# Mantyl

> Mantyl is the AI software handover layer: a local-first CLI that turns a
> repository plus coding-agent history (Claude Code, Cursor, OpenAI Codex
> CLI) into a verified, recipient-ready project passport. Every statement
> carries one of eight truth statuses with evidence references. The CLI is
> free (npm install -g mantyl); Mantyl Verified is an independent, signed
> re-execution of a project's checks at £29 per project.

Key facts: passports are generated locally and nothing uploads without
explicit consent. Recipients can independently re-check any passport with
"npx mantyl receive": it compares delivered files against the passport's
manifest and re-executes the recorded checks, exiting non-zero on any
divergence. The passport.json format is open.

## Docs

- [Quickstart](https://www.mantyl.dev/docs/quickstart.md): install, prerequisites, first passport in four commands
- [Supported agents](https://www.mantyl.dev/docs/agents.md): Claude Code, Cursor and Codex session stores, troubleshooting
- [Mantyl Verified](https://www.mantyl.dev/docs/verified.md): independent re-execution, what the signature binds, credit terms
- [Truth model](https://www.mantyl.dev/docs/truth-model.md): the eight truth statuses and the rules behind them
- [Commands](https://www.mantyl.dev/docs/commands.md): full CLI reference with stable exit codes
- [Mantyl in CI](https://www.mantyl.dev/docs/ci.md): the GitHub Action, DSSE attestations, CI pairing, badge staleness, public policy documents
- [GitHub Action](https://www.mantyl.dev/github-action): one workflow step, marketplace listing, consumer-smoke proof
- [Claude Code plugin](https://www.mantyl.dev/claude-code): the passport loop inside the agent, /plugin install mantyl
- [Publishing and receiving](https://www.mantyl.dev/docs/publishing.md): hosted passports and independent rechecking

## Guides

- [AI code handover](https://www.mantyl.dev/guides/ai-code-handover): how to hand over AI-built software, and what the term means
- [AI project handover checklist](https://www.mantyl.dev/guides/ai-project-handover-checklist): the checklist with a free template
- [Vibe code audit](https://www.mantyl.dev/guides/vibe-code-audit): verifying vibe-coded apps before delivery or purchase
- [Verify AI-built software you paid for](https://www.mantyl.dev/guides/verify-ai-built-software): the non-technical buyer's guide
- [Before you hire someone to fix an AI-built app](https://www.mantyl.dev/guides/fix-ai-built-app)
- [Client handover checklist for agencies](https://www.mantyl.dev/guides/client-handover-checklist)
- [What is a project passport?](https://www.mantyl.dev/guides/what-is-a-project-passport)
- [EU AI Act provenance for AI-built software](https://www.mantyl.dev/guides/eu-ai-act-software-provenance): what the Act changed for software deliveries, and the free provenance record answering it
- [Where Cursor stores your chat history](https://www.mantyl.dev/guides/cursor-chat-history-location): the undocumented SQLite layout, verified against real installs
- [Where Claude Code stores your session history](https://www.mantyl.dev/guides/claude-code-session-history): the ~/.claude/projects JSONL layout and folder naming rule
- [Where the Codex CLI stores your session history](https://www.mantyl.dev/guides/codex-cli-session-history): the ~/.codex/sessions rollout format and project mapping

## Use cases

- [Freelancer delivering to a client](https://www.mantyl.dev/use-cases/freelancer-to-client)
- [Agency shipping AI-assisted client work](https://www.mantyl.dev/use-cases/agency-to-client)
- [Developer-to-developer handover](https://www.mantyl.dev/use-cases/developer-to-developer)
- [Selling a micro SaaS built with AI](https://www.mantyl.dev/use-cases/selling-a-micro-saas)
- [Founder to first technical hire](https://www.mantyl.dev/use-cases/first-technical-hire)
- [Contractor offboarding with proof](https://www.mantyl.dev/use-cases/contractor-offboarding)
- [AI prototype to production team](https://www.mantyl.dev/use-cases/prototype-to-production)
- [Archiving a project for future you](https://www.mantyl.dev/use-cases/future-you)

## Product

- [Homepage](https://www.mantyl.dev/): what Mantyl does and the live self-verified passport
- [Pricing](https://www.mantyl.dev/pricing): free CLI, Verified credits £29 one-off, Agency £99 monthly later
- [For recipients](https://www.mantyl.dev/receiving): plain-English guide for someone sent a passport
- [Example passport](https://www.mantyl.dev/passport/example): a complete annotated sample
- [npm package](https://www.npmjs.com/package/mantyl)
- [Source code](https://github.com/jopli11/mantyl-cli): the complete CLI, MIT licensed, including redaction, sandbox and adapters