diff --git a/src/tools/ask-browserstack/register.ts b/src/tools/ask-browserstack/register.ts
index 380a4c4c..85f06389 100644
--- a/src/tools/ask-browserstack/register.ts
+++ b/src/tools/ask-browserstack/register.ts
@@ -551,7 +551,7 @@ export function addAskBrowserStackAITool(
       product: z
         .enum(PRODUCTS)
         .describe(
-          "Which product to work in: tm (Test Management), " +
+          "Which product to work in: tm (Test Management), a11y (Accessibility), " +
             "tra (Test Reporting & Analytics).",
         ),
       // OPTIONAL, because a resume does not carry one. `next_step` tells the model to
diff --git a/src/tools/ask-browserstack/types.ts b/src/tools/ask-browserstack/types.ts
index b490ae4d..b0b21850 100644
--- a/src/tools/ask-browserstack/types.ts
+++ b/src/tools/ask-browserstack/types.ts
@@ -7,11 +7,10 @@
  * other half will never send. Nothing here changes without changing that document first.
  */
 
-// a11y is deliberately ABSENT while Ask AI is in limited alpha. Atlas itself serves the
-// product; this tool just does not offer it yet. Re-adding it means this list, the `product`
-// describe text in register.ts, and the two a11y handoffs in tool-handoff.ts — which stop
-// pointing here precisely because the call would now be rejected.
-export const PRODUCTS = ["tm", "tra"] as const;
+// Dropping a product means this list, the `product` describe text in register.ts, and any
+// handoff in tool-handoff.ts that sends the model here with that product — the two a11y ones
+// do — or those handoffs become instructions to make a call the schema rejects.
+export const PRODUCTS = ["tm", "a11y", "tra"] as const;
 export type Product = (typeof PRODUCTS)[number];
 
 /** CONTRACT §2 — what Atlas emits on the run's stream when its gate needs a human. */
diff --git a/src/tools/tool-handoff.ts b/src/tools/tool-handoff.ts
index ce41a2b3..53c5adff 100644
--- a/src/tools/tool-handoff.ts
+++ b/src/tools/tool-handoff.ts
@@ -91,13 +91,14 @@ export const NEEDS_SESSION_ID =
 /** A completed scan's ids come from startAccessibilityScan, or from the agent. */
 export const NEEDS_A11Y_SCAN_ID =
   " Requires the ids of a completed scan, which are returned by startAccessibilityScan. " +
-  "No tool here lists past scans, so if you do not have the ids, start a new scan rather " +
-  "than guessing.";
+  "No tool here lists past scans; for one run earlier, call askBrowserStackAI with product " +
+  '"a11y" to locate it, or start a new scan rather than guessing.';
 
 /** Auth-config ids are not listable by any tool here. */
 export const NEEDS_A11Y_CONFIG_ID =
   " Requires the numeric id returned by createAccessibilityAuthConfig. No tool here lists " +
-  "existing configurations, so if you do not have the id, create one rather than guessing.";
+  "existing configurations, so if you do not have the id, call askBrowserStackAI with " +
+  'product "a11y" to find it, or create one rather than guessing.';
 
 /** Test ids come from listTestIds, which itself needs a build id. */
 export const NEEDS_TEST_IDS = needsIdFrom("test ids", "listTestIds");
diff --git a/tests/tools/askBrowserstackE2E.test.ts b/tests/tools/askBrowserstackE2E.test.ts
index 19969038..9c49e44f 100644
--- a/tests/tools/askBrowserstackE2E.test.ts
+++ b/tests/tools/askBrowserstackE2E.test.ts
@@ -5,6 +5,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import { AskError } from "../../src/tools/ask-browserstack/config.js";
 import { resetTokenCache } from "../../src/tools/ask-browserstack/central-oauth.js";
 import { addAskBrowserStackAITool } from "../../src/tools/ask-browserstack/register.js";
+import { NEEDS_A11Y_CONFIG_ID, NEEDS_A11Y_SCAN_ID } from "../../src/tools/tool-handoff.js";
 
 // `apiClient` adapted onto the global `fetch` stub these tests already install.
 //
@@ -294,20 +295,25 @@ describe("askBrowserStackAI, end to end through the server factory", () => {
       expect(description).toMatch(/One task per call/);
     });
 
-    it("offers tm and tra only — a11y is not on the tool while it is in alpha", async () => {
-      // Atlas serves a11y; this TOOL does not offer it yet. Pinned because dropping a
-      // product is a one-word edit that four other places have to agree with, and the two
-      // a11y handoffs in tool-handoff.ts used to send the model here with product "a11y" —
-      // which the schema now rejects, so a silent re-add would strand them again.
+    it("offers tm, a11y and tra, and every handoff that names a product names one of them", async () => {
+      // Pinned because changing a product is a one-word edit that other places have to agree
+      // with: the `product` describe text, and the a11y handoffs in tool-handoff.ts, which
+      // send the model here with product "a11y". Drop a11y from the enum without moving those
+      // and they become instructions to make a call the schema rejects.
       const server = await buildServer();
       const shape = (server.getTools().askBrowserStackAI as any).inputSchema?.shape;
       const values = shape?.product?._def?.values ?? shape?.product?.options;
 
-      expect(values).toEqual(["tm", "tra"]);
-      expect(values).not.toContain("a11y");
+      expect(values).toEqual(["tm", "a11y", "tra"]);
 
-      const description = (server.getTools().askBrowserStackAI as any).description as string;
-      expect(description).not.toMatch(/a11y/);
+      const productText = shape?.product?.description as string;
+      for (const value of values) expect(productText).toContain(`${value} (`);
+
+      for (const handoff of [NEEDS_A11Y_SCAN_ID, NEEDS_A11Y_CONFIG_ID]) {
+        const named = handoff.match(/askBrowserStackAI with product "([^"]+)"/)?.[1];
+        expect(named).toBeDefined();
+        expect(values).toContain(named);
+      }
     });
 
     it("relays an ask, approves it, and forwards the caller's own credentials", async () => {