libre-mcp@0.12.1
VERIFIED· not startedPublisher claims: "Enables Claude and other MCP clients to query FreeStyle Libre sensor glucose read-only through LibreLinkUp, answering questions about current values, curves, time in range, typical days, lows and highs, and sensor lifespan. It keeps its own history of readings and all sensors worn, since LibreLinkUp only exposes the last 12 hours." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Not started: dependency install failed; the server itself was not observed.- Tested
- the dependency install step · every file read, file written and host contacted by what ran
- Not tested
- server startup · the tool list · tool behavior
What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.
Before you give it your token
- It will ask for
MYAUTH_APPMYAUTH_APP_KEYMYAUTH_PUBLIC_PORTMYAUTH_URLConfiguration, not credentials: FOOTER_NOTE, LIBRE_MCP_SESSION, LLU_VERSION, MCP_DB, POLL_INTERVAL_S- Where it talks to
- libreview.io, libreview.ru, libreview.com (its own)
- What the honeypot saw
- no credential files read · no network
- What we could not test
- server startup · the tool list · tool behavior
Connect it with a scoped credential, under the guard. It asks for MYAUTH_APP, MYAUTH_APP_KEY, MYAUTH_PUBLIC_PORT, MYAUTH_URL and talks to libreview.io, libreview.ru, libreview.com. Give the credential to the guard, not the server: the value never enters the server's environment and only travels to the host you bind. What the tools do with a real credential was not observed.
Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-13 and scored it 81/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 2 scenarios · 0 deviationsStatic findings
MCP server mskerwiderski/MCPServerFreeStyleLibre on Glama, built from https://github.com/mskerwiderski/MCPServerFreeStyleLibre.Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.In ChatGPT: **Settings → Apps & Connectors → Advanced → Developer mode**.Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.- A ChatGPT plan that offers developer mode: Plus, Pro, Business, Enterprise orFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.In ChatGPT: **Settings → Apps & Connectors → Advanced → Developer mode**.Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.instance are environment variables (`.env.example`, docs/hosted.md).Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose."Glukosewerte,Erstellt am,28-09-2026 08:00 UTC,Erstellt von,Max Muster\n"Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.env_file: ./.envFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.| [Install for ChatGPT](docs/install-chatgpt.md) | Hosted only: developer mode, custom connector, troubleshooting |Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.# The hosted server in a container. Settings come from .env (see .env.exampleFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.## 4. Turn on developer modeFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.## 4. Turn on developer modeFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.RUN useradd -u 1000 -m app && mkdir -p /data && chown app:app /dataFix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.| [Install for ChatGPT](docs/install-chatgpt.md) | Hosted only: developer mode, custom connector, troubleshooting |Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.- A ChatGPT plan that offers developer mode: Plus, Pro, Business, Enterprise orFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.r = subprocess.run([str(SYNC), "--check", block, str(REPO / "libre_mcp")],Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.proc = subprocess.Popen([sys.executable, "-m", "libre_mcp.cli", "stdio"], env=env,Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.Cost to the agent
Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.