Free and Open Source
The flanner CLI, MCP server, and web UI are free and open source (MIT). Mesh, for teams, is on the roadmap.
Local
Everything the tool does today, on your machine
- Unlimited projects and plan files
- Automatic semantic versioning and full history
- Freshness status for every plan, backed by evidence
- MCP integration with Claude Code and Codex (AGENTS.md)
- Agent integration via guard hook, CLAUDE.md/AGENTS.md, and skill
- Local web dashboard and CLI tools
- Git protection for plan files
- JIRA issue linking
- Local SQLite storage, no account required
Mesh
Team sync, without handing over your plans
or $190 a year, saving $38 — 2 months free
- Plans sync directly between your team's authorized devices
- No VPN, no open ports, and no administrator rights
- Flanner does not store your plan content
- Every version signed, so any device can verify its history
- Review and approval, with a clear accepted baseline
- Organization, device, and access management
- Everything in Local
Frequently Asked Questions
Can I pay yearly?
Yes. Paying yearly costs $190 a seat instead of $228, which is 2 months free. A seat is an accepted member, so invitations cost nothing until somebody takes one up.
Is flanner really free?
Yes. The CLI, MCP server, and local web UI are open source under the MIT license and free to use forever. You can read, fork, and self-host the whole thing from GitHub.
How do I install it?
Run pip install flanner, then flanner init in your project. It auto-registers with Claude Code and Codex.
What is Flanner Mesh?
A hosted tier for teams. Plans sync directly between your authorized devices rather than into our storage: Flanner Mesh manages accounts, billing, devices, and access, and does not store your plan content. It's on the roadmap, not available yet. Join the waitlist to hear when it lands.
Do I need an account to use flanner?
No. The local tool stores everything in a SQLite database on your machine and works entirely offline. An account only comes into play with Mesh, later.
Which AI assistants does it work with?
Claude Code and Codex out of the box (via CLAUDE.md and AGENTS.md), plus any assistant that speaks the Model Context Protocol.
Can I contribute?
Absolutely, it's open source. Open an issue or PR on GitHub.
Start in one command
It's free and open source. Install from GitHub and run flanner init.
View on GitHub