Sandbox
19 repos for design · Codex · ResearchClear
tigerless-labs/
design-harness

Feed your agent papers and half-formed ideas — it links them into a system design you can defend. Markdown keeps the record; a visual canvas makes it readable. An Agent Skill for Claude Code & any SKILL.md-compatible agent.

217
appautomaton/
agent-designer

Portable SKILLs workspace for Claude Code, Codex, and Gemini — issue-driven workflows and cross-agent collaboration via bridge scripts with session continuity.

130
DY-2026/
GameDesignOS

Local-first game design OS for AI agents: turn sessions into evidence, experiments, reviewable decisions, and durable project memory—Human Gates and rollback.

385
mixelpixx/
Konnect

AI-assisted PCB design for KiCAD 10. Native KiCAD plugin — a single Rust binary exposing 217 schematic, layout, routing, placement, design-review, and manufacturing tools to Claude, or the LLM of your choosing

608
hufeng173/
kunpeng-skill

Kunpeng-Skill is a powerful multimodal distillation toolkit that transforms high-value insights from repositories, websites, UIs, videos, images, and documents into reusable methodologies, model-agnostic regeneration specifications, and more.

54

Architecture Deep Research: deep research for strategic system design decisions.

106
wquguru/
harness-books
wquguru/harness-booksTutorials & Guides

📚 Two books on harness engineering — the design philosophies behind Claude Code & Codex: constraints, query loops, context governance, multi-agent verification. harness-books.agentway.dev

3.1k

13 installable skills for Claude Code, OpenAI Codex, and Hermes, for finding your unknowns before they get expensive: blindspot pass, brainstorms, interviews, references, plans, notes, pitches, a merge quiz, plus a context audit, agent interface design, and progressive disclosure.

328

Nia is a context-augmentation layer for agents, primarily designed for coding agents. It provides them with an up-to-date knowledge base and improves their performance by 27%.

74
greyhaven-ai/
autocontext

a recursive self-improving harness designed to help your agents (and future iterations of those agents) succeed on any task

1.3k
naderelewa/
Product-to-Prod

AI product management skills and plugin for Claude Code, Cowork, Codex & other AI agents: evidence-tagged PRDs, specs, requirements, RICE prioritization, backlog and roadmap scoring, product strategy, GTM launch plans, release verification, benchmark packs, UX/UI design prompts for web + mobile apps. Every claim sourced or labelled unsourced.

42

Extracted system prompts from Anthropic - Claude Fable 5.1, Opus 5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.

65k
1 add
adityaarsharma/
librecrawl-technical-seo-audit-mcp

The AI-native technical SEO crawler. Open-source MCP server for Claude / Cursor / Codex — 37 tools, 50+ checks, unlimited pages, WAF detection, ephemeral by design. Built on LibreCrawl. MIT.

39
fal-ai-community/
genmedia-cli

Agent-first CLI for fal.ai — search, run, and manage 1000+ generative AI models

70
SJY051/
music-composition

Modular music-composition skill for AI assistants — harmony, melody, form, 24+ genres.

82
neuromechanist/
research-skills

A skill marketplace for academic research: from project management to literature review, making figures and writing reports and grants.

45

🐬DeepChat - A smart assistant that connects powerful AI to your personal world

6.3k
yanliudesign/
job-description-skill

Claude skill that reads a job description and hands back an HTML report — match score, resume tailor, interview predictor, and a should-I-apply verdict.

98