MCP servers · Overpass (OpenStreetMap query) · MCP server
Connect Codex CLI to Overpass (OpenStreetMap query)
One line gives Codex CLI 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 Codex CLI's access alone any time.
Three steps
- Create a free 0n3 account and connect Overpass (OpenStreetMap query). Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Codex CLI. OpenAI's helper in your Terminal. Paste two lines.
- Ask Codex CLI: whoami. Then: "Query in Overpass (OpenStreetMap query)".
First, paste this in Terminal and press Enter
export ON3_TOKEN="<your 0n token>"
This tells your computer your 0n3 key.
The line above carries a placeholder; 0n3.app/install mints a real key named for Codex CLI and fills it in.
What Codex CLI 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
Query
POST /interpreterMore · Everything else this app exposes.1
Status
GET /statusOverpass (OpenStreetMap query) in other AI clients
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