Harden AIF is a free, local security tool for AI coding agents. Its post-trained model checks tool calls before they run, using your request and session context. It beat frontier models on key agent-security benchmarks, while keeping your repo and tool output on your machine.
Congratulations on the launch. Very cool. This is very timely. Would be curious to understand the common gotchas and security holes it catches. Exciting
This could be especially useful for developers experimenting with agents on production-connected repositories. Nice launch and important timing.
Honestly I've been backing out of using certain agent skills because I don't know what they're touching i think this solves that completely. @kartikrawatt@pushpak_pujari1
This looks really useful for keeping coding agents safe.
Nice to see it works in the background without adding extra work.
congrats on the launch!! 👍 funny timing, i backed out of a third-party agent skill yesterday, bacause it runs npx in my repo and who knows what it touches.
local check-before-it-runs is exactly the thing! does it cover the install step, or just runtime?
I’m curious which tool call security holes are most commonly caught with Harden! What are the most common mistakes agents are making?
I was just wondering what the plan is regarding how the teams implementing this work in shared repositories and CI pipelines because that’s where all the scary automation takes place.
Security usually gets added after something goes wrong. Building it directly around agent actions feels like a much better approach.
Would be interesting to see integrations with CI/CD environments where agents can operate but have tightly controlled permissions and policies.
Finally, something that gives me a reprieve from "approval for every single thing." This is something I have experienced as a "nervous parent" with Cursor for several months now.
Congratulations on the launch!
I have been depending on Claude hooks with an extensive dangerous-pattern-matchers to ensure nothing untoward is happening. Working so far but takes an effort to maintain. Keen to try this out!
Congratulations on the launch @pushpak_pujari1 ! Excited to try out Harden finally.
this is increasingly important with the explosion of tools calls in virtually every task enterprises handle
“Trust but verify”… i need this automated. Harden seems to be exactly that…
We built Harden after seeing how difficult it is to control what AI agents can access and do. As users ourselves, we wanted a simpler way to set policies, monitor activity, and deploy agents confidently.
Companies have always had risk and compliance as separate functions from product and business development because their incentives are at odds. Risk team looks at risk adjusted long term reward, but biz-dev indexes on shorter term rewards. In a similar way, the same system can't both be the coding agent, and the security agent. That's why Harden is needed
About Harden on Product Hunt
“A security layer for AI coding agents”
Harden launched on Product Hunt on September 9th, 2026 and earned 399 upvotes and 115 comments, earning #2 Product of the Day. Harden AIF is a free, local security tool for AI coding agents. Its post-trained model checks tool calls before they run, using your request and session context. It beat frontier models on key agent-security benchmarks, while keeping your repo and tool output on your machine.
Harden was featured in Developer Tools (519.6k followers), Artificial Intelligence (478.9k followers) and Security (2.9k followers) on Product Hunt. Together, these topics include over 212.2k products, making this a competitive space to launch in.
Who hunted Harden?
Harden was hunted by Rohan Chaubey. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Rohan Chaubey
Congratulations on the launch. Very cool. This is very timely. Would be curious to understand the common gotchas and security holes it catches. Exciting