Grades are a hygiene check, not a security guarantee.

MCP, MCP server

runjs

This project contains an MCP server that can execute JavaScript safely in an isolated sandbox and return a result from the script.

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.

Rescanned at commit c79db7e38a5a, unchanged since the check below.

NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV 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.

    app/composables/useBackend.ts, line 54 const response = await fetch("/api/store-secret", {

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    app/composables/useBackend.ts, line 54 const response = await fetch("/api/store-secret", {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    cli/src/index.ts, line 10 // 👉 Copy the .env.sample file to .env and set your OPENAI_API_KEY

  • OBFUSCATION_FILE_OVER_READ_CAP Note

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

    app/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

    Pass

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

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach jsonplaceholder.typicode.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    app/composables/useBackend.ts, line 54

    const response = await fetch("/api/store-secret", {

    app/composables/useBackend.ts, line 84

    const response = await fetch("/api/run-prompt", {

    app/server/api/store-secret.ts, line 5

    const response = await fetch(import.meta.env.VITE_SECRETS_ENDPOINT, {

    Show more

    README.md, line 257

    const response = await fetch('https://jsonplaceholder.typicode.com/posts/', {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    cli/src/index.ts, line 10

    // 👉 Copy the .env.sample file to .env and set your OPENAI_API_KEY

    .gitignore, line 6

    # dotenv files

    .gitignore, line 488

    *.env

    Show more

    README.md, line 110

    .env # 👈 Make your own from the .env.sample

    README.md, line 111

    .env.sample # Sample .envfile; make a copy as .env

    README.md, line 144

    Once you've done this, you will need to create a copy of the `.env.sample` file and as `.env` and set your OpenAI API key and the URL:

    README.md, line 205

    # Make a copy of the .env.sample as .env

    README.md, line 219

    # Make a copy of the .env.sample as .env

  • 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

    app/package-lock.json, line 1

    {

  • 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.

    2025-06-23T23:14:24-04:00

Note

Hygiene check of commit c79db7e38a5a. can reach a host that is not written as a fixed address. can reach jsonplaceholder.typicode.com. The description does not name that host. reads a credential or environment file. a file was over the read cap and was not fully read. the latest commit is more than 365 days old.

Date and source

Date checked:

View source

github.com

Commit graded: c79db7e38a5a59cc2e4b3c9500fe3c210cfe62c2

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