Language: English Português (Brasil) 简体中文 繁體中文 日本語 한국어 Türkçe Русский Tiếng Việt ไทย Deutsch Español [!WARNING] Official sources only. Install ECC only from verified channels: the GitHub repository github.com/affaan m/ECC, the npm packages ecc universal and ecc agentshield , the GitHub App, the plugin slug ecc@ecc , and the project website ecc.tools. Third party re uploads and unofficial mirrors are not maintained or reviewed by the project and may contain malware. ECC Pro + GitHub App Install free · Private repos from $19/seat/mo Sponsor ECC Fund the open source project Community Discord · Q&A · Show and Tell OSS stays free. This repo is MIT licensed forever. ECC Pro is the hosted GitHub App for private repos. Sponsors and Pro subscribers fund the work. That's why a single maintainer ships weekly across 7 harnesses. Partners & sponsors                 Community sponsors: Mike Morgan · @jasonwu513 · @1anter · @massimotodaro · @meadmccabe Become a Sponsor · Sponsor Tiers · Sponsorship Program Jump to install ↓ ECC Your agent can write code, but ECC gives it a coordinated engineering system and toolbox: it plans before it builds, verifies changes with tests, reviews its own work from a fresh context, remembers what matters, and turns repeated wins into reusable skills and workflows. [安装/使用命令见下方] Instead of rebuilding that process in every prompt, you install it once and make it part of how your agent works. Optimize the context window. Persist everything else. ECC is MIT licensed open source. It works best with Claude Code today, has a supported Codex sync path, and provides capability limited adapters for Cursor, OpenCode, Gemini, Zed, GitHub Copilot, Antigravity, Qwen, and other harnesses. See the support status matrix before assuming feature parity. Access to 67 agents, 281 skills, and 94 legacy command shims, plus hooks, rules, memory, continuous learning, and AgentShield security scanning. The ag