Guest post by Andreas Kelm, product manager and creator of pm-brain.

Your AI is far more useful when it has context about your organization.

You know Tuesday morning.

Sprint planning starts in 30 minutes and you still don’t know what to prioritize. Leadership wants the strategy document today, but you’re still piecing together context from Confluence, old emails and slides from a town hall four months ago. A stakeholder changes their mind the day before launch, and the launch slips.

Product work is messy. Nobody can hold all the important context and knowledge in their head. And most AI assistants are only useful when you’ve already got the context sorted yourself.

🧠 What is PM Brain?

PM Brain is an open source repository of markdown files, a git-versioned product management system with an AI coaching layer built for that reality.

It works with Cursor, Claude Code, Claude.ai or any AI tool that can take files as context. The core idea is simple: your AI is far more useful when it has context about your organization, your stakeholders and your current thinking.

⚡ Three things that make it different

Coaching over validation. The agent starts by asking 3–5 uncomfortable questions before suggesting any structure. It separates what you know from what you’re guessing, and makes sure at least one risk is on the table before you start executing.

From thinking to execution. Once the context is in place, the system connects to tactical execution, with playbooks, frameworks and templates for discovery, prioritization and launch. The agent coaches you through them and adapts the recommendations to your organization’s maturity. No generic templates that ignore where you actually are.

A feedback loop on your own development. While you’re thinking and building your product sense anyway, the practice system keeps score: daily logs, weekly reflections and a Product Judgment Test that uses Brier scores to calibrate your intuition over time. Most PMs don’t know whether their judgment is actually improving. This system gives you the evidence.

🚀 How to get started

Fork or clone the repo and open it in Cursor or Claude Code:

git clone https://github.com/andreaskelm/pm-brain.git

Want to try it with an AI chat service? Copy the relevant files in and use them as context in Claude.ai or ChatGPT.

👉 Open source · free

The repo is freely available: github.com/andreaskelm/pm-brain