diff --git a/server/src/__tests__/openapi-routes.test.ts b/server/src/__tests__/openapi-routes.test.ts
index 212e26eb5a2..e0ebdac2cad 100644
--- a/server/src/__tests__/openapi-routes.test.ts
+++ b/server/src/__tests__/openapi-routes.test.ts
@@ -238,6 +238,19 @@ function loadSpecRoutes() {
 }
 
 describe("openapi routes", () => {
+  it("documents manager-only task privacy hints without protected scope identity", () => {
+    const spec = buildOpenApiSpec() as any;
+    const operation = spec.paths["/api/issues/{id}/privacy-constraints"].get;
+    const schema = operation.responses["200"].content["application/json"].schema;
+    expect(schema.properties).toEqual({
+      publicBlockedBy: { type: "string", enum: ["parent", "project"], nullable: true },
+      leavesPersonalProject: { type: "boolean" },
+    });
+    expect(schema.required).toEqual(["publicBlockedBy", "leavesPersonalProject"]);
+    expect(operation.responses["403"]).toBeDefined();
+    expect(operation.responses["404"]).toBeDefined();
+  });
+
   it("documents strict run-attributed feedback without a read endpoint", () => {
     const { spec } = loadSpecRoutes();
     const path = spec.paths["/api/companies/{companyId}/agent-commentary"];
diff --git a/server/src/routes/openapi.ts b/server/src/routes/openapi.ts
index 2ccf5f8cd97..b82b467bde6 100644
--- a/server/src/routes/openapi.ts
+++ b/server/src/routes/openapi.ts
@@ -4325,6 +4325,24 @@ registry.registerPath({
   responses: { 200: r.ok(), 401: r.unauthorized },
 });
 
+registry.registerPath({
+  method: "get",
+  path: "/api/issues/{id}/privacy-constraints",
+  tags: ["issues"],
+  summary: "Get task privacy action constraints for an authorized manager",
+  description: "Returns action hints without disclosing protected parent or project identity. Visibility writes recheck the current rules under the privacy-tree lock.",
+  request: { params: z.object({ id: z.string() }) },
+  responses: {
+    200: r.ok(z.object({
+      publicBlockedBy: z.enum(["parent", "project"]).nullable(),
+      leavesPersonalProject: z.boolean(),
+    }).strict()),
+    401: r.unauthorized,
+    403: r.forbidden,
+    404: r.notFound,
+  },
+});
+
 registry.registerPath({
   method: "get",
   path: "/api/issues/{id}/access-grants",