Ouroboros: A Self-Developing Coding Agent That Evolves Its Own Harness Through Reviewed Commits
Ouroboros is a coding-agent harness whose tools, prompts, context assembly and core implementation evolve through reviewed commits, combining a recursive free-evolution loop with experience-driven changes surfaced by ordinary usage. Running on Opus 5, it reports 86.74% on Terminal-Bench 2.1 and 90.69% on OSWorld-Verified, both new best-reported results, plus SOTA on a five-rollout CL-Bench campaign.
Why it matters
Received 1.1k upvotes on HuggingFace Daily Papers, reflecting strong community interest; a concrete data point in the self-improving-agent direction, including an explicit discussion of the safety problem of agents that rewrite their own code.
Importance: 4/5
Notable paper with 1.1k HuggingFace Daily Papers upvotes (>=100 bump threshold) plus new reported SOTA on Terminal-Bench and OSWorld.