affaan-m/everything-claude-code
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Everything Claude Code (ECC) by Affaan Mustafa is the most-starred meta-system for AI coding agent harnesses on GitHub. Ships skills, instincts, memory optimization, security scanning, and research-first patterns that work across Claude Code, Codex, Cursor, OpenCode, Gemini CLI, and Zed.
Our Review
Everything Claude Code (ECC) is the most-starred meta-system for AI coding agent harnesses on GitHub -- 186,000 stars and 28,800 forks in four months as of May 2026. Created by Affaan Mustafa (affaan-m on GitHub), an Anthropic Hackathon winner, and released under MIT, ECC ships skills, instincts, memory optimization, continuous learning, security scanning, and research-first development patterns that work across Claude Code, Codex, Cursor, OpenCode, Gemini CLI, Zed, and GitHub Copilot.
What Everything Claude Code provides:
- •Cross-harness skill library production-ready agents, skills, hooks, rules, MCP configurations, and legacy command shims evolved over 10+ months of daily use.
- •Memory optimization patterns for keeping agent context lean without losing the threads of multi-day work.
- •Agent instincts pre-tuned defaults for common decision points so the agent does not re-derive judgment every run.
- •Security scanning ecc-agentshield npm package provides agent-level security hooks for production agentic workflows.
- •Research-first development workflow patterns that teach agents to check primary sources before acting.
- •GitHub App install 150+ installs of the official ecc-tools GitHub App for repo-level integration.
- •Hermes operator story ECC v2.0.0 introduces the public Hermes layer for cross-harness operator scenarios.
Everything Claude Code ecosystem:
- •ecc.tools official product homepage with documentation and pricing.
- •ecc-universal npm package core skill bundle distributed via npm with weekly download stats.
- •ecc-agentshield npm package security scanning hooks for agent runs.
- •ECC Pro paid tier at $19 per seat per month for private repository support and GitHub App.
- •Hermes setup guide ECC v2.0.0-rc.1 introduces cross-harness operator patterns documented under docs/HERMES-SETUP.md.
Getting started:
Browse github.com/affaan-m/everything-claude-code and pick the skills, instincts, or MCP configs relevant to your stack. Install ecc-universal from npm for the core skill bundle. For security hooks add ecc-agentshield. For repo-level integration, install the ecc-tools GitHub App from the marketplace. Full docs at ecc.tools.
Limitations:
ECC is one person's evolved patterns -- excellent as a starting point, but opinionated about workflow style; teams with established harness conventions may want to adopt selectively rather than wholesale. Private repository support is paywalled (ECC Pro, $19 per seat per month). The cross-harness compatibility is broad but uneven -- some patterns work better in Claude Code or Codex than in Cursor or Zed. As a fast-evolving project (12 releases in four months), upstream patterns can shift between minor versions.
Our Verdict
Everything Claude Code in 2026 is the most-starred meta-system for AI agent harnesses on GitHub, with 186,000 stars in four months and the credibility of an Anthropic Hackathon win behind it. Built by Affaan Mustafa and released MIT, ECC is one developer's evolved patterns from 10+ months of daily agentic coding, packaged for cross-harness reuse.
For Vibe Builders using Claude Code or Cursor, ECC is the fastest way to inherit a production-tested set of skills, instincts, and memory patterns without spending months tuning them yourself. The ecc-universal npm package drops the core into any agent harness; pick what you need, ignore the rest.
For Developers building agent products, ECC is interesting both as a reference (study how a strong solo operator structures agent patterns) and as a dependency (use ecc-agentshield for security hooks in your own product). The Hermes operator story in ECC v2.0.0 is worth following as cross-harness orchestration matures.
Skip ECC if your team prefers minimal, opinionated-by-you agent setups -- ECC is intentionally opinionated. Skip if you only use one agent harness and want patterns optimized purely for that harness (the official anthropics/skills or openai/skills may be a tighter fit). For pure security scanning of agent outputs, ecc-agentshield can be adopted standalone without the rest of ECC.
Frequently Asked Questions
What is Everything Claude Code (ECC)?
Everything Claude Code is a cross-harness meta-system for AI coding agents, built by Affaan Mustafa (affaan-m on GitHub, an Anthropic Hackathon winner). It ships skills, instincts, memory optimization, security scanning hooks, and research-first development patterns that work across Claude Code, Codex, Cursor, OpenCode, Gemini, Zed, and GitHub Copilot. As of May 2026 it has 186,000 GitHub stars under MIT.
Is ECC free?
The core repository and npm packages (ecc-universal, ecc-agentshield) are free and open source under MIT. ECC Pro is a paid tier at $19 per seat per month that adds private repository support and the official ecc-tools GitHub App for repo-level integration. Sponsorship through GitHub Sponsors starts at $5 per month for individual supporters of the project.
Which AI coding agents does ECC support?
ECC is designed to work across Claude Code, OpenAI Codex, Cursor, OpenCode, Gemini CLI, Zed, GitHub Copilot, and other AI agent harnesses. Compatibility is uneven -- some patterns map directly into Claude Code or Codex, others need light adaptation for Cursor or Zed. The cross-harness architecture docs at docs/architecture/cross-harness.md cover the integration patterns per agent.
What is the Hermes operator story?
ECC v2.0.0-rc.1 introduces a public Hermes operator layer on top of the reusable skill library. The Hermes setup guide (docs/HERMES-SETUP.md) walks through cross-harness operator scenarios where one operator drives multiple agent harnesses with shared context. This is distinct from the Hermes Agent project; the name reflects the operator pattern, not a shared codebase.
Who is Affaan Mustafa?
Affaan Mustafa is the creator and primary maintainer of Everything Claude Code, an Anthropic Hackathon winner with a background institutionalizing prediction markets at Ito-Markets. He maintains a personal blog at affaanmustafa.com and runs ecc.tools as the commercial home for ECC Pro. The repository has 30+ contributors with Affaan as the primary author (1,371 of the first commits).
What is everything-claude-code?
Everything Claude Code (ECC) by Affaan Mustafa is the most-starred meta-system for AI coding agent harnesses on GitHub. Ships skills, instincts, memory optimization, security scanning, and research-first patterns that work across Claude Code, Codex, Cursor, OpenCode, Gemini CLI, and Zed.
How do I install everything-claude-code?
Visit the GitHub repository at https://github.com/affaan-m/everything-claude-code for installation instructions.
What license does everything-claude-code use?
everything-claude-code uses the MIT license.
What are alternatives to everything-claude-code?
Explore related tools and alternatives on My AI Guide.
Open source & community-verified
MIT licensed: free to use in any project, no strings attached. 187,664 developers have starred this, meaning the community has reviewed and trusted it.
Reviewed by My AI Guide for relevance, quality, and active maintenance before listing.
Topics