Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Matrix Mcp Server

A comprehensive Model Context Protocol (MCP) server that provides secure access to Matrix homeserver functionality.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    package.json, line 15 @modelcontextprotocol/sdk

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    src/auth/tokenExchange.ts, line 51 const resp = await fetch(tokenUrl, {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 28 .env

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/http-server.ts, line 42 const SSL_KEY_PATH = process.env.SSL_KEY_PATH;

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    package.json, line 15

    @modelcontextprotocol/sdk

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    src/auth/tokenExchange.ts, line 51

    const resp = await fetch(tokenUrl, {

    src/auth/verifyAccessToken.ts, line 40

    const resp = await fetch(userInfoUrl, {

    src/matrix/client.ts, line 74

    return fetch(input, { ...(init || {}), agent }) as any;

    Show more

    src/matrix/messageProcessor.ts, line 38

    const response = await fetch(httpUrl);

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/http-server.ts, line 42

    const SSL_KEY_PATH = process.env.SSL_KEY_PATH;

    src/http-server.ts, line 52

    const tokenUrlStr = process.env.IDP_TOKEN_URL || "";

    .gitignore, line 28

    .env

    Show more

    src/utils/server-helpers.ts, line 6

    export const ENABLE_TOKEN_EXCHANGE = process.env.ENABLE_TOKEN_EXCHANGE === "true";

    src/utils/server-helpers.ts, line 14

    clientSecret: process.env.MATRIX_CLIENT_SECRET || "",

    .gitignore, line 27

    # Environment variables

    .gitignore, line 30

    !.env.example

    CLAUDE.md, line 146

    A `.env` file is provided with sensible defaults. Copy and modify as needed for your environment.

    README.md, line 36

    cp .env.example .env

    README.md, line 37

    # Edit .env with your settings

    README.md, line 207

    Create a `.env` file with your configuration:

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Note

    the latest commit is more than 365 days old.

    MAINTAINER_STALE

    No file path was stored.

    2025-07-24T23:57:23-05:00

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Note

Hygiene check of commit 88719f4da7d3. dependencies are not pinned. can reach a host that is not written as a fixed address. reads a credential or environment file. the latest commit is more than 365 days old.

Date and source

Date checked:

View source

github.com

Commit graded: 88719f4da7d3bd79fe35a56d204604628aad7cca

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen