[codex] Harden plugin runtime invocation scope (#6547)

## Thinking Path

> - Paperclip orchestrates AI-agent companies through a company-scoped
control plane.
> - Plugins extend that control plane, but plugin workers still call
back into host APIs.
> - Those worker-to-host calls need the same company boundary guarantees
as normal API routes.
> - Plugin action handlers also need authenticated actor context from
the host instead of trusting caller-supplied params.
> - This pull request hardens plugin bridge/action scope and keeps
plugin operation issues out of normal issue surfaces.
> - The benefit is safer plugin execution with clearer authorization
boundaries and better test coverage.

## What Changed

- Added host-owned invocation context plumbing for nested plugin worker
calls.
- Added actor context to plugin `performAction` calls and test harness
helpers.
- Enforced company invocation scope on worker-to-host calls and filtered
company lists to the active invocation scope.
- Extended plugin action route tests for board and agent actor context,
spoofed company params, and cross-company rejection.
- Extended plugin worker manager coverage for invocation-scope
propagation.
- Filtered typed and legacy plugin operation issue origins from default
issue/inbox lists.

## Verification

- `pnpm --filter @paperclipai/plugin-sdk build`
- `NODE_ENV=test pnpm exec vitest run
packages/plugins/sdk/tests/host-client-factory.test.ts
packages/plugins/sdk/tests/testing-actions.test.ts
server/src/__tests__/plugin-routes-authz.test.ts
server/src/__tests__/plugin-worker-manager.test.ts
server/src/__tests__/issues-service.test.ts`

Note: embedded Postgres issue-service tests reported host-level Postgres
init skip for 47 tests; the non-embedded targeted tests passed.

## Risks

- Medium: plugin host authorization paths are sensitive, and external
plugins may rely on previously loose company params.
- Mitigation: the change only tightens calls when the host attached a
company invocation scope and includes explicit tests for board, agent,
and nested worker calls.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI GPT-5 Codex via `codex_local`, tool-enabled coding session;
exact context window not exposed by this runtime.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

packages/plugins/sdk/src/host-client-factory.ts

@@ -79,7 +79,7 @@ export class CapabilityDeniedError extends Error {
  */
 export class InvocationScopeDeniedError extends Error {
   override readonly name = "InvocationScopeDeniedError";
-  readonly code = PLUGIN_RPC_ERROR_CODES.CAPABILITY_DENIED;
+  readonly code = PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED;
 
   constructor(pluginId: string, method: string, message: string) {
     super(`Plugin "${pluginId}" is not allowed to perform "${method}": ${message}`);

packages/plugins/sdk/src/index.ts

@@ -149,6 +149,9 @@ export type {
   RunJobParams,
   GetDataParams,
   PerformActionParams,
+  PluginPerformActionActorType,
+  PluginPerformActionActorContext,
+  PluginPerformActionContext,
   ExecuteToolParams,
   PluginEnvironmentDiagnostic,
   PluginEnvironmentDriverBaseParams,

packages/plugins/sdk/src/protocol.ts

@@ -233,6 +233,8 @@ export const PLUGIN_RPC_ERROR_CODES = {
   TIMEOUT: -32003,
   /** The worker does not implement the requested optional method. */
   METHOD_NOT_IMPLEMENTED: -32004,
+  /** The worker→host call attempted to escape the current invocation company scope. */
+  INVOCATION_SCOPE_DENIED: -32005,
   /** A catch-all for errors that do not fit other categories. */
   UNKNOWN: -32099,
 } as const;
@@ -368,6 +370,28 @@ export interface GetDataParams {
  *
  * @see PLUGIN_SPEC.md §13.9 — `performAction`
  */
+export type PluginPerformActionActorType = "user" | "agent" | "system";
+
+export interface PluginPerformActionActorContext {
+  /** Authenticated principal type resolved by the Paperclip host. */
+  type: PluginPerformActionActorType;
+  /** Authenticated board user id when `type === "user"`, otherwise null. */
+  userId: string | null;
+  /** Authenticated agent id when `type === "agent"`, otherwise null. */
+  agentId: string | null;
+  /** Authenticated heartbeat/run id when available. */
+  runId: string | null;
+  /** Company id authorized by the host bridge for this action, when applicable. */
+  companyId: string | null;
+}
+
+export interface PluginPerformActionContext {
+  /** Immutable authenticated actor context supplied by the host. */
+  actor: Readonly<PluginPerformActionActorContext>;
+  /** Convenience alias for `actor.companyId`. */
+  companyId: string | null;
+}
+
 export interface PerformActionParams {
   /** Plugin-defined action key (e.g. `"resync"`). */
   key: string;
@@ -375,6 +399,8 @@ export interface PerformActionParams {
   companyId?: string | null;
   /** Action parameters from the UI. */
   params: Record<string, unknown>;
+  /** Authenticated actor context resolved by the host, never by caller params. */
+  actorContext?: PluginPerformActionActorContext | null;
   /** Optional launcher/container metadata from the host render environment. */
   renderEnvironment?: PluginLauncherRenderContextSnapshot | null;
 }

