ECC
ecc.tools
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Quick Information
- Category:
- Coding
- Pricing:
- Freemium
- Platforms:
- Windows, macOS, Linux
- Free Plan:
- Yes
- Last Verified:
- September 2026
What Is ECC?
ECC (short for "Everything Claude Code") is a cross-harness agent operating system unifying AI coding assistant configurations — skills, instincts, memory, and security practices — into a single modular framework that works across Claude Code, Codex, Cursor, OpenCode, Gemini, Zed, GitHub Copilot, and other AI coding harnesses. It has become the most widely adopted agent configuration framework available, with over 200,000 GitHub stars, 31,000+ forks, and 170+ contributors.
Its cross-harness design addresses a genuinely real problem in the fast-moving AI coding tool landscape: rather than configuring skills, memory, and security practices separately for each AI coding assistant you use, ECC provides one modular configuration framework that works across Claude Code (its primary, most fully-supported target), a supported Codex sync path, and capability-limited adapters for several other harnesses. Pricing runs a free tier (public repo analysis, 10 runs/month, 200 commits/run), Pro at $19/seat/month (private repos, 50 analyses/seat/month, 1,000 commits/run, priority support), and custom Enterprise with unlimited access, SSO, and custom rules.
It's aimed at developers using multiple AI coding assistants who want unified skill, memory, and security configuration across all of them rather than maintaining separate setups for each tool. See our Coding tools directory for the AI coding assistants ECC integrates with, like Claude Code and Cursor.
What Can You Use ECC For?
Cross-harness AI configuration
Unifies skill, memory, and security configuration across multiple AI coding assistants.
AI agent skill management
Manages reusable skills and instincts across different coding harnesses.
Multi-tool AI coding workflows
Supports developers using multiple AI coding tools with one unified configuration.
ECC Features
- Cross-harness compatibility — Works across Claude Code, Codex, Cursor, OpenCode, Gemini, Zed, and GitHub Copilot.
- Modular skill framework — Provides reusable skills and configuration modules across different AI coding tools.
- Memory and instinct management — Manages persistent memory and behavioral patterns for AI coding agents.
- Security-first configuration — Incorporates security practices into the shared configuration framework.
Who Is ECC For?
- Developers using multiple AI coding assistants — Gets unified skill and configuration management instead of maintaining separate setups per tool.
- Teams standardizing AI coding practices — Applies consistent security and configuration standards across different harnesses.
ECC Pros & Limitations
What We Like
- Massive community adoption — over 200,000 GitHub stars and 170+ contributors
- Genuinely solves cross-tool configuration fragmentation for developers using multiple AI coding assistants
- Free tier available for public repo analysis before committing to a paid plan
Limitations
- Full-depth support is strongest for Claude Code, with other harnesses receiving capability-limited adapters
- Private repo analysis and higher usage limits require the paid Pro tier
- Fast-moving space means ECC and its supported harnesses will likely keep evolving quickly
ECC Pricing
| Plan | Price | Main Features |
|---|---|---|
| Free | $0 | Public repo analysis, 10 runs/month, 200 commits/run |
| Pro | $19/seat/month | Private repos, 50 analyses/seat/month, 1,000 commits/run, priority support |
| Enterprise | Custom | Unlimited access, SSO, custom rules, dedicated onboarding |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #17
- Overall Score:
- 91.4/100
- Monthly Users:
- –
- Rank Change:
- ▲ 8
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by ECC or its company. How Our Rankings Work
Frequently Asked Questions
What does ECC stand for?
"Everything Claude Code," reflecting its origin as a Claude Code configuration framework, since expanded to other harnesses.
Which AI coding tools does ECC support?
Claude Code (primary), Codex (supported sync), and capability-limited adapters for Cursor, OpenCode, Gemini, Zed, and GitHub Copilot.
How much does ECC cost?
A free tier is available, with Pro at $19/seat/month and custom Enterprise pricing.
How popular is ECC?
Over 200,000 GitHub stars, 31,000+ forks, and 170+ contributors, making it the most widely adopted agent configuration framework.
Our Take
ECC's massive community adoption — 200,000+ GitHub stars — reflects a genuine, widely-felt need for unified AI coding assistant configuration across multiple tools.
Its strongest support remains Claude Code specifically, so developers relying heavily on other harnesses should check the current adapter capability level before assuming full feature parity.
ECC Alternatives
ECC Comparisons
Ready to try ECC?
Visit the official website to get started.
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