Harden-Runner by StepSecurity is a CI/CD security agent that works like an EDR for GitHub Actions runners. It monitors network egress, file integrity, and process activity in real-time, detecting supply chain attacks such as the tj-actions and Codecov compromises.
Scanned 6/8/2026
Install via CLI
openskills install agentskillexchange/skills---
name: "Harden-Runner CI/CD Security Agent for GitHub Actions"
slug: "harden-runner-cicd-security-agent-github-actions"
description: "Harden-Runner by StepSecurity is a CI/CD security agent that works like an EDR for GitHub Actions runners. It monitors network egress, file integrity, and process activity in real-time, detecting supply chain attacks such as the tj-actions and Codecov compromises."
github_stars: 1055
verification: "security_reviewed"
source: "https://github.com/step-security/harden-runner"
category: "CI/CD Integrations"
framework: "Claude Code"
tool_ecosystem:
github_repo: "step-security/harden-runner"
github_stars: 1055
---
# Harden-Runner CI/CD Security Agent for GitHub Actions
Harden-Runner by StepSecurity is a CI/CD security agent that works like an EDR for GitHub Actions runners. It monitors network egress, file integrity, and process activity in real-time, detecting supply chain attacks such as the tj-actions and Codecov compromises.
## Installation
Requirements and caveats from upstream:
- [Harden-Runner Flagged an Anomalous Outbound Call, Leading to a Docker Documentation Update](https://www.stepsecurity.io/blog/harden-runner-flags-anomalous-outbound-call-leading-to-docker-documentation-update)
Basic usage or getting-started notes:
- [Getting Started Guide](#getting-started)
- This guide walks you through the steps to set up and use Harden-Runner in your CI/CD workflows. For more details, refer to the [official documentation](https://docs.stepsecurity.io/harden-runner).
- ### **Step 1: Add Harden-Runner to Your Workflow**
- Source: https://github.com/step-security/harden-runner
- Extracted from upstream docs: https://raw.githubusercontent.com/step-security/harden-runner/HEAD/README.md
## Source
- [Agent Skill Exchange](https://agentskillexchange.com/skills/harden-runner-cicd-security-agent-github-actions/)
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