TBH it's a good harness.
Hongyu Ren, Meta Superintelligence Labs, the night Muse Code shipped. This page is the harness he meant, drawn as a machine you can run.
events 0agents 0worktrees 0state idle
Simulated session. The shape is real: main loop, persistent background agents, approval gate, isolated worktrees, an append-only event log that survives a crash.
Muse Code reads a MUSE_CODE.md file from your project root as custom instructions. Build yours.