Meddata MCP server

MedData MCP Server

mcp-name: io.github.anthesiallc/meddata

A Model Context Protocol server that exposes the MedData API as tools, so any MCP client (Claude Desktop, Cursor, ChatGPT connectors, or an agent framework) can look up drug and supplement data and check interactions conversationally.

It's a thin wrapper: each tool maps to one MedData REST endpoint. All the data work happens in the API.

Tools

checkinteractions vs assessroutine

checkinteractions returns a flat list of interactions. assessroutine returns the reasoning: what each submitted name resolved to, what was consulted for every pair, and the document behind each finding. Reach for it when the answer will be explained or acted on rather than just displayed.

The distinction that matters most is in pairs_checked[].status:

notcovered and nofindinginsources are different answers, and a flat empty list cannot tell them apart.

assessroutine also takes classmatching (default off). With it on, a drug matches the therapeutic classes a supplement record names, not only the drug names it lists; those findings carry basis.level: "class" and name the class, so an inferred match stays distinguishable from an explicit one. Findings also carry basis.level (formulation / ingredient / class) saying how closely the source matches what was submitted, three-state timing and food conditions where silence is not_documented rather than "no effect", and references[] with the document version and the verbatim passage.

Get an API key

Free tier is 250 calls/month, no credit card:

curl -X POST https://meddata.anthesia.io/api/v1/signup \
  -H 'Content-Type: application/json' \
  -d '{"email":"you@example.com"}'

The key comes back in the api_key field of the response.

Install and run

The easiest way is with uv (no manual venv needed):

# stdio transport (default — for Claude Desktop, Cursor, most local clients)
MEDDATA_API_KEY=md_your_key uvx meddata-mcp

# streamable-HTTP transport (for remote / web clients)
MEDDATA_API_KEY=md_your_key uvx meddata-mcp --http

Or install with pip into its own environment:

pip install meddata-mcp
MEDDATA_API_KEY=md_your_key meddata-mcp

Note: install into a dedicated environment. The mcp SDK requires a newer

starlette than the MedData API app pins, so the two will conflict if installed

together.

Environment variables:

• MEDDATAAPIKEY (required) — your MedData API key.
• MEDDATABASEURL (optional) — defaults to https://meddata.anthesia.io.
• MEDDATA_TIMEOUT (optional) — request timeout in seconds, default 30.

Client configuration

Claude Desktop

Add to claudedesktopconfig.json (Settings → Developer → Edit Config):

Shortened. The full README is on GitHub.