arXiv:2609.27678 compares Jev and nine hosted/local models on ContractNLI: cost, latency, baseline accuracy, and All-12 persistent correctness rank differently. Close means can hide flips—select on persistent correctness, not accuracy alone.
A practical teardown of alibaba/open-code-review: deterministic engineering owns file selection and positioning; the agent owns deep reasoning. Covers AACR-Bench, delegation mode, CI hooks, copyable patterns, and limits.
A teardown of cloudflare/security-audit-skill: Skill distribution, six audit phases, confirmed / needs_validation / rejected verdicts, adversarial validation, and fail-open behavior without a sandbox—plus install steps and enterprise limits.
A deep read of arXiv:2609.26760 Growing Harness—turning recurring control into executable code via task feedback—contrasted with “just stuff more context” and with in-site harness / Skills / deterministic-pipeline narratives.
A practical, evidence-based guide to Cordis, spatiotemporal composability, revertible effects, reactive coeffects, plugin lifecycles, and the architecture of DeepSeek Harness.
What makes a production agent loop survive the real world? We extract the Agent Harness Pattern from Claude Code's source — a generalizable blueprint for building resilient, self-recovering AI agent runtimes.
This comprehensive analysis examines two dominant methodologies in autonomous software engineering: the Ralph Wiggum Loop (brute-force execution pattern) and Open Spec (structured requirements framework). Discover how these approaches address LLM limitations like "Context Rot" and the "Dumb Zone," and their role in the emerging "Autonomous Stack" that is reshaping software development in 2026.