affaan-m / ECC

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> [!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.
## Install with Claude Code
Use the guided setup or native plugin commands. Both install the same `ecc@ecc` plugin. Choose one and do not stack a full manual Claude install on top.
 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 
 Past sponsors: Atlas Cloud · Mike Morgan (inactive) 
 Community sponsors: @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.
 [code] 
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 native Codex and Qoder plugin paths, 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 71 agents, 311 skills, and 97 legacy command shims, plus hooks, rules, memory, continuous learning, and AgentShield security scanning. The agents are specialized for planning, review, build repair, security, architecture, and domain work.
| Included | Count | What it gives you |
| ---------------- | ----------: | ------------------------------------------------------------------------------------ |
| Agents | 71 agents | Planning, review, build repair, security, architecture, and domain work |
| Skills | 311 skills | TDD, research, security, docs, frontend, data, ML, operations, and more |
| Commands | 97 commands | Convenient entry points while ECC moves to a skills-first surface |
| Hooks and memory | Runtime | Enforcement, session summaries, continuous learning, instincts, and context controls |
| Rules | Selective | Always-loaded standards you choose by language