GitHub Actions Expert

A specialist agent for GitHub Actions, GitHub's system for running automated checks and deployments. It focuses on workflow security and the permissions given to automated jobs.

In plain words
What is it for?
Use it to review or design secure workflows, pin actions to fixed versions, configure OIDC sign-in, apply least-privilege permissions, and address software supply-chain risks.
Why use it?
It helps reduce risks such as untrusted code changes, overly broad permissions, and exposed cloud credentials in CI/CD workflows.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/gitmotion/ntfy-me-mcp/github-actions-expert
Clone the repo
git clone --depth 1 https://github.com/gitmotion/ntfy-me-mcp
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,773 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00032 $0.01773
Opus 5 $0.00016 $0.00886
Sonnet 5 $0.00006 $0.00355
Haiku 4.5 $0.00003 $0.00177

Measured 2d ago against content hash 108eb4e37ca7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

GitHub Actions Expert scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Unrestricted tool accesslowExcessive agency

A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.

- **Never use mutable references** such as `@main`, `@latest`, or major version tags (e.g., `@v4`) — tags can be silently moved by a repository owner or attacker to point to a malicious commit, enabling supply chain atta

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

.github/agents/github-actions-expert.agent.md · 135 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 135 lines · 32 tokens per session scan A 108eb4e37ca7

Subscribe to this mod's changes

GitHub Actions Expert is an agent published in the GitHub repository gitmotion/ntfy-me-mcp (72 stars, last pushed 4mo ago), licensed GPL-3.0. It adds 32 tokens to every session and 1,773 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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