Launching today

Mantyl

Launching today

Hand over AI-built software with proof

4 followers

Hand over AI-built software with proof

4 followers

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Mantyl compiles your repository, your coding-agent history and executed checks into a verified project passport your client can independently re-run. Every claim is labelled by who proved it. Free local-first CLI for Claude Code, Cursor and Codex. No account.

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Launch tags:SaaS•Developer Tools•Artificial Intelligence

Launch Team / Built With

SkydiveAI coworkers that actually get work done

Promoted

Maker

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Hi Product Hunt. I'm Joel, and I built Mantyl because I kept shipping AI-assisted projects I could not honestly vouch for. The client asks what they are actually getting, and "the agent says it works" is not an answer. Mantyl reads your repository and your coding-agent history, re-runs the setup and checks in a clean Docker sandbox, and compiles it all into a project passport. Every claim is labelled by who proved it: agent said, repository shows, or Mantyl verified. Your client runs one command, npx mantyl receive, and reproduces the proof themselves. The part I trust most: Mantyl is verified with itself. During development its own passport caught an undocumented environment variable and a claim the code did not back up, and the passport on the homepage is a real self-run, not a mockup. The CLI is free forever, local-first, no account, no telemetry. Hosted passports are free during launch. The signed Mantyl Verified accreditation is a one-off from £19 when a delivery needs it. I would genuinely value feedback on the truth model and what the passport should cover next. Ask me anything.

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4d ago

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4d ago

Launching Tuesday: a project passport for AI-built software

I ship AI-assisted projects to people who cannot read the code, and "the agent says it works" never felt like an honest handover. So I built Mantyl: a free local-first CLI that reads your repo and your coding-agent history, re-runs the checks in a clean Docker sandbox, and compiles a passport your client can independently re-verify with one command.

The passport on the homepage is a real self-run: Mantyl verified its own repository at every milestone, and caught its own undocumented env var doing it.

We go live Tuesday. Before then I would genuinely value eyes on the truth model: every claim is labelled agent said, repository shows, or Mantyl verified, and I want to know what a passport should cover that this one does not. https://www.mantyl.dev/p/495fc5a...

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