ECC 2.2 hits GitHub Trending with an agent harness system for Claude Code, Codex
ECC is an MIT-licensed open-source project that describes itself as an "agent harness performance optimization system," giving coding agents such as Claude Code, Codex, OpenCode and Cursor a shared plan-test-implement-review-verify-remember workflow. Its repository claims 71 agents, 311 skills and 97 commands plus hooks, memory, continuous learning and AgentShield security scanning, installed via `npx [email protected] setup`, with a paid ECC Pro hosted GitHub App from $19 per seat per month for private repos. The project says it works best with Claude Code today, offers native plugin paths for Codex and Kimi Code, and ships capability-limited adapters for Cursor, Gemini, Zed, GitHub Copilot, Qwen and others.
It shows coding-agent competition expanding from the model itself to the engineering layer around each harness — skills, memory, security and workflow — which can matter as much as the model in day-to-day development.