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Harden Review

Harden AIF is a local cybersecurity tool that checks the actions of coding agents before execution to prevent potentially harmful actions.

shipped Sep 9, 2026agentsfreemium
Monthly visits4/mo
agentscode
Harden — product screenshot

Why it matters

1Harden AIF launched on Product Hunt on September 9, 2026, ranking as the #2 Product of the Day.
2Harden-Runner actively secures over 25 million CI/CD workflow runs every week.
3Harden AIF received 399 upvotes and 115 comments on Product Hunt.
4Harden-Runner is utilized by thousands of pipelines, including those from Microsoft, Google, and CISA.

About Harden

Business Model
Freemium SaaS
Platforms
macOS, Linux
Target Audience
Individual developers and organizations requiring coding agent security.

Pricing Plans

Free
$0 / forever
  • • Core pre-execution secret-flow blocking on your machine is free forever
  • • Works with Claude Code, Codex, Cursor, Antigravity CLI and Kiro
  • • Block-and-steer with safe retry
  • • Local decision store and audit view, no retention cap
Enterprise
Custom
  • • Compliance reporting
  • • Air-gap / zero-telemetry mode
  • • Managed installation via MDM
  • • Support SLAs

overview

What is Harden?

Harden is a cybersecurity tool that enables individual developers and organizations to secure AI coding agents and CI/CD pipelines. It evaluates AI agent actions before execution and monitors CI/CD runners to prevent potentially harmful activities and supply chain attacks. Harden offers two primary tools: Harden Agentic Integrity Foundation (AIF) and Harden-Runner. Harden AIF is a local security tool for AI coding agents, performing pre-execution checks on tool calls using the user's request and session context, keeping repository and tool output on the local machine. Harden-Runner is a CI/CD security agent functioning as an Endpoint Detection and Response (EDR) system for GitHub Actions runners, continuously monitoring network egress, file integrity, and process activity to detect and prevent threats in real-time.

features

Key Features of Harden

Harden provides a suite of features designed to enhance security for AI coding agents and CI/CD pipelines, focusing on pre-execution control and real-time monitoring.

  • Local-first runtime for Harden AIF, ensuring sensitive code and data remain on the developer's machine.
  • Integration with multiple coding agents including Claude Code, Codex, Antigravity CLI, Cursor, and Kiro.
  • Pre-execution monitoring for AI coding agents, intercepting and evaluating tool calls before execution.
  • Customizable enterprise-level features for shared controls and managed deployment.
  • Free availability for individual developers for Harden AIF.
  • Evaluation of AI agent actions before execution using specialized cybersecurity LLMs.
  • Application of organization-defined policies to agent actions.
  • Checks for recognized secrets and sensitive files within agent actions.
  • Ability to allow, rewrite, or block agent actions based on intent and policy.
  • Continuous monitoring of network egress, file integrity, and process activity on GitHub Actions runners via Harden-Runner.

use cases

Who Should Use Harden?

Harden is designed for individual developers, security teams, and organizations that utilize AI coding agents and CI/CD pipelines, aiming to enhance security and maintain control over autonomous systems.

  • Individual Developers: To prevent harmful actions from coding agents and secure their local coding environment.
  • Organizations: To ensure compliance with enterprise regulations and apply organization-defined security policies to AI agent actions.
  • Security Teams: To shift security left toward pre-execution control for agentic systems and secure agentic endpoints.
  • Teams using CI/CD: To prevent exfiltration of CI/CD secrets and source code, detect tampering, and identify anomalies in GitHub Actions runners.

how to use

How to Use Harden

Harden AIF can be integrated locally with various coding agents to monitor and control their actions, while Harden-Runner is deployed as a CI/CD security agent for GitHub Actions.

  • 1Download and install Harden AIF on macOS or Linux for local integration with coding agents.
  • 2Configure Harden AIF to monitor specific coding agents like Claude Code or Cursor.
  • 3Define organization-specific policies for agent actions, including rules for file access, commands, and network calls.
  • 4Deploy Harden-Runner as an EDR system for GitHub Actions runners within CI/CD pipelines.
  • 5Utilize Harden-Runner to monitor network egress, file integrity, and process activity on GitHub Actions runners.
  • 6Review Harden's logs and alerts to identify and respond to potentially harmful or anomalous agent and CI/CD activities.

pricing

Harden Pricing & Plans

Harden offers a freemium model, providing a free tier for individual developers and custom enterprise solutions for organizations requiring advanced features and managed deployment.

  • Free (Harden AIF): $0 for individual developers, no account or credit card required. Includes local-first runtime and integration with multiple coding agents.
  • Enterprise (Harden AIF): Custom pricing for organizations with procurement and deployment requirements, offering shared controls and managed deployment.
  • Community (Harden-Runner): Free for public repositories running on GitHub-hosted runners.

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Pros

  • +Provides pre-execution security for AI coding agents, preventing harmful actions before they occur.
  • +Operates locally (Harden AIF), keeping sensitive code and data on the developer's machine.
  • +Integrates with a range of popular coding agents (e.g., Claude Code, Codex, Cursor).
  • +Harden-Runner offers real-time EDR capabilities for GitHub Actions runners, securing CI/CD pipelines.
  • +Offers a free tier for individual developers and public repositories, making advanced security accessible.
  • +Allows for policy-driven control over agent actions, including blocking or rewriting unsafe commands.

Cons

  • −Enterprise features for Harden AIF require custom pricing, which may not be transparent upfront.
  • −Harden-Runner's free tier is limited to public repositories on GitHub-hosted runners, potentially excluding private projects or self-hosted runners.
  • −Requires integration and configuration with existing coding agents and CI/CD pipelines, which may involve an initial setup effort.
  • −The effectiveness of policy enforcement relies on the accuracy and comprehensiveness of defined organizational policies.
  • −As a specialized tool, it may require specific cybersecurity expertise to fully leverage its advanced features.

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