proton-mcp (purplehat93/proton-mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 34 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Emerging
74/100

proton-mcp

Enables MCP clients to interact with Proton Mail through a self-hosted server that works alongside Proton Mail Bridge. It provides read-only mailbox tools such as listing folders, searching mail, and retrieving messages while keeping Bridge isolated from the network.

→ purplehat93/proton-mcp· listed on glama

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code Verified⚡ Live Monitored: not connected

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Who stands behind it

purplehat93

Source: Glama

Is this your MCP?

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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
✅
34 tools verified — handlers match their declared behaviour
16 read-only tools verified — handlers contain no write/delete/exec
✅
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.
// 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.
configMCP_STATE_DIR
// quality suggestions

Tool test coverage

Only 0/34 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

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 1 concrete improvement we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/purplehat93/proton-mcp)](https://m8ven.ai/mcp/purplehat93/proton-mcp)
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commit: ee835f9d808d89115eb6d69d9cc1bd8ed9c6abdf
code hash: 89571f4183887b81b3b05b81ff105fa8aeac0e36837bc6d67bf0b9d7b4f1f28d
view raw JSON →
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