claude-codev1.0.0

API Design

@affaan-m⭐ 67.1k stars· last commit 7mo ago· 24 open issues

REST API design patterns for Claude Code — resource naming, status codes, versioning, and OpenAPI spec generation.

Choose how to use this skill

You do not need every option. Choose the path your AI client supports. The stable page stays the same; versioned files are immutable.

Adopt or update this skill from https://proskills.md/skills/api/api-design. First identify the installation path supported by this platform, detect whether it is already installed, compare the installed version with the latest stable release, show me what will change, and only then install or update it. If no native installer is available, use the complete package or source fallback described on the page.

1. Native installer

This listing has no registered native installer command. Use the complete package or source fallback below, depending on what your client supports.

Do not guess an installer command or replace an existing version without reviewing the diff.

2. Complete package recommended

Download the ZIP when available. It includes SKILL.md plus the references, security notes and version metadata.

No complete ProSkills package is published for this listing yet.

3. Prompt-only

Copy the prompt above when the agent can read the stable page or when you want to adopt the workflow without installing a skill.

Need only the instruction file?

Download SKILL.md only if your client requires a single file. The complete ZIP is safer for a full installation because it preserves the references and release context.

No path installs or executes anything by itself. Your agent still needs access to the project files. Before updating, compare the installed version and review the diff.

7.8/10

Verified

Mar 8, 2026

// RATINGS

⭐GitHub Stars

⭐⭐⭐⭐⭐ 67.1k on GitHubGitHub ↗

Very popular

🟢ProSkills ScoreAI Verified

7.8/10

📍

Not yet listed on ClawHub or SkillsMP

// README

Language: English | 繁體中文

Everything Claude Code

50K+ stars | 6K+ forks | 30 contributors | 6 languages supported | Anthropic Hackathon Winner

🌐 Language / 语言 / 語言

English | 简体中文 | 繁體中文 | 日本語

The performance optimization system for AI agent harnesses. From an Anthropic hackathon winner.

Not just configs. A complete system: skills, instincts, memory optimization, continuous learning, security scanning, and research-first development. Production-ready agents, hooks, commands, rules, and MCP configurations evolved over 10+ months of intensive daily use building real products.

Works across Claude Code, Codex, Cowork, and other AI agent harnesses.

The Guides

This repo is the raw code only. The guides explain everything.

Topic	What You'll Learn
Token Optimization	Model selection, system prompt slimming, background processes
Memory Persistence	Hooks that save/load context across sessions automatically
Continuous Learning	Auto-extract patterns from sessions into reusable skills
Verification Loops	Checkpoint vs continuous evals, grader types, pass@k metrics
Parallelization	Git worktrees, cascade method, when to scale instances
Subagent Orchestration	The context problem, iterative retrieval pattern

What's New

v1.8.0 — Harness Performance System (Mar 2026)

Harness-first release — ECC is now explicitly framed as an agent harness performance system, not just a config pack.
Hook reliability overhaul — SessionStart root fallback, Stop-phase session summaries, and script-based hooks replacing fragile inline one-liners.
Hook runtime controls — ECC_HOOK_PROFILE=minimal|standard|strict and ECC_DISABLED_HOOKS=... for runtime gating without editing hook files.
New harness commands — /harness-audit, /loop-start, /loop-status, /quality-gate, /model-route.
NanoClaw v2 — model routing, skill hot-load, session branch/search/export/compact/metrics.
Cross-harness parity — behavior tightened across Claude Code, Cursor, OpenCode, and Codex app/CLI.
997 internal tests passing — full suite green after hook/runtime refactor and compatibility updates.

v1.7.0 — Cross-Platform Expansion & Presentation Builder (Feb 2026)

Codex app + CLI support — Direct AGENTS.md-based Codex support, installer targeting, and Codex docs
frontend-slides skill — Zero-dependency HTML presentation builder with PPTX conversion guidance and strict viewport-fit rules
5 new generic business/content skills — article-writing, content-engine, market-research, investor-materials, investor-outreach
Broader tool coverage — Cursor, Codex, and OpenCode support tightened so the same repo ships cleanly across all major harnesses
992 internal tests — Expanded validation and regression coverage across plugin, hooks, skills, and packaging

v1.6.0 — Codex CLI, AgentShield & Marketplace (Feb 2026)

Codex CLI support — New /codex-setup command generates codex.md for OpenAI Codex CLI compatibility
7 new skills — search-first, swift-actor-persistence, swift-protocol-di-testing, regex-vs-llm-structured-text, content-hash-cache-pattern, cost-aware-llm-pipeline, skill-stocktake
AgentShield integration — /security-scan skill runs AgentShield directly from Claude Code; 1282 tests, 102 rules
GitHub Marketplace — ECC Tools GitHub App live at github.com/marketplace/ecc-tools with free/pro/enterprise tiers
30+ community PRs merged — Contributions from 30 contributors across 6 languages
978 internal tests — Expanded validation suite across agents, skills, commands, hooks, and rules

v1.4.1 — Bug Fix (Feb 2026)

Fixed instinct import content loss — parse_instinct_file() was silently dropping all content after frontmatter (Action, Evidence, Examples sections) during /instinct-import. Fixed by community contributor @ericcai0814 (#148, #161)

v1.4.0 — Multi-Language Rules, Installation Wizard & PM2 (Feb 2026)

Interactive installation wizard — New configure-ecc skill provides guided setup with merge/overwrite detection
PM2 & multi-agent orchestration — 6 new commands (/pm2, /multi-plan, /multi-execute, /multi-backend, /multi-frontend, /multi-workflow) for managing complex multi-service workflows
Multi-language rules architecture — Rules restructured from flat files into common/ + typescript/ + python/ + golang/ directories. Install only the languages you need
Chinese (zh-CN) translations — Complete translation of all agents, commands, skills, and rules (80+ files)
GitHub Sponsors support — Sponsor the project via GitHub Sponsors
Enhanced CONTRIBUTING.md — Detailed PR templates for each contribution type

v1.3.0 — OpenCode Plugin Support (Feb 2026)

Full OpenCode integration — 12 agents, 24 commands, 16 skills with hook support via OpenCode's plugin system (20+ event types)
3 native custom tools — run-tests, check-coverage, security-audit
LLM documentation — llms.txt for comprehensive OpenCode docs

v1.2.0 — Unified Commands & Skills (Feb 2026)

Python/Django support — Django patterns, security, TDD, and verification skills
Java Spring Boot skills — Patterns, securi

// HOW IT'S BUILT

TECHNOLOGY STACK

Docker

Shell

GitHub Actions

Node.js

This skill is built with Docker, Shell, GitHub Actions, Node.js. The repo includes a Node.js package, and includes automated tests.

KEY FILES

README.mdREADME.zh-CN.mdexamplestests

// REPO STATS

67.1k stars

24 open issues

Last commit: 7mo ago

// SHARE

Share on X Share on LinkedIn