packages/plugins/sdk/src/testing.ts

@@ -57,6 +57,8 @@ import type {
   PluginEnvironmentRealizeWorkspaceResult,
   PluginEnvironmentExecuteParams,
   PluginEnvironmentExecuteResult,
+  PluginPerformActionActorContext,
+  PluginPerformActionContext,
 } from "./protocol.js";
 
 export interface TestHarnessOptions {
@@ -74,6 +76,20 @@ export interface TestHarnessLogEntry {
   meta?: Record<string, unknown>;
 }
 
+export interface TestHarnessPerformActionOptions {
+  /**
+   * Authenticated actor context to expose to the action handler. Omitted fields
+   * default to null, and `type` defaults to `system`.
+   */
+  actor?: Partial<PluginPerformActionActorContext> | null;
+  /**
+   * Host-authorized company scope. When provided, this is injected into
+   * `params.companyId` so tests match the production bridge's anti-spoofing
+   * behavior.
+   */
+  companyId?: string | null;
+}
+
 export interface TestHarness {
   /** Fully-typed in-memory plugin context passed to `plugin.setup(ctx)`. */
   ctx: PluginContext;
@@ -98,7 +114,11 @@ export interface TestHarness {
   /** Invoke a `ctx.data.register(...)` handler by key. */
   getData<T = unknown>(key: string, params?: Record<string, unknown>): Promise<T>;
   /** Invoke a `ctx.actions.register(...)` handler by key. */
-  performAction<T = unknown>(key: string, params?: Record<string, unknown>): Promise<T>;
+  performAction<T = unknown>(
+    key: string,
+    params?: Record<string, unknown>,
+    options?: TestHarnessPerformActionOptions,
+  ): Promise<T>;
   /** Execute a registered tool handler via `ctx.tools.execute(...)`. */
   executeTool<T = ToolResult>(name: string, params: unknown, runCtx?: Partial<ToolRunContext>): Promise<T>;
   /** Read raw in-memory state for assertions. */
@@ -491,7 +511,10 @@ export function createTestHarness(options: TestHarnessOptions): TestHarness {
   const jobs = new Map<string, (job: PluginJobContext) => Promise<void>>();
   const launchers = new Map<string, PluginLauncherRegistration>();
   const dataHandlers = new Map<string, (params: Record<string, unknown>) => Promise<unknown>>();
-  const actionHandlers = new Map<string, (params: Record<string, unknown>) => Promise<unknown>>();
+  const actionHandlers = new Map<
+    string,
+    (params: Record<string, unknown>, context: PluginPerformActionContext) => Promise<unknown>
+  >();
   const toolHandlers = new Map<string, (params: unknown, runCtx: ToolRunContext) => Promise<ToolResult>>();
 
   function localFolderKey(companyId: string, folderKey: string): string {
@@ -502,6 +525,41 @@ export function createTestHarness(options: TestHarnessOptions): TestHarness {
     return `${localFolderKey(companyId, folderKey)}:${relativePath}`;
   }
 
