
Harden AIF
A local security layer that checks AI coding agent actions before they run.
Data verified Sep 26, 2026
Score
Editorial Verdict
AI-researched, not hands-on testedHarden AIF acts as a guardrail between an autonomous coding agent and your system, intercepting proposed actions like file deletions or shell commands so you can catch destructive mistakes before they execute. It's a sensible fit for developers and teams running agents in auto-approve or unattended modes, where the risk of an agent running an unsafe command without review is highest. Because it runs locally as an in-the-loop check, it's better suited to individual or small-team setups than to centralized policy enforcement across an organization. Note that the available data is thin on specifics — there's no detail on which agents or environments it supports, what the free tier covers versus paid, or how well it distinguishes genuinely risky actions from false alarms, so treat this as a starting point rather than a verdict on how well it works in practice.
Reviewed by AIToolPundit Editorial Team · last verified September 2026
About Harden AIF
Harden AIF is a local security layer that checks an AI coding agent's proposed actions before they actually run, aimed at catching risky or destructive operations (bad file deletes, unsafe shell commands) before an autonomous coding agent executes them. It is aimed at developers and teams running autonomous coding agents who want a safety check in the loop rather than trusting agent actions to run unchecked.
Screenshots

Commonly Cited Strengths & Limitations
Strengths
- Free forever for individual developers with no account or credit card required
- Runs and evaluates every action on-device rather than sending agent activity to a third-party cloud
- Works across multiple coding agents (Claude Code, Codex, Cursor, Antigravity CLI, Kiro) instead of locking into one tool
Limitations
- Enterprise features (compliance reporting, air-gap mode, MDM installation, SLAs) are custom-priced, not published
- Currently supported on macOS and Linux only, per its own installation guide
Details
- Pricing Model
- Freemium
- Starting Price
- Free
- Category
- Cybersecurity
Frequently Asked Questions
How much does Harden AIF cost?
Harden AIF starts at Free (Freemium).
Does Harden AIF have an API?
Yes, Harden AIF provides an API for developers.
Is Harden AIF cloud-based or self-hosted?
Harden AIF is offered as a cloud-based (SaaS) deployment.
What are the downsides of Harden AIF?
Enterprise features (compliance reporting, air-gap mode, MDM installation, SLAs) are custom-priced, not published Also, Currently supported on macOS and Linux only, per its own installation guide
What is the best alternative to Harden AIF?
Egosecure Endpoint - Matrix42 is the closest alternative to Harden AIF, followed by Decawork and Pillar Security.
How does Harden AIF compare to Egosecure Endpoint - Matrix42?
Harden AIF and Egosecure Endpoint - Matrix42 are both used for cybersecurity. See the full side-by-side comparison for pricing and feature differences.
Key Features
- Pre-execution tool-call judgingRuns local cybersecurity models that inspect every tool call a coding agent (Claude Code, Codex, Cursor, Antigravity CLI, Kiro, etc.) is about to make and blocks or redacts dangerous ones before they execute.
- Block-and-steer with safe retryWhen it blocks a dangerous action (e.g. deleting a production namespace), it suggests a safer equivalent command the agent can retry instead.
- Local decision historyKeeps a local, on-device audit log and decision store of every allowed, blocked, redacted, or logged tool call, with no retention cap on the free tier.
- Native agent hooks + MCP proxy fallbackIntegrates natively with supported coding agents via hooks, and falls back to an MCP proxy for agents without native support.
- Runs entirely on-deviceCybersecurity models run locally on the developer's own machine rather than routing tool-call data to a cloud service.
Technical Details
- Deployment
- Self-Hosted
- API
- Available
Official Pricing
Harden AIF's published plans · verified Sep 26, 2026
Free
$0/mo
- Core pre-execution secret-flow blocking, free forever
- Works with Claude Code, Codex, Cursor, Antigravity CLI, Kiro
- Local decision store and audit view, no retention cap
- No account required
Enterprise
Contact Sales
- Compliance reporting
- Air-gap / zero-telemetry mode
- Managed installation via MDM
- Support SLAs, custom terms
Real Pricing from Verified Users
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