affaan-m/ECC

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

About the project

ECC is a toolkit that organizes and improves how coding agents work through skills, memory, security checks, research practices, and related extensions. It is for developers using agents such as Claude Code, Codex, OpenCode, and Cursor.

Latest release v2.2.3 · 1 Oct 2026

25 files for GitHub Copilot, Codex, OpenCode, Claude Code and Kiro: ECC copilot-instructions.md, ECC AGENTS.md, ECC CLAUDE.md, coding-style and 21 more — 13,656 tokens loaded in every session.

Open on GitHub ecc.tools

Instructions

ECC copilot-instructions.md .github/copilot-instructions.md A 1,020 tok
ECC AGENTS.md AGENTS.md A 2,792 tok
ECC CLAUDE.md CLAUDE.md A 891 tok
coding-style .kiro/steering/coding-style.md A 348 tok
ECC cpp-patterns.md .kiro/steering/cpp-patterns.md A 723 tok
ECC dev-mode.md .kiro/steering/dev-mode.md A 220 tok
development-workflow .kiro/steering/development-workflow.md A 240 tok
git-workflow .kiro/steering/git-workflow.md B 233 tok
ECC golang-patterns.md .kiro/steering/golang-patterns.md A 214 tok
ECC java-patterns.md .kiro/steering/java-patterns.md A 722 tok
ECC kotlin-patterns.md .kiro/steering/kotlin-patterns.md A 869 tok
lessons-learned .kiro/steering/lessons-learned.md A 671 tok
patterns .kiro/steering/patterns.md A 232 tok
performance .kiro/steering/performance.md A 300 tok
ECC php-patterns.md .kiro/steering/php-patterns.md A 464 tok
ECC python-patterns.md .kiro/steering/python-patterns.md A 192 tok
ECC research-mode.md .kiro/steering/research-mode.md A 318 tok
ECC review-mode.md .kiro/steering/review-mode.md A 309 tok
ECC ruby-patterns.md .kiro/steering/ruby-patterns.md A 499 tok
ECC rust-patterns.md .kiro/steering/rust-patterns.md A 808 tok
security .kiro/steering/security.md A 215 tok
ECC swift-patterns.md .kiro/steering/swift-patterns.md A 359 tok
testing .kiro/steering/testing.md A 223 tok
ECC typescript-patterns.md .kiro/steering/typescript-patterns.md A 270 tok
ECC typescript-security.md .kiro/steering/typescript-security.md A 524 tok

These files are affaan-m/ECC's own configuration — they tell GitHub Copilot, Codex, OpenCode, Claude Code and Kiro how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.