From 06209553816decf381ff55e060ba1c1842d8e96d Mon Sep 17 00:00:00 2001
From: lakshya-dhariwal <lakshyadhariwal9@gmail.com>
Date: Sun, 27 Sep 2026 19:13:27 +0530
Subject: [PATCH 1/2] fix(copilot): map task and web_search to canonical
 Task/WebSearch (#690)

---
 __tests__/hooks/copilot-canonicalize.test.ts | 10 ++++++++++
 src/hooks/types.ts                           |  7 +++++++
 2 files changed, 17 insertions(+)

diff --git a/__tests__/hooks/copilot-canonicalize.test.ts b/__tests__/hooks/copilot-canonicalize.test.ts
index 16293d5af..98a88e488 100644
--- a/__tests__/hooks/copilot-canonicalize.test.ts
+++ b/__tests__/hooks/copilot-canonicalize.test.ts
@@ -66,3 +66,13 @@ describe("Copilot tool-input canonicalization (verified 1.0.71 captures)", () =>
     expect(Object.keys(COPILOT_TOOL_INPUT_MAP).sort()).toEqual(["Edit", "Read", "Write"]);
   });
 });
+
+describe("Copilot tool-name canonicalization", () => {
+  it("maps `task` to Task so sub-agent policies fire on Copilot sessions", () => {
+    expect(canonicalizeToolName("task", "copilot")).toBe("Task");
+  });
+
+  it("maps `web_search` to WebSearch", () => {
+    expect(canonicalizeToolName("web_search", "copilot")).toBe("WebSearch");
+  });
+});
diff --git a/src/hooks/types.ts b/src/hooks/types.ts
index e207f1b96..6f76bb5f1 100644
--- a/src/hooks/types.ts
+++ b/src/hooks/types.ts
@@ -275,6 +275,13 @@ export const COPILOT_TOOL_MAP: Record<string, string> = {
   rg: "Grep",
   ls: "LS",
   web_fetch: "WebFetch",
+  // Copilot's sub-agent and web-search tools (documented). Without these a
+  // policy matching `Task` or `WebSearch` silently never fires on Copilot -
+  // the names pass through uncanonicalised, same failure mode the rest of
+  // this map exists to prevent. `ask_user` is deliberately unmapped: it has
+  // no filesystem or shell reach, so no builtin policy targets it.
+  task: "Task",
+  web_search: "WebSearch",
 };
 
 /**

From 1ef98d76d987a9bec8ae9456489e07726bb406bb Mon Sep 17 00:00:00 2001
From: lakshya-dhariwal <lakshyadhariwal9@gmail.com>
Date: Sun, 27 Sep 2026 19:24:21 +0530
Subject: [PATCH 2/2] fix(hooks): canonicalize Copilot PascalCase 'Agent' tool
 name to Task

PascalCase PreToolUse payloads report tool_name as the Claude tool name,
and GitHub's hooks reference maps the runtime task tool to Agent there -
so a Task policy still skipped Copilot's task calls under the shape this
integration actually registers.
---
 __tests__/hooks/copilot-canonicalize.test.ts | 4 ++++
 src/hooks/types.ts                           | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/__tests__/hooks/copilot-canonicalize.test.ts b/__tests__/hooks/copilot-canonicalize.test.ts
index 98a88e488..77411ec56 100644
--- a/__tests__/hooks/copilot-canonicalize.test.ts
+++ b/__tests__/hooks/copilot-canonicalize.test.ts
@@ -72,6 +72,10 @@ describe("Copilot tool-name canonicalization", () => {
     expect(canonicalizeToolName("task", "copilot")).toBe("Task");
   });
 
+  it("maps `Agent` to Task - the PascalCase PreToolUse payload reports the Claude name", () => {
+    expect(canonicalizeToolName("Agent", "copilot")).toBe("Task");
+  });
+
   it("maps `web_search` to WebSearch", () => {
     expect(canonicalizeToolName("web_search", "copilot")).toBe("WebSearch");
   });
diff --git a/src/hooks/types.ts b/src/hooks/types.ts
index 6f76bb5f1..a29a5b1c0 100644
--- a/src/hooks/types.ts
+++ b/src/hooks/types.ts
@@ -281,6 +281,13 @@ export const COPILOT_TOOL_MAP: Record<string, string> = {
   // this map exists to prevent. `ask_user` is deliberately unmapped: it has
   // no filesystem or shell reach, so no builtin policy targets it.
   task: "Task",
+  // PascalCase `PreToolUse` payloads (the shape failproofai registers) report
+  // `tool_name` as the Claude tool name, and the docs table maps the runtime
+  // `task` tool to `Agent` there. Without this entry a Task policy still
+  // never fires on Copilot's PascalCase payload - the more common of the two
+  // shapes for this integration.
+  // Ref: https://docs.github.com/en/copilot/reference/hooks-reference
+  Agent: "Task",
   web_search: "WebSearch",
 };