How real projects configure their agents

43,652 repositories keep their own agent configuration in the open: a CLAUDE.md, a rules file, instructions for Copilot, a skill the project runs on itself. These are not mods to install. They are worth reading for what they reveal — what a maintainer thinks an agent gets wrong.

Building agents7,588Claude Code6,636Data and AI3,676Backend and APIs3,496Languages3,402Planning3,219Git and workflow3,187Code review2,745Testing2,374Memory and context2,364DevOps and cloud2,310Writing and docs2,309Research2,295Frontend2,261Security2,021Productivity1,715

All Claude Code31,998 Codex23,222 OpenCode22,170 GitHub Copilot3,550 Gemini CLI1,918 Cursor1,738 Windsurf137 Kiro80

Project Stars Configures Files Always loaded
zeta92/design-library-plugin Global Claude Code plugin — 58 brand design systems (Stripe, Linear, Vercel, etc.) always 10 Claude Code 1 1,503 tok
FujishigeTemma/semantic-scholar-mcp 10 Claude Code 2 646 tok
regenrek/oplink-mcp oplink.instructa.ai easy workflows for mcp tools 10 Claude Code, Codex, Cursor, OpenCode 12 29 tok
sam-ent/google-automation-mcp Google Workspace APIs for AI agents — Gmail, Drive, Sheets, Calendar, Docs, Forms, Tasks. 10 Gemini CLI 1 776 tok
QuangThai/vision-bridge-mcp 10 Codex, OpenCode 1 818 tok
jasnonaz/vibe-worldbuilding-mcp Vibe Worldbuilding 10 Claude Code 1 1,297 tok
rsp2k/mcp-pdf pypi.org 🔒 Secure FastMCP server for comprehensive PDF processing - text extraction, OCR, table ex 10 Claude Code 1 4,047 tok
antdv-next/skills Antdv Next Vue 3 component library skills. 10 Codex, OpenCode 1 609 tok
gwas-catalog/mcp ebi.ac.uk GWAS Catalog Model Context Protocol server, supporting natural language queries of associa 10 Codex, OpenCode 1 366 tok
godstale/ollama-mcp-tutorials 10 Claude Code 1 1,494 tok
ApocryphalWord/KindroidMCP 10 Claude Code 1 1,040 tok
kunal12203/token-counter-mcp Accurate Claude Code token counter MCP — tracks every input, output & cache token with USD 10 Claude Code 1 611 tok
premex-ab/phone-mcp 10 Claude Code, GitHub Copilot 2 5,546 tok
Aeven-AI/mcp-nanobanana mcp for nano banana using openrouter.ai 10 Codex, Gemini CLI, OpenCode 2 2,076 tok
Hint-Services/mcp-trello 10 Claude Code 1 819 tok
femto/mcp-chrome mcp-chrome 10 Claude Code, Codex, OpenCode 8 250 tok
jeweis/mcpcat mcp 10 Claude Code, Codex, OpenCode 2 2,012 tok
eliavamar/mcp-of-mcps 10 Claude Code 1 335 tok
karlost/FreeloMCP 10 Claude Code 1 1,167 tok
BrickDesignerNL/github-copilot-gpt-code-improver Custom Instruction for GitHub CoPilot to improve the output quality of the default GPT-mod 10 GitHub Copilot 1 1,329 tok
arkangelai/second-brain second-brain-web-ashen.vercel.app Local-first, AI-native knowledge management system. Markdown + QMD hybrid search + Obsidia 10 Codex, OpenCode 1 170 tok
usurahi-project/usurahi School-anime-inspired multi-agent development workflow with tmux, MCP, and role-driven col 10 Claude Code 2 914 tok
mollyretter/forward-deployed-engineer-toolkit opinionated tools for shipping AI into real-world domains 10 Claude Code 1 479 tok
miopea/swarm-legacy Swarm (legacy) — web dashboard + autopilot for AI coding agents. Superseded by miopea/swar 10 Claude Code 4 2,809 tok
GoPlasmatic/Orion docs.goplasmatic.io The declarative runtime for AI agents, workflows, microservices, and event processing. 10 Claude Code 1 11,297 tok
AkashGoenka/coldstart coldstartmcp.dev Self-maintaining and persistent codebase memory for AI coding agents — a deterministic AST 10 Claude Code 1 6,203 tok
