[lib] detect Muse Code from environment

README.md

@@ -45,11 +45,14 @@ Officially supported coding agents:
 | [GitHub Copilot CLI](https://github.com/github/copilot-cli)       | `copilot`     | ✅         |
 | [Kilo Code](https://kilocode.ai/)                                 | `kilocode`    | ✅         |
 | [Kiro](https://kiro.dev/)                                         | `kiro`        | ✅         |
+| [Muse Code][muse-code]                                            | `muse`        | 🚫         |
 | [OpenCode](https://opencode.ai/)                                  | `opencode`    | 🚫         |
 | [Pi](https://github.com/badlogic/pi-mono)                         | `pi`          | 🚫         |
 | [Replit](https://replit.com/)                                      | `replit`      | ✅         |
 | [Rork](https://rork.com/)                                          | `rork`        | 🚫         |
 
+[muse-code]: https://developer.meta.com/ai/products/muse-code/
+
 Detection is data-driven: the exact environment variables and process
 patterns for each agent live in [`src/agents.ts`](src/agents.ts).
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agent-cli-detector",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "description": "Detect whether a JavaScript CLI is running inside a coding agent.",
   "type": "module",
   "sideEffects": false,

src/agents.ts

@@ -94,6 +94,11 @@ export const defaultAgents = [
     process: [{ pattern: /kiro/i }],
     sessionEnv: ["KIRO_SESSION_ID"]
   },
+  {
+    id: "muse",
+    name: "Muse Code",
+    env: [{ name: "MUSE_RELEASE_INFO" }]
+  },
   {
     id: "cline",
     name: "Cline",

src/types.ts

@@ -10,6 +10,7 @@ export type AgentId =
   | "kiro"
   | "kilocode"
   | "claude-code"
+  | "muse"
   | "opencode"
   | "pi"
   | "replit"

test/detector.test.mjs

@@ -78,6 +78,23 @@ test("detects rork from RORK_API_URL", () => {
   });
 });
 
+test("detects Muse Code from MUSE_RELEASE_INFO", () => {
+  const result = detectAgent({
+    env: {
+      MUSE_RELEASE_INFO: JSON.stringify({
+        channel: "muse-stable",
+        version: "0.1.0-R708.1"
+      })
+    }
+  });
+
+  assert.equal(result.detected, true);
+  assert.deepEqual(result.agent, {
+    id: "muse",
+    name: "Muse Code"
+  });
+});
+
 test("detects bolt from any known environment variable", () => {
   for (const envName of ["BOLT_ENV", "BOLT_ORIGIN", "BOLT_SERVER_URL"]) {
     const result = detectAgent({