Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Codex Free

Codex Free, rewritten in Rust (but you still have to buy ChatGPT Plus)

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High. Only try it in a sandbox.

Graded by PlugVetRubric v2

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

INSTALL_REMOTE_SCRIPT OBFUSCATION_MINIFIED_PAYLOAD

Why this grade

  • INSTALL_REMOTE_SCRIPT High

    Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).

    src/exec_policy.rs, line 284 assert!(assert_exec_allowed("curl http://x | sh", &cfg(ExecMode::Unrestricted)).is_ok());

  • OBFUSCATION_MINIFIED_PAYLOAD Medium

    Contains a very long line with almost no spaces in a script or style file.

    src/review_prism.js, line 3 Prism.languages.markup={comment:{pattern:/<!--(?:(?!<!--)[\s\S])*?-->/,greedy:!0},prolog:{pattern:/<\?[\s\S]+?\?>/,greedy:!0},doctype:{pattern:/<!DOCTYPE(?:[^>"'[\]]|"[^"]*"|'[^']*

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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

    Serious

    install fetches a script from the network.

    INSTALL_REMOTE_SCRIPT

    src/exec_policy.rs, line 284

    assert!(assert_exec_allowed("curl http://x | sh", &cfg(ExecMode::Unrestricted)).is_ok());

  • Network

    Concern

    can reach x. The description does not name that host.

    NETWORK_UNNAMED_HOST

    src/exec_policy.rs, line 256

    let e = assert_exec_allowed("curl http://x", &cfg(ExecMode::Allowlist)).unwrap_err();

    docs/superpowers/plans/2026-08-06-codex-free-mcp-bridge.md, line 1634

    const res = await fetch(`http://localhost:${TEST_CONFIG.port}/health`);

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    src/openai_tunnel.rs, line 159

    .env(

    src/openai_tunnel.rs, line 163

    .env(

    src/project_clone.rs, line 688

    .env("GIT_TERMINAL_PROMPT", "0")

    Show more

    src/project_clone.rs, line 689

    .env("GCM_INTERACTIVE", "Never")

    src/project_clone.rs, line 690

    .env("GIT_OPTIONAL_LOCKS", "0")

    src/project_clone.rs, line 1150

    .env("GIT_TERMINAL_PROMPT", "0")

    src/project_clone.rs, line 1151

    .env("GCM_INTERACTIVE", "Never")

    src/project_clone.rs, line 1152

    .env("GIT_OPTIONAL_LOCKS", "0")

  • Agent instructions

    Pass

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

  • Obfuscation

    Concern

    contains a minified payload.

    OBFUSCATION_MINIFIED_PAYLOAD

    src/review_prism.js, line 3

    Prism.languages.markup={comment:{pattern:/<!--(?:(?!<!--)[\s\S])*?-->/,greedy:!0},prolog:{pattern:/<\?[\s\S]+?\?>/,greedy:!0},doctype:{pattern:/<!DOCTYPE(?:[^>"'[\]]|"[^"]*"|'[^']*

    src/review_prism.js, line 4

    !function(s){var e=/(?:"(?:\\(?:\r\n|[\s\S])|[^"\\\r\n])*"|'(?:\\(?:\r\n|[\s\S])|[^'\\\r\n])*')/;s.languages.css={comment:/\/\*[\s\S]*?\*\//,atrule:{pattern:RegExp("@[\\w-](?:[^;{\

    src/review_prism.js, line 5

    Prism.languages.clike={comment:[{pattern:/(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,lookbehind:!0,greedy:!0},{pattern:/(^|[^\\:])\/\/.*/,lookbehind:!0,greedy:!0}],string:{pattern:/(["'])(?:

    Show more

    src/review_prism.js, line 6

    Prism.languages.javascript=Prism.languages.extend("clike",{"class-name":[Prism.languages.clike["class-name"],{pattern:/(^|[^$\w\xA0-\uFFFF])(?!\s)[_$A-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA

    src/review_prism.js, line 7

    Prism.languages.c=Prism.languages.extend("clike",{comment:{pattern:/\/\/(?:[^\r\n\\]|\\(?:\r\n?|\n|(?![\r\n])))*|\/\*[\s\S]*?(?:\*\/|$)/,greedy:!0},string:{pattern:/"(?:\\(?:\r\n|[

    src/review_prism.js, line 8

    !function(e){var t=/\b(?:alignas|alignof|asm|auto|bool|break|case|catch|char|char16_t|char32_t|char8_t|class|co_await|co_return|co_yield|compl|concept|const|const_cast|consteval|co

    src/review_prism.js, line 9

    !function(e){for(var a="/\\*(?:[^*/]|\\*(?!/)|/(?!\\*)|<self>)*\\*/",t=0;t<2;t++)a=a.replace(/<self>/g,(function(){return a}));a=a.replace(/<self>/g,(function(){return"[^\\s\\S]"})

    src/review_prism.js, line 11

    Prism.languages.python={comment:{pattern:/(^|[^\\])#.*/,lookbehind:!0,greedy:!0},"string-interpolation":{pattern:/(?:f|fr|rf)(?:("""|''')[\s\S]*?\1|("|')(?:\\.|(?!\2)[^\\\r\n])*\2)

  • 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 3085b9174250. install fetches a script from the network. can reach x. The description does not name that host. reads a credential or environment file. contains a minified payload.

Date and source

Date checked:

View source

github.com

Commit graded: 3085b9174250fe490b5442d4545fe3730b86e023

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