These apps sign you in. Paste one address, approve in a browser tab, and there is nothing to copy.
In Claude.ai, Claude Desktop or a ChatGPT connector, add a custom connector and give it this address:
https://tabtunnel.dev/v1/mcpThere is no token to create. If the app offers a field for a key or a header, leave it empty.
The connection then appears in your dashboard's Tokens list, named after the app. Press Stop there to disconnect it; nothing else is affected.
| It asks for an API key | It did not find the sign-in page. Check you pasted exactly the address above, with nothing after /v1/mcp, and that the app supports remote MCP servers, not only ones on your computer. |
| No browsers listed | The connection is for a different organization from your browser. Check which organization is shown at the top of the dashboard, then stop the connection on Tokens and add it again, choosing that one. |
Your browser is offline |
Open Chrome and check the TabTunnel extension is signed in. connected and reachable both mean it is ready. |
| Chrome asks about a site | Answer it and the agent carries on. This happens the first time an agent visits a site, unless you chose Allow everything during setup. |
If the approval page says the app asked for access TabTunnel does not give, the app cannot be connected this way. Tell us which app it was.
Next: what it can do.
Is something here wrong, or missing? Tell us.