Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Failure Lab

Reproduce MCP timeouts, cancellation races, transport loss, and invalid responses with repeatable tests and CI reports.

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 NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    experiments/jev/run.mjs, line 233 const res = await fetch("https://openrouter.ai/api/alpha/decisions", {

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    experiments/jev/run.mjs, line 233 const res = await fetch("https://openrouter.ai/api/alpha/decisions", {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 6 .env

  • SECRETS_ENV_READ Note

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

    experiments/jev/run.mjs, line 4 const key = process.env.OPENROUTER_API_KEY;

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

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach openrouter.ai. The description does not name that host. can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    experiments/jev/run.mjs, line 233

    const res = await fetch("https://openrouter.ai/api/alpha/decisions", {

    src/httpServer.ts, line 88

    if (!(await isLegacyRequest(request))) return modernHandler.fetch(request, requestOptions);

    src/httpServer.ts, line 91

    return legacySessions.fetch(request, () => response?.destroy());

    Show more

    src/httpServer.ts, line 93

    return legacyStatelessHandler.fetch(request, requestOptions);

    src/legacyHttpSessions.ts, line 58

    async fetch(

    src/malformedMessageHttp.ts, line 56

    const response = await handler.fetch(request, requestOptions);

    src/scenarioCommand.ts, line 280

    fetch: (input, init) => handler.fetch(new Request(input, init)),

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    experiments/jev/run.mjs, line 4

    const key = process.env.OPENROUTER_API_KEY;

    .gitignore, line 6

    .env

    experiments/jev/.gitignore, line 1

    .env

  • 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

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 8c8772e4cf50. can reach openrouter.ai. The description does not name that host. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 8c8772e4cf5077804d05a1802e0f07bd42460de2

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