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ChatGPT medical codes mcp server medcode_list_systems

How to: ChatGPT medical codes mcp server medcode_list_systems

client:ChatGPT transport:streamable-http tool:medcode_list_systems

Add medical codes mcp server to ChatGPT

  1. 01

    Open Settings → Connectors → Advanced → Developer mode and merge this in. Keep any servers already there.

https://medical-codes.caseyjhand.com/mcp
  1. 02

    Save the file and restart ChatGPT.

  2. 03

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

  3. 04

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

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs

Set these first

medical codes mcp server will not start until these are set, so medcode_list_systems never becomes available.

  • MCP_LOG_LEVEL
  • MEDCODE_DB_PATH
  • MEDCODE_MAX_RESULTS

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.