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About

Harden AIF is an agent endpoint security platform for AI coding agents. It evaluates supported agent tool calls before execution using the developer’s intent, session context, organisational policy, and the effect of the proposed action. Harden helps protect against destructive commands, unauthorized access, unintended data transfers, secret exposure, privilege misuse, and other unsafe agent actions. Legitimate actions can proceed normally, sensitive data in supported flows can be safely redacted, and actions that fall outside the developer’s intent or authority are blocked before execution. Harden works across popular coding agents and agentic development tools including Claude Code, Codex, Cursor, Antigravity CLI, Kiro, Hermes, and OpenClaw, providing a consistent security layer across the agent ecosystem.

About

Mountain Theory, the AI security company: every action an autonomous AI takes is checked before it runs, ALLOW, HOLD or BLOCK. Mountain Theory controls what your AI agents can do. Every action is checked before it runs, then allowed, held for a person to approve, or blocked. When an agent tries to work around a block, the workaround is stopped too. When an agent drifts off the task it was given, that is caught. New bad behavior is stopped the day it appears, with no new rule needed. It keeps personal data from leaving your environment and blocks instructions hidden in emails and documents. Rules are written in plain English, with no code. Every decision is logged for your auditor. It works with any AI you already use, in your environment or the cloud. We publish our recorded tests, misses included.

Platforms Supported

Windows Not Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software engineering teams, security teams, DevSecOps teams, platform engineering teams, AI engineering teams, CISOs, security leaders, and enterprises deploying AI coding agents.

Audience

Enterprise security, risk and IT teams running autonomous AI agents

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version Supported
Free Trial Not Supported

Pricing

Paid plans use flat annual pricing. A 30-day proof of concept is available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Harden
Founded: 2025
United States
harden.run/

Company Information

Mountain Theory
Founded: 2024
United States
mountaintheory.ai

Alternatives

Alternatives

Enkrypt AI

Enkrypt AI

Anaconda
Pi

Pi

Pi Security

Categories

AI Agent Security Supported

Categories

AI Agent Security Supported

Integrations

Antigravity CLI Supported
Claude Code Supported
Cursor Supported
Google Antigravity Supported
Hermes Agent Supported
Kiro Supported
OpenAI Codex Supported
OpenClaw Supported

Integrations

Antigravity CLI Not Supported
Claude Code Not Supported
Cursor Not Supported
Google Antigravity Not Supported
Hermes Agent Not Supported
Kiro Not Supported
OpenAI Codex Not Supported
OpenClaw Not Supported
Claim Harden and update features and information
Claim Harden and update features and information
Claim Mountain Theory and update features and information
Claim Mountain Theory and update features and information