For engineering and AI leaders
Say yes to agents that run for hours.
You rolled out coding agents to ship faster. Then every action started waiting on a human click, and security started asking what the agents can touch. Harden checks every action before it runs, so your agents keep working and your security team can sign off.
The problem
Adoption stalls at the approval prompt
An agent session averages 145 actions, and long ones pass 1,000. Nobody reads 1,000 prompts, so people stop reading them. Anthropic's study of 1,053 testers found that people approved 93% of prompts and caught 13.6% of dangerous commands.
That leaves two bad options. Keep the clicks and the agents crawl. Drop them and security pulls the plug, or keeps agents in a sandbox where they can't do real work.
How it works
Agents propose. Harden executes
Harden sits outside the agent, at its pre-execution hook. Every command, file edit and push waits for a verdict, and safe work goes straight through.
Every action, checked first
No command, file edit or push runs until Harden has checked it against what the session was asked to do.
Fast enough to forget
Verdicts arrive in about 28 ms (P99 about 70 ms), decided on the developer's machine.
Right when it blocks
0.25% wrong hard blocks over 24,809 decisions in our own use.
Blocks that steer
When Harden stops an action, the agent gets the reason and can retry a safe way.
Rollout
One policy across every agent
Your teams don't all use the same agent, and they shouldn't have to. Harden works with Claude Code, Codex, Cursor, Antigravity CLI and Kiro under one policy.
- Pushed by the MDM you already run
- Starts watch-only, so you see what it would do before it blocks anything
- Decisions are made on the developer's machine, and nothing leaves it
Sign-off
Records your security team can say yes to
Every decision is recorded: what the agent tried, what Harden decided and why. Security gets the evidence it needs to approve unattended runs. You get agents that keep working.
Harden lives outside the harness, so the harness never grades its own homework.
FAQ
Questions we hear
Will Harden slow my developers down?
No. Verdicts take about 28 ms (P99 about 70 ms) and are made on the developer's machine. Safe actions go through without anyone noticing. When an action is blocked, the agent gets the reason and can retry a safe way.
Which coding agents does it support?
Claude Code, Codex, Cursor, Antigravity CLI and Kiro, all under one policy.
Do developers still get approval prompts?
Only when a person's call is really needed. Harden decides the clear cases itself, allowing safe actions and blocking dangerous ones. Ambiguous actions come back to a person with the evidence attached.
How do we roll it out?
Push it with the MDM you already run. Start watch-only: Harden records what it would have decided without blocking anything, so you can tune policy before you turn on enforcement.
How do we try it?
Get 60 days of Harden Enterprise free: unlimited developers, custom policies and centralized visibility, with no commitment. Start free at harden.run, or talk to our team about a rollout.
Let the agents run
Book a call and we'll walk through a rollout for your teams, or start free with 60 days of Harden Enterprise.