Local-first CGM MCP for AI agents: Dexcom Developer API + FreeStyle Libre via LibreLink Up.
Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"io-github-davidmosiah-wellness-cgm-mcp": {
"command": "<see-readme>",
"args": []
}
}
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Local-first CGM MCP for AI agents: Dexcom Developer API + FreeStyle Libre via LibreLink Up.
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🩸 Why this exists: Levels charges $199/mo to do exactly this — read your CGM, correlate with meals, flag spikes. wellness-cgm-mcp is the same game as a free local-first MCP. Stelo OTC + Dexcom developer API + your agent + wellness-nourish = the full metabolic loop.
⚡ One-command install — pick your runtime:
- Delx Wellness for Hermes:
npx -y delx-wellness-hermes setup- Delx Wellness for OpenClaw:
npx -y delx-wellness-openclaw setup
Local MCP server that exposes CGM data (and synthetic mock data when nothing is configured) to any MCP-aware agent. Two real backends are supported: Dexcom (Developer API, sandbox + production) and FreeStyle Libre (the OTC sensor — Libre 2 / Libre 3) via LibreLink Up. Pick the backend with CGM_PROVIDER; it auto-detects Libre when only Libre credentials are set. Both feed the same ADA time-in-range / GMI / hypo / meal-response engine.
npx -y wellness-cgm-mcp doctor # see env / mode
npx -y wellness-cgm-mcp status
# In Claude Desktop / Cursor / etc., add:
# {
# "mcpServers": {
# "wellness-cgm": {
# "command": "npx",
# "args": ["-y", "wellness-cgm-mcp"]
# }
# }
# }
The agent now has 10 CGM tools. Without a Dexcom token, every tool returns synthetic readings tagged mock: true — perfect for prototyping.
# 1. Sign up at https://developer.dexcom.com (sandbox is free)
# 2. Create an app, register your redirect URI
export DEXCOM_ENV=sandbox
export DEXCOM_CLIENT_ID=...
export DEXCOM_CLIENT_SECRET=...
export DEXCOM_REDIRECT_URI=https://your.callback/redirect
# 3. Get the OAuth URL, open it, grant access, copy the code from the redirect
npx -y wellness-cgm-mcp authorize
# 4. Swap code for tokens
npx -y wellness-cgm-mcp exchange <auth_code_from_redirect>
# 5. Set DEXCOM_ACCESS_TOKEN to the acces
... [View full README on GitHub](https://github.com/davidmosiah/wellness-cgm-mcp#readme)