Hey maker here. Heald started from a dumb but constant annoyance: I'd make an architectural decision in one AI agent, switch to another for a different task, and have to re-explain everything from scratch. Same project, same decisions, zero memory carried over.
Every fix I found for this was either a cloud service, a Node app with a web UI, or an MCP server I had to keep alive. I wanted something that just... sat in the project as files. So Heald is a single Rust binary install it, run `heald init`, and it starts writing plain Markdown into `.heald/`. No database, no server, nothing to run in the background.
A single-binary Rust CLI that keeps Claude Code, Cursor, Antigravity, Codex, and Hermes reading from the same rules and project memory automatically. Unlike other memory tools, Heald actively prunes context to fit each agent's budget instead of just dumping everything, so switching agents mid-project doesn't mean losing history or blowing your context window.