+  function stringOrNull(value: unknown): string | null {
+    return typeof value === "string" && value.trim().length > 0 ? value.trim() : null;
+  }
+
+  function actorTypeOrSystem(value: unknown): PluginPerformActionActorContext["type"] {
+    return value === "user" || value === "agent" || value === "system" ? value : "system";
+  }
+
+  function actionContextFor(
+    params: Record<string, unknown>,
+    options?: TestHarnessPerformActionOptions,
+  ): PluginPerformActionContext {
+    const actorInput = options?.actor ?? null;
+    const companyId = stringOrNull(options?.companyId) ?? stringOrNull(actorInput?.companyId) ?? stringOrNull(params.companyId);
+    const actor = Object.freeze({
+      type: actorTypeOrSystem(actorInput?.type),
+      userId: stringOrNull(actorInput?.userId),
+      agentId: stringOrNull(actorInput?.agentId),
+      runId: stringOrNull(actorInput?.runId),
+      companyId,
+    });
+    return Object.freeze({ actor, companyId });
+  }
+
+  function paramsWithHostCompanyScope(
+    params: Record<string, unknown>,
+    context: PluginPerformActionContext,
+    options?: TestHarnessPerformActionOptions,
+  ): Record<string, unknown> {
+    if (Object.prototype.hasOwnProperty.call(options ?? {}, "companyId")) {
+      return context.companyId ? { ...params, companyId: context.companyId } : { ...params };
+    }
+    return params;
+  }
+
   function normalizeLocalFolderRelativePath(relativePath: string): string {
     const parts: string[] = [];
     for (const segment of relativePath.split(/[\\/]+/)) {
@@ -2302,10 +2360,15 @@ export function createTestHarness(options: TestHarnessOptions): TestHarness {
       if (!handler) throw new Error(`No data handler registered for '${key}'`);
       return await handler(params) as T;
     },
-    async performAction<T = unknown>(key: string, params: Record<string, unknown> = {}) {
+    async performAction<T = unknown>(
+      key: string,
+      params: Record<string, unknown> = {},
+      options?: TestHarnessPerformActionOptions,
+    ) {
       const handler = actionHandlers.get(key);
       if (!handler) throw new Error(`No action handler registered for '${key}'`);
-      return await handler(params) as T;
+      const context = actionContextFor(params, options);
+      return await handler(paramsWithHostCompanyScope(params, context, options), context) as T;
     },
     async executeTool<T = ToolResult>(name: string, params: unknown, runCtx: Partial<ToolRunContext> = {}) {
       const handler = toolHandlers.get(name);

packages/plugins/sdk/src/types.ts

@@ -46,6 +46,7 @@ import type {
   PrincipalPermissionGrant,
   PrincipalType,
 } from "@paperclipai/shared";
+import type { PluginPerformActionContext } from "./protocol.js";
 
 // ---------------------------------------------------------------------------
 // Re-exports from @paperclipai/shared (plugin authors import from one place)
@@ -957,9 +958,12 @@ export interface PluginActionsClient {
    * Register a handler for a plugin-defined action key.
    *
    * @param key - Stable string identifier for this action (e.g. `"resync"`)
-   * @param handler - Async function that receives action params and returns a result
+   * @param handler - Async function that receives action params plus immutable host actor context and returns a result
    */
-  register(key: string, handler: (params: Record<string, unknown>) => Promise<unknown>): void;
+  register(
+    key: string,
+    handler: (params: Record<string, unknown>, context: PluginPerformActionContext) => Promise<unknown>,
+  ): void;
 }
 
 /**

packages/plugins/sdk/src/ui/types.ts

@@ -54,6 +54,7 @@ export type {
  * Error codes:
  * - `WORKER_UNAVAILABLE` — plugin worker is not running
  * - `CAPABILITY_DENIED` — plugin lacks the required capability
+ * - `INVOCATION_SCOPE_DENIED` — plugin call escaped the invocation company scope
  * - `WORKER_ERROR` — worker returned an error from its handler
  * - `TIMEOUT` — worker did not respond within the configured timeout
  * - `UNKNOWN` — unexpected bridge-level failure

packages/plugins/sdk/src/worker-rpc-host.ts

@@ -78,6 +78,8 @@ import type {
   RunJobParams,
   GetDataParams,
   PerformActionParams,
+  PluginPerformActionActorContext,
+  PluginPerformActionContext,
   ExecuteToolParams,
   PluginEnvironmentAcquireLeaseParams,
   PluginEnvironmentDestroyLeaseParams,
@@ -289,7 +291,10 @@ export function startWorkerRpcHost(options: WorkerRpcHostOptions): WorkerRpcHost
   const jobHandlers = new Map<string, (job: PluginJobContext) => Promise<void>>();
   const launcherRegistrations = new Map<string, PluginLauncherRegistration>();
   const dataHandlers = new Map<string, (params: Record<string, unknown>) => Promise<unknown>>();
-  const actionHandlers = new Map<string, (params: Record<string, unknown>) => Promise<unknown>>();
+  const actionHandlers = new Map<
+    string,
+    (params: Record<string, unknown>, context: PluginPerformActionContext) => Promise<unknown>
+  >();
   const toolHandlers = new Map<string, {
     declaration: Pick<import("@paperclipai/shared").PluginToolDeclaration, "displayName" | "description" | "parametersSchema">;
     fn: (params: unknown, runCtx: ToolRunContext) => Promise<ToolResult>;
@@ -1184,7 +1189,10 @@ export function startWorkerRpcHost(options: WorkerRpcHostOptions): WorkerRpcHost
       },
 
