Everything for Codex

Skills, prompts, AGENTS.md files and MCP servers that Codex reads. Skills are shared with Claude Code; the rest is Codex-native. 414,595 indexed, measured the same four ways as everything else here.

dify AGENTS.md

73

langgenius/dify

Instructions file CodexOpenCode

AGENTS.md instructions for langgenius/dify, covering agents.md and repository gotchas.

154k 2d ago A 183 tokens

docs-langchain

74

langchain-ai/langchain

MCP server Claude CodeCodexCursor +2

MCP server "docs-langchain", hosted remotely at docs.langchain.com, as configured in langchain-ai/langchain.

5 145k 2d ago A tokens not measured original MIT

reference-langchain

75

langchain-ai/langchain

MCP server Claude CodeCodexCursor +2

MCP server "reference-langchain", hosted remotely at reference.langchain.com, as configured in langchain-ai/langchain.

145k 2d ago A tokens not measured original MIT

langchain AGENTS.md

76

langchain-ai/langchain

Instructions file CodexOpenCode

Instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

145k 2d ago A 4,345 tokens original MIT

Command Development

77

anthropics/claude-code

Skill Claude CodeCodex

This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash…

144k +180 yesterday A 99 tokens

Hook Development

78

anthropics/claude-code

Skill Claude CodeCodex

This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDEPLUGINROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop…

144k +180 yesterday A 117 tokens

Skill Development

79

anthropics/claude-code

Skill Claude CodeCodex

This skill should be used when the user wants to "create a skill", "add a skill to plugin", "write a new skill", "improve skill description", "organize skill content", or needs guidance on skill structure, progressive disclosure, or skill development best practices for Claude Code plugins.

144k +180 yesterday A 63 tokens

next.js AGENTS.md

80

vercel/next.js

Instructions file CodexOpenCode

Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

142k 2d ago A 7,296 tokens original MIT

vercel/next.js

Skill Claude CodeCodex

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

142k 2d ago A 95 tokens original MIT

vercel/next.js

Skill Claude CodeCodex

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…

142k 2d ago A 170 tokens original MIT

vercel/next.js

Skill Claude CodeCodex

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…

142k 2d ago A 103 tokens original MIT

ripienaar/free-for-dev

Instructions file CodexOpenCode

AGENTS.md instructions for ripienaar/free-for-dev: This repository does not accept AI edited contributions.

136k 2d ago A 78 tokens

Shubhamsaboo/awesome-llm-apps

Skill Claude CodeCodex

Reconstructs why code exists from local git history, including the introducing commit, later changes, current authors, repeated companion files, and likely intent. Use when the user asks "why does this code exist", "who wrote this function and why", or to "explain the history of this function" before a rewrite…

135k 2d ago A 82 tokens original Apache-2.0

project-graveyard

86

Shubhamsaboo/awesome-llm-apps

Skill Claude CodeCodex

Scans the developer's machine for dead side projects, autopsies each one from its git history (died at the payments wall, killed by a newer project, finished but never shipped), surfaces their personal death patterns, and picks the corpse most worth resurrecting — then helps ship it. Use when the user mentions…

135k 2d ago A 127 tokens original Apache-2.0

mcp-apps-builder

87

Shubhamsaboo/awesome-llm-apps

Skill Claude CodeCodex

MANDATORY for ALL MCP server work - mcp-use framework best practices and patterns. READ THIS FIRST before any MCP server work, including: Creating new MCP servers Modifying existing MCP servers (adding/updating tools, resources, prompts, widgets) Debugging MCP server issues or errors Reviewing MCP server code for…

135k 2d ago A 139 tokens original Apache-2.0

shadcn

88

Shubhamsaboo/awesome-llm-apps

MCP server Claude CodeCodexCursor +2

Add components to your apps. Runs locally from the shadcn npm package.

135k 2d ago A tokens not measured original Apache-2.0

github/spec-kit

Skill Claude CodeCodex

Add a community extension to the Spec Kit catalog from a GitHub issue submission. USE FOR: processing extension submission issues, validating catalog entries, updating catalog.community.json and docs/community/extensions.md, creating PRs. DO NOT USE FOR: creating new extensions from scratch, or first-party extension…

132k 4d ago A 63 tokens original MIT

spec-kit AGENTS.md

90

github/spec-kit

Instructions file CodexOpenCode

Instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

132k 4d ago A 7,040 tokens original MIT

gstack AGENTS.md

91

garrytan/gstack

Instructions file CodexOpenCode

Instructions for garrytan/gstack, covering gstack — ai engineering workflow, available skills, plan-mode reviews, implementation + review and release + deploy.

130k 3d ago C 1,962 tokens original MIT

design-review

92

garrytan/gstack

Skill Claude CodeCodex

Designer's eye QA: finds visual inconsistency, spacing issues, hierarchy problems, AI slop patterns, and slow interactions — then fixes them. (gstack).

130k 3d ago A 36 tokens original MIT

retro

94

garrytan/gstack

Skill Claude CodeCodex

Weekly engineering retrospective. (gstack).

130k 3d ago A 10 tokens original MIT

design

95

nextlevelbuilder/ui-ux-pro-max-skill

Skill Claude CodeCodex

Comprehensive design skill: brand identity, design tokens, UI styling, logo generation (55 styles, Gemini or Atlas Cloud AI), corporate identity program (50 deliverables, CIP mockups), HTML presentations (Chart.js), banner design (22 styles, social/ads/web/print), icon design (15 styles, SVG, Gemini 3.1 Pro), social…

123k 5d ago A 144 tokens original MIT

ui-styling

96

nextlevelbuilder/ui-ux-pro-max-skill

Skill Claude CodeCodex

Create beautiful, accessible user interfaces with shadcn/ui components (built on Radix UI + Tailwind), Tailwind CSS utility-first styling, and canvas-based visual designs. Use when building user interfaces, implementing design systems, creating responsive layouts, adding accessible components (dialogs, dropdowns…

123k 5d ago A 90 tokens original MIT