python-umcp-calibre (rcarmo/python-umcp-calibre) is an MCP server listed on the M8ven Trust Index. It scores 60 out of 100, grade C. No publisher has claimed this listing.

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C
Caution
60/100

python-umcp-calibre

Read-only MCP server that runs inside Calibre as a plugin, exposing the live Calibre library for inspection, search, metadata, and duplicate detection via Streamable HTTP.

→ rcarmo/python-umcp-calibre· listed on glama

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

⚡ Live Monitored: not connected

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Who stands behind it

rcarmo

Source: Glama

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 1 credential: CALIBRE_UMCP_BRIDGE_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configCALIBRE_UMCP_DRY_RUN
configCALIBRE_OVERRIDE_DATABASE_PATH
configCALIBRE_UMCP_BRIDGE_URLThe released plugin endpoint is /mcp. belongs to the compatibility client and expects the older /rpc endpoint.
🔐 secretCALIBRE_UMCP_BRIDGE_TOKENCALIBRE_UMCP_BRIDGE_TOKEN, when set, matches the saved UI token
configCALIBRE_LIBRARY
configCALIBRE_LIBRARIES
configCALIBRE_DEFAULT_LIBRARY
configCALIBRE_BIN
// quality suggestions

Tools detected

No tools extracted — insufficient content to verify at Tier 2

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 0 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
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commit: 84807c020cb7013fca52d5a402fe0c31f822b889
code hash: 0e9a1fbaadd71b9855ce3e4ddf8736e331ed7d94fed97db665e6f64c47cc039c
view raw JSON →
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