diff --git a/README.md b/README.md
index 19c7278..c4d4e13 100644
--- a/README.md
+++ b/README.md
@@ -151,6 +151,7 @@ Web search queries the `mixedbread/web` store in addition to your local store, m
 | --- | --- |
 | `mgrep` / `mgrep search <pattern> [path]` | Natural-language search with many `grep`-style flags (`-i`, `-r`, `-m`...). |
 | `mgrep watch` | Index current repo and keep the Mixedbread store in sync via file watchers. |
+| `mgrep list` | List active mgrep watch processes with their working directories. |
 | `mgrep login` & `mgrep logout` | Manage device-based authentication with Mixedbread. |
 | `mgrep install-claude-code` | Authenticate, add the Mixedbread mgrep plugin to Claude Code. |
 | `mgrep install-opencode` | Authenticate and add the Mixedbread mgrep to OpenCode. |
@@ -208,6 +209,19 @@ mgrep watch --max-file-size 1048576  # limit uploads to files under 1MB
 mgrep watch --max-file-count 5000  # limit uploads to directories with 5000 files or fewer
 ```
 
+### mgrep list
+
+`mgrep list` shows all running `mgrep watch` processes with their working directories.
+
+**Example:**
+```bash
+mgrep list
+# /home/user/project-a
+# /home/user/project-b
+```
+
+Output is one directory per line.
+
 ## Mixedbread under the hood
 
 - Every file is pushed into a Mixedbread Store using the same SDK your apps get.
diff --git a/package.json b/package.json
index 9a94855..837c62b 100644
--- a/package.json
+++ b/package.json
@@ -53,6 +53,8 @@
     "istextorbinary": "^9.5.0",
     "open": "^10.2.0",
     "ora": "^5.4.1",
+    "pid-cwd": "^1.2.0",
+    "ps-list": "^9.0.0",
     "p-limit": "^3.1.0",
     "winston": "^3.18.3",
     "winston-daily-rotate-file": "^5.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 337c240..262dd08 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -47,6 +47,12 @@ importers:
       p-limit:
         specifier: ^3.1.0
         version: 3.1.0
+      pid-cwd:
+        specifier: ^1.2.0
+        version: 1.2.0
+      ps-list:
+        specifier: ^9.0.0
+        version: 9.0.0
       winston:
         specifier: ^3.18.3
         version: 3.18.3
@@ -796,6 +802,9 @@ packages:
   picocolors@1.1.1:
     resolution: {integrity: sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==}
 
+  pid-cwd@1.2.0:
+    resolution: {integrity: sha512-8QQzIdBmy4bd2l1NKWON1X8flO5TQQRzU2uRDua/XaxSC0iJ+rgbDrlX76t0W3DaJ7OevTYpftyvQ6oMe3hclQ==}
+
   pkce-challenge@5.0.1:
     resolution: {integrity: sha512-wQ0b/W4Fr01qtpHlqSqspcj3EhBvimsdh0KlHhH8HRZnMsEa0ea2fTULOXOS9ccQr3om+GcGRk4e+isrZWV8qQ==}
     engines: {node: '>=16.20.0'}
@@ -804,6 +813,10 @@ packages:
     resolution: {integrity: sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg==}
     engines: {node: '>= 0.10'}
 
+  ps-list@9.0.0:
+    resolution: {integrity: sha512-lxMEoIL/BQlk2KunFzxwUPwMvjFH7x7cmvzSLsSHpyMXl9FFfLUlfKrYwFc4wx/ZaIxxuXC4n8rjQ1CX/tkXVQ==}
+    engines: {node: '>=20'}
+
   pvtsutils@1.3.6:
     resolution: {integrity: sha512-PLgQXQ6H2FWCaeRak8vvk1GW462lMxB5s3Jm673N82zI4vqtVUPuZdffdZbPDFRoU8kAhItWFtPCWiPpp4/EDg==}
 
@@ -1782,6 +1795,8 @@ snapshots:
 
   picocolors@1.1.1: {}
 
+  pid-cwd@1.2.0: {}
+
   pkce-challenge@5.0.1: {}
 
   proxy-addr@2.0.7:
@@ -1789,6 +1804,8 @@ snapshots:
       forwarded: 0.2.0
       ipaddr.js: 1.9.1
 
+  ps-list@9.0.0: {}
+
   pvtsutils@1.3.6:
     dependencies:
       tslib: 2.8.1
diff --git a/src/commands/list.ts b/src/commands/list.ts
new file mode 100644
index 0000000..addb7e3
--- /dev/null
+++ b/src/commands/list.ts
@@ -0,0 +1,51 @@
+import { Command } from "commander";
+import pidCwd from "pid-cwd";
+import psList from "ps-list";
+
+interface WatcherInfo {
+  pid: number;
+  directory: string;
+}
+
+async function getWatchers(): Promise<WatcherInfo[]> {
+  const processes = await psList();
+  const watchers: WatcherInfo[] = [];
+
+  for (const proc of processes) {
+    const cmd = proc.cmd || "";
+    if (cmd.includes("mgrep watch")) {
+      const cwd = await pidCwd(proc.pid).catch(() => null);
+      if (cwd) {
+        watchers.push({ pid: proc.pid, directory: cwd });
+      }
+    }
+  }
+
+  return watchers;
+}
+
+export async function listAction(): Promise<void> {
+  if (process.platform === "win32") {
+    console.error("mgrep list is not supported on Windows.");
+    process.exitCode = 1;
+    return;
+  }
+
+  const watchers = await getWatchers();
+
+  if (watchers.length === 0) {
+    console.error("No active mgrep watch processes found.");
+    process.exitCode = 0;
+    return;
+  }
+
+  for (const w of watchers) {
+    console.log(w.directory);
+  }
+}
+
+export const list = new Command("list")
+  .description("List active mgrep watch processes")
+  .action(async () => {
+    await listAction();
+  });
diff --git a/src/index.ts b/src/index.ts
index 9eafb04..fc6472c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,6 +3,7 @@ import * as fs from "node:fs";
 import * as path from "node:path";
 import { fileURLToPath } from "node:url";
 import { program } from "commander";
+import { list } from "./commands/list.js";
 import { login } from "./commands/login.js";
 import { logout } from "./commands/logout.js";
 import { search } from "./commands/search.js";
@@ -39,6 +40,7 @@ program
 
 program.addCommand(search, { isDefault: true });
 program.addCommand(watch);
+program.addCommand(list);
 program.addCommand(installClaudeCode);
 program.addCommand(uninstallClaudeCode);
 program.addCommand(installCodex);