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Zed Ultimaps list_maps

How to: Zed Ultimaps list_maps

client:Zed transport:streamable-http tool:list_maps

Add Ultimaps to Zed

  1. 01

    Open ~/.config/zed/settings.json and merge this in. Keep any servers already there.

{
  "context_servers": {
    "mcp": {
      "url": "https://api.ultimaps.com/mcp"
    }
  }
}
  1. 02

    Save the file and restart Zed.

  2. 03

    Ask for something list_maps does. Zed lists the server's tools on connect and calls list_maps itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Ultimaps's identifier in your config matches the one above exactly.

Merge this into your existing settings object — do not replace the file. Zed docs

Set these first

Ultimaps will not start until these are set, so list_maps never becomes available.

  • ULTIMAPS_API_KEY

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.