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Agent Skills

Agent-Skills.md is a agent skills marketplace, to find the right agent skills for you.

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raffle-winner-picker

Picks random winners from lists, spreadsheets, or Google Sheets for giveaways, raffles, and contests. Ensures fair, unbiased selection with transparency.

composiohq
composiohq
58665

skill-creator

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations.

composiohq
composiohq
58665

skill-installer

Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos).

composiohq
composiohq
58665

skill-share

A skill that creates new Claude skills and automatically shares them on Slack using Rube for seamless team collaboration and skill discovery.

composiohq
composiohq
58665

slack-gif-creator

Toolkit for creating animated GIFs optimized for Slack, with validators for size constraints and composable animation primitives. This skill applies when users request animated GIFs or emoji animations for Slack from descriptions like "make me a GIF for Slack of X doing Y".

composiohq
composiohq
58665

spreadsheet-formula-helper

Write and debug spreadsheet formulas (Excel/Google Sheets), pivot tables, and array formulas; translate between dialects; use when users need working formulas with examples and edge-case checks.

composiohq
composiohq
58665

support-ticket-triage

Triage customer support tickets/emails/chats into categories, priority, and next action; draft responses and create reproducible steps; use for Zendesk/Intercom/Help Scout exports or pasted threads.

composiohq
composiohq
58665

tailored-resume-generator

Analyzes job descriptions and generates tailored resumes that highlight relevant experience, skills, and achievements to maximize interview chances

composiohq
composiohq
58665

theme-factory

Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.

composiohq
composiohq
58665

youtube-downloader

Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3.

composiohq
composiohq
58665

webapp-testing

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

composiohq
composiohq
58665

brand-guidelines

Applies OpenAI's brand colors and typography to any artifact that should match the Codex/OpenAI look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.

composiohq
composiohq
58665

canvas-design

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

composiohq
composiohq
58665

changelog-generator

Automatically creates user-facing changelogs from git commits by analyzing commit history, categorizing changes, and transforming technical commits into clear, customer-friendly release notes. Turns hours of manual changelog writing into minutes of automated generation.

composiohq
composiohq
58665

skillforge

Intelligent skill router and creator. Analyzes ANY input to recommend existing skills, improve them, or create new ones. Uses deep iterative analysis with 11 thinking models, regression questioning, evolution lens, and multi-agent synthesis panel. Phase 0 triage ensures you never duplicate existing functionality.

tripleyak
tripleyak
58368

pretty-mermaid

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imxv
imxv
58225

pretty-mermaid

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imxv
imxv
58125

Preserving Productive Tensions

Recognize when disagreements reveal valuable context, preserve multiple valid approaches instead of forcing premature resolution

obra
obra
580131

Brainstorming Ideas Into Designs

Interactive idea refinement using Socratic method to develop fully-formed designs

obra
obra
580131

Root Cause Tracing

Systematically trace bugs backward through call stack to find original trigger

obra
obra
580131

Verification Before Completion

Run verification commands and confirm output before claiming success

obra
obra
580131

Executing Plans

Execute detailed plans in batches with review checkpoints

obra
obra
580131

Collision-Zone Thinking

Force unrelated concepts together to discover emergent properties - "What if we treated X like Y?"

obra
obra
580131

Dispatching Parallel Agents

Use multiple Claude agents to investigate and fix independent problems concurrently

obra
obra
580131

Using Git Worktrees

Create isolated git worktrees with smart directory selection and safety verification

obra
obra
580131

Subagent-Driven Development

Execute implementation plan by dispatching fresh subagent for each task, with code review between tasks

obra
obra
580131

When Stuck - Problem-Solving Dispatch

Dispatch to the right problem-solving technique based on how you're stuck

obra
obra
580131

Finishing a Development Branch

Complete feature development with structured options for merge, PR, or cleanup

obra
obra
580131

Getting Started with Skills

Skills wiki intro - mandatory workflows, search tool, brainstorming triggers

obra
obra
580131

Condition-Based Waiting

Replace arbitrary timeouts with condition polling for reliable async tests

obra
obra
580131

Tracing Knowledge Lineages

Understand how ideas evolved over time to find old solutions for new problems and avoid repeating past failures

obra
obra
580131

Test-Driven Development (TDD)

Write the test first, watch it fail, write minimal code to pass

obra
obra
580131

Testing Anti-Patterns

Never test mock behavior. Never add test-only methods to production classes. Understand dependencies before mocking.

obra
obra
580131

Code Review Reception

Receive and act on code review feedback with technical rigor, not performative agreement or blind implementation

obra
obra
580131

Remembering Conversations

Search previous Claude Code conversations for facts, patterns, decisions, and context using semantic or text search

obra
obra
580131

Testing Skills With Subagents

RED-GREEN-REFACTOR for process documentation - baseline without skill, write addressing failures, iterate closing loopholes

obra
obra
580131

Sharing Skills

Contribute skills back to upstream via branch and PR

obra
obra
580131

Pulling Updates from Skills Repository

Sync local skills repository with upstream changes from obra/superpowers-skills

obra
obra
580131

Scale Game

Test at extremes (1000x bigger/smaller, instant/year-long) to expose fundamental truths hidden at normal scales

obra
obra
580131

Gardening Skills Wiki

Maintain skills wiki health - check links, naming, cross-references, and coverage

obra
obra
580131

Systematic Debugging

Four-phase debugging framework that ensures root cause investigation before attempting fixes. Never jump to solutions.

obra
obra
580131

Requesting Code Review

Dispatch code-reviewer subagent to review implementation against plan or requirements before proceeding

obra
obra
580131

Defense-in-Depth Validation

Validate at every layer data passes through to make bugs impossible

obra
obra
580131

Inversion Exercise

Flip core assumptions to reveal hidden constraints and alternative approaches - "what if the opposite were true?"

obra
obra
580131

Meta-Pattern Recognition

Spot patterns appearing in 3+ domains to find universal principles

obra
obra
580131

Writing Plans

Create detailed implementation plans with bite-sized tasks for engineers with zero codebase context

obra
obra
580131

Writing Skills

TDD for process documentation - test with subagents before writing, iterate until bulletproof

obra
obra
580131

Simplification Cascades

Find one insight that eliminates multiple components - "if this is true, we don't need X, Y, or Z"

obra
obra
580131

logging-best-practices

Logging best practices focused on wide events (canonical log lines) for powerful debugging and analytics

boristane
boristane
577104

claimable-postgres

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neondatabase
neondatabase
577104

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Adoption

Agent Skills are supported by leading AI development tools.

FAQ

Frequently asked questions about Agent Skills.

01

What are Agent Skills?

Agent Skills are reusable, production-ready capability packs for AI agents. Each skill lives in its own folder and is described by a SKILL.md file with metadata and instructions.

02

What does this agent-skills.md site do?

Agent Skills is a curated directory that indexes skill repositories and lets you browse, preview, and download skills in a consistent format.

03

Where are skills stored in a repo?

By default, the site scans the skills/ folder. You can also submit a URL that points directly to a specific skills folder.

04

What is required inside SKILL.md?

SKILL.md must include YAML frontmatter with at least name and description. The body contains the actual guidance and steps for the agent.

05

How can I submit a repo?

Click Submit in the header and paste a GitHub URL that points to a skills folder. We’ll parse it and add any valid skills to the directory.