LMCP — Setup & Troubleshooting

Adding a custom connector needs Developer mode, available on ChatGPT Plus, Pro, Business, Enterprise, and Edu (not the free plan). ChatGPT flags it high-risk because a custom connector can act on your data.

1. 1

   Install LMCP on your Mac

   Download LMCP from local-mcp.com and run the installer — it installs Local MCP to Applications and auto-configures your AI clients in ~30 seconds.

2. 2

   Turn on web access and copy your Connection URL

   Click the LMCP icon in your menu bar and find Your web AI · Cloud Relay. Turn web access ON (it is off by default for privacy), then open your assistant’s panel and click Copy URL.
   That URL already contains your personal token — it looks like https://www.local-mcp.com/mcp?token=…. Every step below that says “the URL you copied” means this one. Treat it like a password: anyone holding it can reach your Mac, and you can rotate it any time from the LMCP menu, which invalidates the old one.

3. 3

   Turn on Developer mode (one-time)

   Use a desktop browser at chatgpt.com — connectors can’t be added from the mobile or desktop apps. Open Settings → “Security and login” and turn on Developer mode: it’s the one-time prerequisite, and the custom-connector section (labeled “Connectors”, “Apps” or “Apps & Connectors” depending on rollout) only appears after it’s on — that’s why there may be no “Apps” yet.
   Still don’t see it? Fully reload chatgpt.com after toggling — Developer mode also has to stay on to use the connector. On Business/Enterprise/Edu a workspace admin must enable connectors first.

4. 4

   Create the LMCP connector

   With Developer mode on, go to chatgpt.com/plugins and click the ＋ at the top right — that is where the button lives, not on the Settings page (Settings → Plugins → “Browse plugins” takes you to the same screen). Fill in Name: LMCP and, in Server URL, paste the URL you copied from the LMCP menu bar — the tokenized one, exactly as copied. Authentication stays on “OAuth” — that is already the default, and the client ID/secret stay empty because we auto-register. Tick I understand and want to continue and click Create.

   
5. 5

   Sign in and approve on your Mac

   Create only registers the connector — it still reads “No app actions available yet”. Click Sign in with LMCP: ChatGPT opens an Authorize page on www.local-mcp.com, and a dialog appears on your Mac. Click Approve there and the tool catalog loads.
   If no dialog shows up, or the page says LMCP isn’t running, the approval simply expired — it only lasts 5 minutes. Click the button again; nothing needs reinstalling. (Pasting your token is the fallback for a different device or a browser that blocks the app-open.)

   
6. 6

   Enable it in a chat

   Start a new conversation and enable the LMCP connector from the composer’s tools menu (+). Then ask: “List my email accounts” or “What meetings do I have today?”

   

Steps verified 2026-08-08. 100% local · you confirm anything it sends · free.

1. 1

   Install LMCP on your Mac

   Download LMCP from local-mcp.com and run the installer — it installs Local MCP to Applications and auto-configures your AI clients in ~30 seconds.

2. 2

   Turn on web access and copy your Connection URL

   Click the LMCP icon in your menu bar and find Your web AI · Cloud Relay. Turn web access ON (it is off by default for privacy), then open your assistant’s panel and click Copy URL.
   That URL already contains your personal token — it looks like https://www.local-mcp.com/mcp?token=…. Every step below that says “the URL you copied” means this one. Treat it like a password: anyone holding it can reach your Mac, and you can rotate it any time from the LMCP menu, which invalidates the old one.

3. 3

   Open Claude’s connector settings

   Open Settings → Customize → Connectors (connectors moved here from the old Settings page), or go straight to claude.ai/settings/connectors. On Team/Enterprise an owner has to add it first from Organization settings → Connectors.

4. 4

   Add a custom connector

   Click Add → Add custom connector. Set Name: LMCP and Remote MCP server URL: paste the tokenized URL you copied (https://www.local-mcp.com/mcp?token=…). Click Add.

5. 5

   Connect it — this is the step people miss

   Add only registers the connector. It now reads “You’re not connected to LMCP yet” — click Connect, then Approve in the dialog that opens on your Mac. Claude only loads the tools after this.

6. 6

   Enable it in a chat

   Start a new conversation, enable the LMCP connector, and ask: “List my email accounts” or “What’s on my calendar today?” With Cloud Data Forwarding ON you’ll see 188+ tools.

Steps verified 2026-08-08. 100% local · you confirm anything it sends · free.

Works with any client that speaks the Model Context Protocol — Claude Desktop, Cursor, Windsurf, VS Code, Zed, Cline, Raycast, and more.

1. 1

   Install LMCP

   Download from local-mcp.com. The installer auto-configures the clients it detects (Claude Desktop, Cursor, Windsurf, VS Code, Zed, Claude Code).

2. 2

   Add the server to any other MCP client

   In your client’s MCP config, add a stdio server with command npx and args local-mcp:
   { "mcpServers": { "local-mcp": { "command": "npx", "args": ["local-mcp"] } } }

3. 3

   Restart the client

   Restart your MCP client and the LMCP tools appear. No API keys, no cloud — everything runs locally on your Mac.

Steps verified 2026-07-14. 100% local · you confirm anything it sends · free.