ async function ensureLogicalDeletionBackgroundTask(input: {
   const existing = await input.bulkOperations.get({ id: input.id, tenantId: input.tenantId });
   if (existing) return;
   await input.bulkOperations.create({
+    ...(input.capabilityGrantId ? { capabilityGrantId: input.capabilityGrantId } : {}),
     id: input.id,
     items: input.items.map((item) => ({ ...item, status: "queued" as const })),
     knowledgeSpaceId: input.knowledgeSpaceId,