affaan-m-ecc

[!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.

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

Community sponsors: Mike Morgan · @jasonwu513 · @1anter · @massimotodaro · @meadmccabe

Become a Sponsor · Sponsor Tiers · Sponsorship Program

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.

plan -> test -> implement -> review -> verify -> remember -> improve

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 68 agents, 292 skills, and 94 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	68 agents	Planning, review, build repair, security, architecture, and domain work
Skills	292 skills	TDD, research, security, docs, frontend, data, ML, operations, and more
Commands	94 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 or project
AgentShield	Included	Scanning for prompts, hooks, MCP config, permissions, secrets, and agent files

Install ECC

[!IMPORTANT] ECC 2.2 includes guided package setup for Claude Code, Codex, and Kimi Code. The universal package requires Node.js 18 or newer. Claude plugin setup also requires Git and Claude Code 2.1 or newer on PATH.

Recommended: universal guided setup

For Claude Code plugin setup, updates, scope changes, and hook-profile changes:

npx ecc-universal@2.2.1 setup

If npm reports a version or cache error, confirm the registry version before retrying:

npm view ecc-universal version

ECC 2.2 supports the same guided setup through modern package runners:

Package runner	Guided setup command
npm / npx	npx ecc-universal@2.2.1 setup
pnpm	pnpm dlx ecc-universal@2.2.1 setup
Yarn 2+	yarn dlx ecc-universal@2.2.1 setup
Bun	bunx ecc-universal@2.2.1 setup

The examples select the published ECC 2.2.1 release, matching this repository's release version. A version pin is not a security audit or an integrity check. Review the release source and registry integrity before running package code; use a reviewed checkout for unreleased changes.

Yarn Classic 1 does not provide yarn dlx; use npx, install the package globally, or upgrade Yarn for a temporary one-shot run.