Free Tools

Tools we share for free. Each one is open on GitHub, with its limits stated plainly.

Three plain files feed one daily brief.

For you

Plainbrain

A second brain in plain Markdown files, run by your AI agent and approved by you: one list of commitments, an inbox for capture, notes worth finding again, and a daily brief.

An agent's action passes rules it reads, limits it cannot cross, and people who check.

For your team

Human-Approved Agent Playbook

A guide, templates and agent skills for small teams putting AI agents to work, with a named owner for every agent and a person's yes on what matters.

Want Help Putting Them to Work?

Both are free to use on your own. If you would rather have help setting them up for your team, tell us what you use today.