The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Market Signal
Why It Has Market Pull
ECC (Everything Claude Code) is a real, extraordinarily fast-growing agent-harness project — its star count checks out almost exactly and independent press has covered it at three separate growth milestones. It's also genuinely divisive: heavy Claude Code/Cursor users report real time savings while critics call it over-engineered for casual use. Worth a hands-on look given the sheer scale of adoption.
- 245,688 GitHub stars and 37,084 forks, matching the reported 245,654 almost exactly
- 347 contributors and a global rank of #17 on star-history.com — an unusually high rank for a repo created in January 2026
- Covered independently at three growth milestones (82K, 100K, 163K stars) by outlets including Augment Code and Medium between roughly February and June 2026
- Built by a 2026 Anthropic x Forum Ventures hackathon winner; ships 68 agents and 286 skills, plus a hosted 'ECC Pro' GitHub App as a monetization path
- Community reception is openly split, per coverage of r/ClaudeCode's 4,200+ weekly contributors
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What People Are Saying
"For light users the system is overweight—they'll feel the friction more than the benefit, and most of its power will sit unused"independent review
"Over-engineering is the loudest complaint... 997 internal tests, multi-language rule architecture, and a built-in orchestration engine that exceeds what most teams need"independent review
"implements the exact harness-engineering principles Anthropic's own blog has been preaching"independent review
"an opinionated operator system for getting more out of coding agents"GhTrends.dev
"Heavy AI coding users who already live in Claude Code or Cursor see the biggest payoff"independent review
"dividing the developer community"Medium article





















