KeepMD MCP for EOB Decoder

KeepMD MCP for EOB Decoder

A read-only Model Context Protocol server that helps an AI assistant read a medical Explanation of Benefits (EOB), Medicare Summary Notice or itemized bill. It is the same job the KeepMD EOB Decoder browser extensions do, exposed to Claude, ChatGPT, Cursor and any other MCP client.

Endpoint: https://mcp.keepmd.org/eob (Streamable HTTP, no authentication) Documentation: https://keepmd.org/mcp-eob-decoder/ Publisher: KeepMD (VertexMD, Inc.) · support@keepmd.org

In plain English: you paste or describe an EOB or bill to Claude, ChatGPT or another assistant, and the assistant uses this server to say what each code means, what the insurance words mean, whether the amounts add up, and what to do next. The server only ever sees codes, words and dollar figures.

What it does

Plus the decode_eob prompt and two resources (keepmd://mcp-eob-decoder/glossary, keepmd://mcp-eob-decoder/manifest).

Every tool carries readOnlyHint: true and openWorldHint: false. Every clinical or financial payload carries a disclaimer field: general billing and coding reference, not medical, legal or financial advice.

Privacy

The server has no storage and no accounts. Tools accept codes, terms and dollar amounts only; no schema takes a name, date of birth, member ID, claim number or statement text. Tool arguments are never logged. Full policy: https://keepmd.org/privacy/mcp-eob-decoder/.

Data

CPT (AMA), CDT (ADA) and CARC/RARC (X12) descriptors are licensed and are not included. See NOTICE.md. Exact versions and file hashes: public/data/MANIFEST.json.

Use it

Claude (claude.ai → Settings → Connectors → Add custom connector): https://mcp.keepmd.org/eob Claude Code: claude mcp add --transport http keepmd-mcp-eob-decoder https://mcp.keepmd.org/eob Cursor / VS Code / other clients:

{ "mcpServers": { "keepmd-mcp-eob-decoder": { "type": "http", "url": "https://mcp.keepmd.org/eob" } } }

ChatGPT: install from the app directory once listed (see chatgpt/). Gemini CLI: gemini extensions install https://github.com/keepmd-medical/keepmd-mcp-eob-decoder

Try: *"What do Z00.00, 99213 and J0696 mean on this EOB?"* · *"Explain allowed amount versus billed amount."* · *"Billed 1,200, allowed 650, deductible 500, 20% coinsurance. Is my 630 patient responsibility right?"*

Run it yourself

npm install --legacy-peer-deps

npm run data:refresh # downloads the CMS/NCHS releases and rebuilds public/data npm test && npm run typecheck npm run dev # http://localhost:8787/eob

Test it

npm run dev                                   # terminal 1

npm run smoke -- http://127.0.0.1:8787/eob # terminal 2: initialize, tools/list, one call per tool, the prompt npx @modelcontextprotocol/inspector # point it at http://127.0.0.1:8787/eob (Streamable HTTP)

Or add the local server to Claude Code with claude mcp add --transport http eob-local http://127.0.0.1:8787/eob and ask it the reviewer prompts in docs/SUBMISSIONS.md. Problems: support@keepmd.org (the issue tracker is off).

Built on @modelcontextprotocol/server (createMcpHandler, stateless Streamable HTTP) and Cloudflare Workers with Static Assets for the code sets. Layout, release and data-refresh steps: CONTRIBUTING.md, docs/DEPLOY.md. Directory submissions (Anthropic, OpenAI, MCP Registry, Google, Meta, Grok, Cursor and others): docs/SUBMISSIONS.md. Bundles: plugin/ (Claude plugin), chatgpt/ (ChatGPT app package), .cursor-plugin/ + mcp.json (Cursor plugin), gemini-extension.json + GEMINI.md (Gemini CLI extension).

About KeepMD

This server comes from KeepMD, a family medical records app for tracking medical records, labs and health documents for everyone you look after. The server is a separate reference service: it stores nothing and never connects to anyone's records.

• Secure medical records app
• How to organize family health records
• KeepMD on the App Store
• KeepMD on Google Play

License

MIT for code and KeepMD-authored content. Government data sources are public domain; see NOTICE.md.