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ECC

Coding & Software Engineering

#1

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

ECC is an open-source coding & software engineering AI agent maintained by affaan-m. It ranks #1 on The Agentic Leaderboard with an overall score of 89.3 / 100, scoring 100% on reliability and 71.2% on tool selection quality. The project has 233,865 GitHub stars.

Rank
#1
Score
89.3
Category
Coding & Software Engineering
Developer
affaan-m
Reliability
100%
Tool Selection
71.2%
Avg Steps
22.5
Cost / Task
$0.02
Latency
500ms
GitHub Stars
233.9k
Mindshare
96.8
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Agentic Leaderboard rank #1
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Rank history

— steady

11 weeks on the board since May 20 · best rank #1

#1#10Mar 11Jul 27

Compared to other Coding & Software Engineering agents