spxrogers/agentsync agentsync.cc Sync AI coding-agent configs (Claude Code, OpenCode, Codex, and more) from one canonical, 10 Claude Code, Codex, OpenCode 3 12,439 tok
joshLong145/ambits visualize, and report code coverage within llm sessions 10 Codex, OpenCode 1 1,234 tok
tidymodels/skills skills.tidymodels.org Claude Code Skills for Tidymodels 10 Claude Code 2
tonydzi/claude-bible tonydzi.github.io Make Claude Code behave consistently across repos, sessions and humans: rules-as-files gov 10 Codex, OpenCode 1 864 tok
timwukp/agent-skills-best-practice 35 portable agent skills (Agent Skills spec) for Kiro & Claude Code: Scrum DevSecOps roles 10 Kiro 4 1,744 tok
Rul1an/assay getassay.dev Open evidence profile for MCP tool actions. Enforce configured tool-call policies and reco 10 Claude Code, Codex, OpenCode 3 7,506 tok
workingclass-ai/workingclass AI tools on the side of workers. Multilingual agent skill (Claude Code · Codex · Cursor) c 10 Codex, OpenCode 1 421 tok
netresearch/typo3-extension-upgrade-skill Agent Skill for systematically upgrading TYPO3 extensions to newer LTS versions | Claude C 10 Codex, OpenCode 1 662 tok
nuyoah-ai-works/open-nuyoah-skill Public, reusable Agent Skills: create exclusive white soft-block characters and generate a 10 Codex, OpenCode 1 536 tok
Lancetnik/slop-writer Claude Code skill that scrapes a Telegram channel into SQLite, answers analytics questions 10 Claude Code 3 2,963 tok
ponomr/thinking-toolkit 30 thinking models as one portable agent skill — Claude Code, Codex CLI, OpenClaw, and any 10 Codex, OpenCode 1 941 tok
agentic-lineage/lineage agenticlineage.vercel.app Package and share AI agent workflows, skills, agents, and policies across Claude Code, Cod 10 Claude Code, Codex, OpenCode 5 742 tok
e-t-y-b/etyb-skills etyb.ai ETYB — your AI engineering team as one open-source skill (/etyb). 14 specialists, 9 always 10 Claude Code, Codex, OpenCode 2 966 tok
lyr1cs/rein Multi-source cross-validated memory MCP server for AI agents (Rust, jieba CJK, local-first 10 Codex, OpenCode 1 17,034 tok
itallstartedwithaidea/MiniAgent googleadsagent.ai The Cowork Agent for Everything — trainable advertising AI + 14 platform MCP servers + age 10 Claude Code 1 438 tok
Postpartum-genushyacinthus29/dotnet-skills Teach AI agents modern .NET skills for ASP.NET Core, EF, Blazor, MAUI, and more with a gro 10 Claude Code, Codex, Gemini CLI, OpenCode 3 9,378 tok
edholofy/dojo.md dojo.md University for AI agents. 92 courses, 4400+ scenarios, any model via OpenRouter. Auto-trai 10 Claude Code 11 3,168 tok
footprintjs/hcifootprint footprintjs.github.io Turn a web app's interaction surface into a typed, traversable skill graph an LLM can plan 10 Claude Code 1 3,772 tok
redhuntlabs/wizard Build AI spells for what you do - a meta-builder that turns recurring tasks into reusable 10 Claude Code, Codex, Gemini CLI, OpenCode 3 1,340 tok
zander-zyx/claude-mini-hud zdking.com A lighter alternative to claude-hud's core features, limited to 7 lines. Built-in usage qu 10 Claude Code, Codex, OpenCode 2 2,695 tok
SawyerHan-AI/TideMind tidemind.ai A living second brain that connects everything you think with — your AI agents, your notes 10 Codex, OpenCode 1 3,307 tok
EvilFreelancer/secs SECS (SECurity aSsistant) turns an AI coding agent (Claude Code, Cursor, Codex) into an au 10 Claude Code, Codex, OpenCode 2 4,071 tok
freibergergarcia/phone-a-friend CLI relay for Claude Code, Codex, and OpenCode. Delegate to Antigravity, Claude, Codex, Ge 10 Claude Code, Codex, OpenCode 2 12,165 tok
Dometrain/getting-started-claude-code dometrain.com Source code for the "Getting Started: Claude Code" course 10 Claude Code 1