github-ci

github-ci is a skill for Claude Code, Codex from event4u-app/agent-config. It costs 43 tokens per session (1,158 once invoked), scanned A, original, MIT.

A guide to GitHub Actions, GitHub's built-in system for running automated checks and deployments from workflow files. It covers workflow YAML, test matrices, quality checks, deployment triggers, and reusable workflows.

In plain words
What is it for?
Use it to inspect or modify GitHub Actions workflows, investigate failing CI checks, configure test matrices and quality gates, and manage automated review, staging, or production deployments.
Why use it?
It helps explain and change CI—the automated process that checks code and can deploy it—without missing how the project's jobs, versions, and environments fit together.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument; mentions AGENTS.md.

Good fit Use it to inspect or modify GitHub Actions workflows, investigate failing CI checks, configure test matrices and quality gates, and manage automated review, staging, or production deployments.

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Install with agentmods
npx agentmods add skills/event4u-app/agent-config/github-ci
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.

Any agent
npx skills add event4u-app/agent-config --skill github-ci
Clone the repo
git clone --depth 1 https://github.com/event4u-app/agent-config

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for github-ci

README.md
[![agentmods](https://agentmods.dev/badge/skills/event4u-app/agent-config/github-ci/github.svg)](https://agentmods.dev/skills/event4u-app/agent-config/github-ci)
Your own site
<a href="https://agentmods.dev/skills/event4u-app/agent-config/github-ci"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/github-ci/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for github-ci

Your own site · 80×15
<a href="https://agentmods.dev/skills/event4u-app/agent-config/github-ci"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/github-ci.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,158 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 5.1 $0.00043 $0.01158
Opus 5 $0.00022 $0.00579
Sonnet 5 $0.00009 $0.00232
Haiku 4.5 $0.00004 $0.00116

Measured 9d ago against content hash fa0ef77ebd95, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

github-ci scanned grade A with 0 findings 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 9d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

src/skills/github-ci/SKILL.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

github-ci

When to use

Use this skill when working with GitHub Actions workflows, CI pipeline configuration, or understanding the automated quality and deployment process.

Procedure: Modify CI workflows

  1. Read .github/workflows/ to understand the full pipeline.
  2. Check AGENTS.md for quality tool commands and testing setup.
  3. Read commands/fix/ci.md for CI failure debugging workflow.

Workflow overview

Quality pipeline (quality-tests.yml)

Triggered on: pull_request to main, workflow_dispatch

Read .github/workflows/ to discover the actual job matrix. Common patterns:

  • PHP version is extracted from Dockerfile (ARG PHP_VERSION), not hardcoded.
  • Static analysis may run on larger runners for memory.
  • Tests run in parallel with a matrix strategy per test suite.
  • Branch comparison for dead code and API docs.

Deployment workflows

Workflow Trigger Environment
deploy-review.yaml PR with review-env label Review (ephemeral)
deploy-sta.yaml Push to main Stage
deploy-pro.yaml Tag release-X.Y.Z or schedule (Mon 8AM) Production
deploy.yml After "Static Code Analysis" succeeds on main Envoyer trigger
module-deploy.yaml Reusable workflow (called by others) Parameterized

Other workflows

Workflow Purpose
pr-review-gate.yaml Points-based review system (see code-review skill)
destroy-review.yaml Cleanup ephemeral review environments
add-labels.yml Auto-label PRs
apply-pr-template.yaml Apply PR description template
validate-deployment-files.yaml Validate AWS deployment configs
template-db-dump.yaml Database dump utility

Conventions

Workflow structure

  • Use pinned action versions with SHA hashes (not tags): actions/checkout@<sha> # v6.0.2
  • Use concurrency groups to prevent duplicate runs: group: ${{ github.workflow }}-${{ github.ref }}
  • Use fail-fast: false in matrix strategies for independent job execution.
  • Extract shared logic into reusable workflows (module-deploy.yaml pattern).
  • A job with container: MUST run git config --global --add safe.directory "$GITHUB_WORKSPACE" immediately after actions/checkout — the checkout is owned by a different UID than the container user, so without it every git-backed step dies with fatal: detected dubious ownership.

Read the full file on GitHub · 129 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 129 lines · 43 tokens per session scan A fa0ef77ebd95

Subscribe to this mod's changes

github-ci is a skill published in the GitHub repository event4u-app/agent-config (10 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 1,158 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.