act-local-ci

act-local-ci is a skill for Claude Code from FortiumPartners/ensemble. It costs 0 tokens per session (897 once invoked), scanned D, original, MIT.

A tool for running GitHub Actions workflows locally with nektos/act. GitHub Actions are automated jobs that build, test, and deploy code.

In plain words
What is it for?
It helps run selected jobs or full workflows, simulate events such as pull requests, test build matrices, provide secrets, and inspect artifacts locally.
Why use it?
It lets developers check CI workflows before pushing changes to GitHub, helping catch configuration errors earlier.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the ensemble-git plugin — 3 skills, 3 agents shipped together

Good fit It helps run selected jobs or full workflows, simulate events such as pull requests, test build matrices, provide secrets, and inspect artifacts locally.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fortiumpartners/ensemble/act-local-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 FortiumPartners/ensemble --skill act-local-ci
Clone the repo
git clone --depth 1 https://github.com/FortiumPartners/ensemble

Made for: Claude Code.

Or install ensemble-git, the plugin that ships this one along with the rest of its 3 skills, 3 agents.

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 act-local-ci

README.md
[![agentmods](https://agentmods.dev/badge/skills/fortiumpartners/ensemble/act-local-ci/github.svg)](https://agentmods.dev/skills/fortiumpartners/ensemble/act-local-ci)
Your own site
<a href="https://agentmods.dev/skills/fortiumpartners/ensemble/act-local-ci"><img src="https://agentmods.dev/badge/skills/fortiumpartners/ensemble/act-local-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 act-local-ci

Your own site · 80×15
<a href="https://agentmods.dev/skills/fortiumpartners/ensemble/act-local-ci"><img src="https://agentmods.dev/badge/skills/fortiumpartners/ensemble/act-local-ci.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 897 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 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 $0.00000 $0.00897
Opus 5 $0.00000 $0.00449
Sonnet 5 $0.00000 $0.00179
Haiku 4.5 $0.00000 $0.00090

Measured 7d ago against content hash ba0eca3da95f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade D, and why

act-local-ci scanned grade D with 3 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/run-act.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

curl https://raw.githubusercontent.com/nektos/act/master/install.sh | sudo bash

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl https://raw.githubusercontent.com/nektos/act/master/install.sh | sudo bash

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl https://raw.githubusercontent.com/nektos/act/master/install.sh | sudo bash
packages/git/skills/act-local-ci/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Act Local CI Skill

Quick Reference - Test GitHub Actions workflows locally using nektos/act

Mission

Run GitHub Actions workflows locally before pushing to validate CI/CD pipelines, catch errors early, and reduce iteration time. Uses nektos/act to simulate GitHub Actions runner environment.

Core Capabilities

  • Local Workflow Execution: Run .github/workflows/*.yml files locally
  • Job Selection: Execute specific jobs or entire workflows
  • Event Simulation: Trigger with push, pull_request, workflow_dispatch events
  • Secret Injection: Pass secrets securely without committing
  • Matrix Testing: Test matrix builds before pushing
  • Artifact Handling: Capture and inspect build artifacts

Quick Start

# Run all workflows (default push event)
act

# Run specific workflow
act -W .github/workflows/test.yml

# Run specific job
act -j build

# Simulate pull request event
act pull_request

# Pass secrets
act -s GITHUB_TOKEN=$GITHUB_TOKEN

# List available workflows and jobs
act -l

Prerequisites

# Install act (macOS)
brew install act

# Install act (Linux)
curl https://raw.githubusercontent.com/nektos/act/master/install.sh | sudo bash

# Docker is required
docker --version  # Must be installed and running

Common Patterns

Test Before Push

# Validate test workflow passes
act -j test --dryrun  # Preview what would run
act -j test           # Actually run tests

# If successful, push
git push origin feature-branch

Debug Failing CI

# Run with verbose output
act -v

# Use specific runner image
act -P ubuntu-latest=catthehacker/ubuntu:act-latest

# Keep container for debugging
act --reuse

Matrix Build Testing

# Run all matrix combinations
act -j build

# Run specific matrix combination
act -j build --matrix os:ubuntu-latest

Runner Images

GitHub Runner Act Default Recommended
ubuntu-latest node:16-buster-slim catthehacker/ubuntu:act-latest
ubuntu-22.04 node:16-buster-slim catthehacker/ubuntu:act-22.04
ubuntu-20.04 node:16-buster-slim catthehacker/ubuntu:act-20.04

Read the full file on GitHub · 144 lines

Files

What ships with it

3 files 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. 7d ago First seen · 144 lines · 0 tokens per session scan D ba0eca3da95f

Subscribe to this mod's changes

act-local-ci is a skill published in the GitHub repository FortiumPartners/ensemble (12 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 897 tokens. A static security scan graded it D with 3 findings (asks for root, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.