Octopus OS: a 45k-line Rust kernel where agents rewrite their own harness mid-task
_AustinCalvert_ · x · 2026-10-25
Developer miu21590 unveiled Octopus OS, a reinvented agent harness where agents can edit their own harness in the middle of a task — self-improvement isn't a bolted-on stage but the architecture itself.
Key points:
- Built over 8 months by dropping the usual agent loop entirely; designed like a real operating system with a 45k-line Rust kernel
- System state lives in JSON files: goals act as real environments with inputs, outputs, and custom triggers — all editable by agents while they work inside
- Built as a product from day one, not a research demo: a full desktop app built on the Codex source, taking 3 months; the client already works
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