Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.cameronrye/activitypub-mcp

io.github.cameronrye/activitypub-mcp, an MCP server listed in the PlugVet directory.

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.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV INSTALL_DOCUMENTED_INSTALLER SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    src/mcp/tools.ts, line 281 .describe("Number of posts to fetch (default: 20)"),

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    scripts/setup.ps1, line 104 if (-not (Test-Path ".env")) {

  • INSTALL_DOCUMENTED_INSTALLER Note

    Documentation shows an installer that pipes a download into a shell.

    public/llms-full.txt, line 109 curl -fsSL https://raw.githubusercontent.com/cameronrye/activitypub-mcp/main/scripts/install.sh | bash

  • SECRETS_ENV_READ Note

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

    src/config.ts, line 284 export const HTTP_SECRET = process.env.MCP_HTTP_SECRET || "";

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    package-lock.json, line 1 {

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

    Note

    The docs document an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    public/llms-full.txt, line 109

    curl -fsSL https://raw.githubusercontent.com/cameronrye/activitypub-mcp/main/scripts/install.sh | bash

    site/src/content/docs/getting-started/cross-platform.mdx, line 179

    curl -fsSL https://rpm.nodesource.com/setup_20.x | sudo bash -

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    src/mcp/tools.ts, line 281

    .describe("Number of posts to fetch (default: 20)"),

    src/mcp/tools.ts, line 684

    .describe("How many levels of nested replies to fetch (default: 2)"),

    src/mcp/tools.ts, line 690

    .describe("Maximum number of replies to fetch (default: 50)"),

    Show more

    src/mcp/tools.ts, line 812

    .describe("Number of hashtags to fetch (default: 20)"),

    src/mcp/tools.ts, line 893

    .describe("Number of posts to fetch (default: 20)"),

    src/mcp/tools.ts, line 969

    .describe("Number of posts to fetch (default: 20)"),

    src/utils/fetch-helpers.ts, line 84

    const response = await fetch(currentUrl, {

    docker-compose.yml, line 40

    - "fetch('http://127.0.0.1:8080/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"

    docs/launch-kit.md, line 51

    > go through an SSRF-guarded fetch (allow-list + IP pinning + redirect re-validation),

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scripts/check-version.js, line 49

    /SERVER_VERSION\s*=\s*process\.env\.MCP_SERVER_VERSION\s*\|\|\s*["']([^"']+)["']/,

    scripts/setup.ps1, line 104

    if (-not (Test-Path ".env")) {

    src/config.ts, line 284

    export const HTTP_SECRET = process.env.MCP_HTTP_SECRET || "";

    Show more

    scripts/setup.ps1, line 105

    Copy-Item ".env.example" ".env"

    scripts/setup.ps1, line 106

    Write-Info "Created .env file from template"

    scripts/setup.ps1, line 107

    Write-Warn "Please edit .env file with your configuration"

    scripts/setup.ps1, line 109

    Write-Info ".env file already exists"

    scripts/setup.ps1, line 111

    # Check if .env.example is newer

    scripts/setup.ps1, line 112

    $envExample = Get-Item ".env.example" -ErrorAction SilentlyContinue

    src/config.ts, line 323

    export const INSTANCES_SOCIAL_TOKEN = process.env.INSTANCES_SOCIAL_TOKEN || "";

    src/auth/account-manager.ts, line 64

    const defaultToken = process.env.ACTIVITYPUB_DEFAULT_TOKEN;

    src/transport/http.ts, line 159

    const secret = process.env.MCP_HTTP_SECRET || HTTP_SECRET;

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    package-lock.json, line 1

    {

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 9cfa90617e5c. The docs document an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 9cfa90617e5cf3c53572ac2e7d26ca2d5a3587f6

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