matrix-mcp-server (mjknowles/matrix-mcp-server) is an MCP server listed on the M8ven Trust Index. It scores 58 out of 100, grade D. It declares 20 tools. No publisher has claimed this listing.

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D
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58/100

matrix-mcp-server

MCP Server for a Matrix home server integration; chat, manage rooms, etc.

→ mjknowles/matrix-mcp-server· listed on github_topic

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.

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Who stands behind it

mjknowles

Source: github_topic · also listed on Glama

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Install from

GitHubGlamanot 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
⚠️
Known vulnerabilities in dependencies: 3 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
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: MATRIX_CLIENT_SECRET
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies3 high1 medium

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.16.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.16.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.16.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

mediummatrix-js-sdk@37.4.0GHSA-mp7c-m3rh-r56v

matrix-js-sdk has insufficient validation when considering a room to be upgraded by another

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// 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.
configCORS_ALLOWED_ORIGINS"" # Comma-separated allowed origins (empty = allow all)
configENABLE_HTTPS
configENABLE_OAUTHtrue npm run dev
configENABLE_TOKEN_EXCHANGEtrue # Exchange OAuth tokens for Matrix tokens
configIDP_AUTHORIZATION_URL"https://keycloak.example.com/realms/matrix/protocol/openid-connect/auth"
configIDP_ISSUER_URL"https://keycloak.example.com/realms/matrix"
configIDP_REGISTRATION_URL
configIDP_REVOCATION_URL
configIDP_TOKEN_URL"https://keycloak.example.com/realms/matrix/protocol/openid-connect/token"
configMATRIX_CLIENT_ID"your-matrix-client-id"
🔐 secretMATRIX_CLIENT_SECRET"your-matrix-client-secret"
configMATRIX_HOMESERVER_URL"https://matrix.example.com"
configMCP_SERVER_URL
configOAUTH_CALLBACK_URL"http://localhost:3000/callback"
configOAUTH_SCOPES_SUPPORTED
configSSL_CERT_PATH"/path/to/certificate.crt"
configSSL_KEY_PATH"/path/to/private.key"
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

20/20 tools missing one or more hints — get-room-messages (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get-messages-by-date (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); identify-active-users (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +17 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tests exist

No test files found

Add tests that exercise each declared tool.

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.16.0 (high), @modelcontextprotocol/sdk@1.16.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Dependency freshness

1/8 production deps stale: node-fetch@2023-11-30 (2.5y)

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 4 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: 88719f4da7d3bd79fe35a56d204604628aad7cca
code hash: 35444038279d5db6337b9d5f3e8845b75daa3e283d2218d490f10a9beda47b0b
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