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A skill from the ECC (harness-native operator system for agentic work) that provides React and Next.js frontend patterns. Part of a comprehensive system with 60+ specialized subagents, skills, instincts, memory optimization, and security scanning, working across Claude Code, Codex, Cursor, Gemini, and other AI agent harnesses.

A skill from the ECC (harness-native operator system) that provides API, database, and caching patterns for backend development. ECC is a comprehensive agent harness system with 232 skills, 60 agents, and hooks for Claude Code, Codex, Cursor, and other AI coding assistants, featuring meta-cognition, continuous learning, and security scanning.

Part of ECC, the harness-native operator system for agentic work, providing frontend design direction guidance within a comprehensive skills framework covering React, Next.js patterns, design systems, and cross-platform development across Claude Code, Codex, Cursor, and other AI agent harnesses.

Provides REST API design patterns including pagination, error response conventions, and best practices as part of the ECC (Everything Claude Code) cross-harness operator system for agentic development workflows.

A skill for generating, auditing, and scoring design systems across 10 visual dimensions, detecting AI-generated design patterns ("AI slop"), and producing design tokens, preview pages, and consistency reports.

A comprehensive guide to idiomatic Python patterns covering type hints, error handling, context managers, comprehensions, generators, dataclasses, decorators, concurrency, package organization, and performance optimization best practices.

A skill for creating zero-dependency, animation-rich HTML presentations that run entirely in the browser, with support for PowerPoint conversion, visual style exploration, viewport-safe layouts, and keyboard/touch/wheel navigation.

Part of the ECC (Everything Claude Code) harness-native operator system, providing prompt optimization workflows for agentic development across 12+ language ecosystems with skills, rules, hooks, and continuous learning.

Produces thorough, cited research reports by searching multiple web sources using Firecrawl and Exa MCP tools, with multi-angle query planning, source cross-referencing, and structured report generation with inline citations.

Docker and Docker Compose best practices for local development, covering multi-stage Dockerfiles, service discovery, volume strategies, container security hardening, secret management, and debugging with common commands.