       actions: {
-        register(key: string, handler: (params: Record<string, unknown>) => Promise<unknown>): void {
+        register(
+          key: string,
+          handler: (params: Record<string, unknown>, context: PluginPerformActionContext) => Promise<unknown>,
+        ): void {
           actionHandlers.set(key, handler);
         },
       },
@@ -1514,16 +1522,44 @@ export function startWorkerRpcHost(options: WorkerRpcHostOptions): WorkerRpcHost
     });
   }
 
+  function stringOrNull(value: unknown): string | null {
+    return typeof value === "string" && value.trim().length > 0 ? value.trim() : null;
+  }
+
+  function actorTypeOrSystem(value: unknown): PluginPerformActionActorContext["type"] {
+    return value === "user" || value === "agent" || value === "system" ? value : "system";
+  }
+
+  function actionContextFromParams(params: PerformActionParams): PluginPerformActionContext {
+    const rawActor = params.actorContext && typeof params.actorContext === "object"
+      ? params.actorContext
+      : null;
+    const actor = Object.freeze({
+      type: actorTypeOrSystem(rawActor?.type),
+      userId: stringOrNull(rawActor?.userId),
+      agentId: stringOrNull(rawActor?.agentId),
+      runId: stringOrNull(rawActor?.runId),
+      companyId: stringOrNull(rawActor?.companyId),
+    });
+    return Object.freeze({
+      actor,
+      companyId: actor.companyId,
+    });
+  }
+
   async function handlePerformAction(params: PerformActionParams): Promise<unknown> {
     const handler = actionHandlers.get(params.key);
     if (!handler) {
       throw new Error(`No action handler registered for key "${params.key}"`);
     }
-    return handler({
-      ...params.params,
-      ...(params.companyId === undefined ? {} : { companyId: params.companyId }),
-      ...(params.renderEnvironment === undefined ? {} : { renderEnvironment: params.renderEnvironment }),
-    });
+    return handler(
+      {
+        ...params.params,
+        ...(params.companyId === undefined ? {} : { companyId: params.companyId }),
+        ...(params.renderEnvironment === undefined ? {} : { renderEnvironment: params.renderEnvironment }),
+      },
+      actionContextFromParams(params),
+    );
   }
 
   async function handleExecuteTool(params: ExecuteToolParams): Promise<ToolResult> {

packages/plugins/sdk/tests/host-client-factory.test.ts

@@ -6,6 +6,7 @@ import {
   createHostClientHandlers,
   InvocationScopeDeniedError,
 } from "../src/host-client-factory.js";
+import { PLUGIN_RPC_ERROR_CODES } from "../src/protocol.js";
 
 describe("createHostClientHandlers invocation company scope", () => {
   it("rejects company-scoped host calls outside the current invocation company", async () => {
@@ -28,6 +29,14 @@ describe("createHostClientHandlers invocation company scope", () => {
         { invocationScope: { companyId: "company-a" } },
       ),
     ).rejects.toBeInstanceOf(InvocationScopeDeniedError);
+    await expect(
+      handlers["projects.list"](
+        { companyId: "company-b" },
+        { invocationScope: { companyId: "company-a" } },
+      ),
+    ).rejects.toMatchObject({
+      code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
+    });
     expect(projectsList).not.toHaveBeenCalled();
   });
 

