diff --git a/packages/shared/src/constants.ts b/packages/shared/src/constants.ts
index 9cf22a56f30..001ccee26f2 100644
--- a/packages/shared/src/constants.ts
+++ b/packages/shared/src/constants.ts
@@ -628,7 +628,6 @@ export const PLUGIN_CAPABILITIES = [
   "issue.comments.read",
   "issue.documents.read",
   "agents.read",
-  "agents.managed",
   "goals.read",
   "goals.create",
   "goals.update",
diff --git a/packages/shared/src/validators/plugin.test.ts b/packages/shared/src/validators/plugin.test.ts
index 09f18759fb8..b8b3cbdab5f 100644
--- a/packages/shared/src/validators/plugin.test.ts
+++ b/packages/shared/src/validators/plugin.test.ts
@@ -1,6 +1,13 @@
 import { describe, expect, it } from "vitest";
+import { PLUGIN_CAPABILITIES } from "../constants.js";
 import { pluginUiSlotDeclarationSchema } from "./plugin.js";
 
+describe("plugin capability constants", () => {
+  it("exposes each capability once", () => {
+    expect(new Set(PLUGIN_CAPABILITIES).size).toBe(PLUGIN_CAPABILITIES.length);
+  });
+});
+
 describe("plugin UI slot validators", () => {
   it("accepts route-scoped sidebar slots with a routePath", () => {
     const parsed = pluginUiSlotDeclarationSchema.parse({