Your coding agent is great at building. It's bad at remembering why. A codebase records what the software is, never why. That context decays, and every new session starts from zero. Stele is a shared, self-maintaining ledger of the why. It holds the decisions and tradeoffs behind the code, and every agent reads and writes it, across Claude Code, Cursor, Codex and more. So your agent helps you steer, not just type.