packages/plugins/sdk/tests/testing-actions.test.ts

@@ -0,0 +1,74 @@
+import { describe, expect, it } from "vitest";
+
+import { createTestHarness } from "../src/testing.js";
+import type { PaperclipPluginManifestV1 } from "../src/types.js";
+
+const manifest = {
+  id: "paperclip.test-actions",
+  apiVersion: 1,
+  version: "1.0.0",
+  displayName: "Test Actions",
+  description: "Test plugin",
+  author: "Paperclip",
+  categories: ["automation"],
+  capabilities: [],
+  entrypoints: {},
+} satisfies PaperclipPluginManifestV1;
+
+describe("createTestHarness action context", () => {
+  it("passes immutable authenticated actor context and overrides caller company scope", async () => {
+    const harness = createTestHarness({ manifest });
+
+    harness.ctx.actions.register("inspect", async (params, context) => ({
+      paramsCompanyId: params.companyId,
+      actor: context.actor,
+      companyId: context.companyId,
+      contextFrozen: Object.isFrozen(context),
+      actorFrozen: Object.isFrozen(context.actor),
+    }));
+
+    const result = await harness.performAction<{
+      paramsCompanyId: unknown;
+      actor: {
+        type: string;
+        userId: string | null;
+        agentId: string | null;
+        runId: string | null;
+        companyId: string | null;
+      };
+      companyId: string | null;
+      contextFrozen: boolean;
+      actorFrozen: boolean;
+    }>(
+      "inspect",
+      { companyId: "spoofed-company", value: true },
+      {
+        companyId: "host-company",
+        actor: {
+          type: "user",
+          userId: "board-user-1",
+          runId: "run-1",
+        },
+      },
+    );
+
+    expect(result.paramsCompanyId).toBe("host-company");
+    expect(result.companyId).toBe("host-company");
+    expect(result.actor).toEqual({
+      type: "user",
+      userId: "board-user-1",
+      agentId: null,
+      runId: "run-1",
+      companyId: "host-company",
+    });
+    expect(result.contextFrozen).toBe(true);
+    expect(result.actorFrozen).toBe(true);
+  });
+
+  it("keeps existing one-argument action handlers compatible", async () => {
+    const harness = createTestHarness({ manifest });
+    harness.ctx.actions.register("legacy", async (params) => ({ ok: params.ok }));
+
+    await expect(harness.performAction("legacy", { ok: true })).resolves.toEqual({ ok: true });
+  });
+});

packages/plugins/sdk/tests/worker-rpc-host.test.ts

@@ -71,6 +71,90 @@ describe("isWorkerEntrypoint", () => {
   });
 });
 
+describe("worker performAction context", () => {
+  it("does not derive context companyId from caller params without host actor context", async () => {
+    const hostToWorker = new PassThrough();
+    const workerToHost = new PassThrough();
+    const hostReadline = createInterface({ input: workerToHost });
+    const pending = new Map<string, (response: JsonRpcResponse) => void>();
+    let nextRequestId = 1;
+    const plugin = definePlugin({
+      async setup(ctx) {
+        ctx.actions.register("inspect", async (params, context) => ({
+          paramsCompanyId: params.companyId,
+          actor: context.actor,
+          companyId: context.companyId,
+        }));
+      },
+    });
+    const worker = startWorkerRpcHost({
+      plugin,
+      stdin: hostToWorker,
+      stdout: workerToHost,
+    });
+
+    function callWorker(method: string, params: unknown) {
+      const id = `host-${nextRequestId++}`;
+      const result = new Promise<unknown>((resolve, reject) => {
+        pending.set(id, (response) => {
+          if ("error" in response && response.error) {
+            reject(new Error(response.error.message));
+            return;
+          }
+          resolve((response as { result?: unknown }).result);
+        });
+      });
+      hostToWorker.write(serializeMessage(createRequest(method, params, id)));
+      return result;
+    }
+
+    hostReadline.on("line", (line) => {
+      const message = parseMessage(line);
+      if (!isJsonRpcResponse(message)) return;
+      pending.get(String(message.id))?.(message);
+      pending.delete(String(message.id));
+    });
+
+    try {
+      await expect(callWorker("initialize", {
+        manifest: {
+          id: "paperclip.test-worker-context",
+          apiVersion: 1,
+          version: "1.0.0",
+          displayName: "Worker Context Test",
+          description: "Test plugin",
+          author: "Paperclip",
+          categories: ["automation"],
+          capabilities: [],
+          entrypoints: {},
+        },
+        config: {},
+        databaseNamespace: null,
+      })).resolves.toMatchObject({ ok: true });
+
+      await expect(callWorker("performAction", {
+        key: "inspect",
+        params: { companyId: "spoofed-company" },
+      })).resolves.toEqual({
+        paramsCompanyId: "spoofed-company",
+        actor: {
+          type: "system",
+          userId: null,
+          agentId: null,
+          runId: null,
+          companyId: null,
+        },
+        companyId: null,
+      });
+    } finally {
+      worker.stop();
+      hostReadline.close();
+      hostToWorker.destroy();
+      workerToHost.destroy();
+    }
+  });
+});
+
 describe("worker invocation scope propagation", () => {
   it("keeps overlapping company scopes local to each getData invocation", async () => {
     const hostToWorker = new PassThrough();