everything-claude-code-harness

Everything Claude Code (ECC) is a production-ready performance optimization system designed to enhance AI coding agents like Claude Code, Cursor, Codex, OpenCode, and Antigravity. It addresses the challenge of maximizing AI agent productivity by providing a comprehensive harness that includes specialized subagents, reusable skills, custom slash commands, memory-persisting hooks, security scanning, and language-specific rules. Evolved from over 10 months of real-world daily use, ECC transforms basic AI coding assistants into powerful, context-aware development partners.

The system offers a rich set of features organized into modular components: specialized subagents for planning and architecture, dozens of slash commands for common workflows, lifecycle hooks that maintain context across sessions, security scanning tools, and carefully crafted rules for TypeScript, Python, Go, and Swift. Key capabilities include research-first development workflows, multi-agent orchestration for complex tasks, PM2 process management integration, quality gates, and intelligent model routing. The hook system provides runtime controls for strictness profiles, allowing developers to balance guidance with flexibility.

ECC is ideal for professional developers and teams who rely on AI coding assistants for production work. It's particularly valuable for those working on complex codebases requiring architectural planning, security-conscious applications needing automated scanning, projects with specific language conventions, and teams wanting to standardize AI agent behavior across members. Whether you're building a multi-tenant SaaS platform, implementing OAuth flows, or simply want your AI assistant to remember context between sessions, ECC provides the infrastructure to make AI-assisted development more reliable and productive.