0n3
MCP servers · Overpass (OpenStreetMap query) · connector

Connect Claude (desktop & claude.ai) to Overpass (OpenStreetMap query)

One line gives Claude (desktop & claude.ai) your Overpass (OpenStreetMap query) account as tools: 2 endpoints, query, more, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude (desktop & claude.ai)'s access alone any time.

Get the line for Claude (desktop & claude.ai)Connect Overpass (OpenStreetMap query) first

Three steps

  1. Create a free 0n3 account and connect Overpass (OpenStreetMap query). Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude (desktop & claude.ai). The Claude app or claude.ai. Add 0n3 in Settings and sign in once.
  3. Ask Claude (desktop & claude.ai): whoami. Then: "Query in Overpass (OpenStreetMap query)".
Claude desktop app and claude.ai
  1. In Claude, open Settings. Click Connectors. Click Add custom connector.
  2. For the name, type 0n3. For the URL, type https://0n3.app/mcp
  3. Click Connect. Sign in with your 0n3 email and password.
  4. Start a new chat. Turn on 0n3 in the tools menu. Type: "whoami"

You don't need to paste a key. You can turn this off any time in 0n3 under Tokens.

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude (desktop & claude.ai) and fills it in.

What Claude (desktop & claude.ai) can then do in Overpass (OpenStreetMap query)

Query · Run one Overpass QL query (start it with [out:json][timeout:25];), or read the server's load1
QueryPOST /interpreter
More · Everything else this app exposes.1
StatusGET /status

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