Claude Skills
The open format is called Agent Skills and works in Claude Code, Codex, Cursor and other agents — most people know it as Claude Skills.
Every Agent Skill we could find on GitHub, deduplicated by content. 79 341 files from 1 736 authors, of which 61 700 are unique — the rest is the same skill repackaged into someone else's repository. For each one: what it weighs in tokens, whether it ships runnable scripts, and which MCP servers it needs.
Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.
Ask which skill or flow fits your situation. A router over the skills in this repo.
Configure this repo for the engineering skills — set up its issue tracker, triage label vocabulary, and domain doc layout. Run once before first use of the other engineering skills.
Break a plan, spec, or PRD into independently-grabbable issues on the project issue tracker using tracer-bullet vertical slices.
Break a plan, spec, or the current conversation into a set of tracer-bullet tickets, each declaring its blocking edges, published to the configured tracker — edges as text in one file per ticket locally, or native blocking links on a real tracker.
Compact the current conversation into a handoff document for another agent to pick up.
Plan a huge chunk of work — more than one agent session can hold — as a shared map of decision tickets on your issue tracker, and resolve them one at a time until the way to the destination is clear.
Deploy fast-agent MCP Servers to Hugging Face Spaces using Docker. Use when the user wants to deploy an "agent card" as an MCP Server. Includes templates and CLI commands for deploying agent cards with custom tools to HF Spaces.
> Use this skill when the user wants a polished, shareable, source-grounded, self-contained HTML artifact in the Birch visual system for engineering, product, planning, review, status, incident, process, codebase, data, or benchmark communication. Trigger for one-pagers, visual summaries, reports, dashboards, module/process explainers, implementation plans, design-direction comparisons, PR/change writeups, findings-first code reviews, incident/status reports, briefing decks, flow diagrams, numeric/data briefs, model/run/token/ time/cost reports, and design-system references. Do not use it for editing production web apps, React/Vue components, or ordinary chat answers.
Create a polished social demo video (MP4, 4:3, ~10s) for any Hugging Face Space with the space-demo-kit renderer. Use whenever the user asks for a demo, promo, showcase, or social video of a HF Space or model. Covers template selection (i2v, t2v, edit, avatar, a2a, gallery, vqa), manifest schema, live asset capture, rendering, verification, and delivery.
Teaching instructions for Module 5 (Authentication and Authorization) — use when module_id is module-5
Teaching instructions for Module 6 (Deepagents CLI) — use when module_id is module-6
Teaching instructions for Module 4 (Storage) — use when module_id is module-4
Teaching instructions for Module 2 (Using your deployment) — use when module_id is module-2
Teaching instructions for Module 3 (Dashboard) — use when module_id is module-3
Teaching instructions for Module 1 (LangGraph Deployment Architecture) — use when module_id is module-1
Teaching instructions for Module 1 (LangGraph Deployment Architecture) — use when module_id is module-1
Create a new flake-parts module for planetscale/nix-devshell. Use when adding a new language toolchain module, team module, or any new shared devShell module to this repository.
Implement tasks from an OpenSpec change. Use when the user wants to start implementing, continue implementation, or work through tasks.
Archive a completed change in the experimental workflow. Use when the user wants to finalize and archive a change after implementation is complete.
Propose a new change with all artifacts generated in one step. Use when the user wants to quickly describe what they want to build and get a complete proposal with design, specs, and tasks ready for implementation.
Enter explore mode - a thinking partner for exploring ideas, investigating problems, and clarifying requirements. Use when the user wants to think through something before or during a change.
Edit the Prisma Next data contract — add models, fields, relations, indexes, enums, value objects (composite types), type aliases, namespaces (Postgres schemas), cross-contract foreign keys (cross-space FK), polymorphic types (`@@discriminator` / `@@base`), use extension namespaces (`pgvector.Vector(...)`, `cipherstash.EncryptedString(...)`), wire `prisma-next.config.ts` with `defineConfig` from the `@prisma-next/<target>/config` façade, and run `prisma-next contract emit`. Use for schema, models, fields, attributes, soft delete, paranoid, scopes, validations, callbacks, prisma schema, PSL, contract.prisma, contract.ts, contract.json, contract.d.ts, façade imports, `@prisma-next/postgres/config`, `@prisma-next/postgres/contract-builder`, `@prisma-next/postgres/control`, `@prisma-next/mongo/config`, `@prisma-next/mongo/contract-builder`, `extensions:`, `extensionPacks`, pgvector, cipherstash, postgis, paradedb, supabase, `@prisma-next/extension-supabase`, `@@control`, control policy, managed, tolerated, external, observed, PN-CLI-4002, PN-CLI-4003, PN-CLI-4011.
Semantic spacing system for Tailwind CSS v4 using block (32px) and tab (4px) units. Use when building UIs with consistent spacing, dashboards, admin panels, design tools, or any interface requiring a harmonious spacing system. Provides patterns for buttons, inputs, cards, toolbars, panels, and layouts.
MUST USE when reviewing ClickHouse schemas, queries, or configurations. Contains 31 rules that MUST be checked before providing recommendations. Always read relevant rule files and cite specific rules in responses.
Guides users through setting up the ClickHouse MCP server connection bundled with this plugin. Use when the user first installs the plugin or has trouble connecting to ClickHouse.
Get an Expo app running on the user's phone from a Tuft machine. Read this at the start of any session where the user asks for an app — including brand-new apps, before scaffolding or picking how to deliver it; assume the deliverable is an installable build on their device, not a web preview, unless they say otherwise, and start that build before feature work so it lands mid-session. Also use for EAS account/Apple/device setup via the Tuft dashboard flow, making development builds with EAS, Expo dev-client iteration, remotely exposing Metro with `tuft host`, generating a dev-client deep link, diagnosing device-only failures with Tuft telemetry, deciding whether a native rebuild is required, and handing a working preview back to the user.
Install a specific Xcode version on a Mac using the xcodes CLI, handing the Apple ID sign-in (password + 2FA) to the user through a shared live terminal. Use when a task needs Xcode/simulators and the machine doesn't have the right version, or the user asks to install/upgrade Xcode.
Plan and review MySQL/InnoDB schema, indexing, query tuning, transactions, and operations. Use when creating or modifying MySQL tables, indexes, or queries; diagnosing slow/locking behavior; planning migrations; or troubleshooting replication and connection issues. Load when using a MySQL database.
PostgreSQL best practices, query optimization, connection troubleshooting, and performance improvement. Load when working with Postgres databases.
Overview and information about Neki, the sharded Postgres product by PlanetScale. Load when working with Neki-related tasks and the need to scale or shard postgres. Load when facing Postgres scaling or sharding issues.
Vitess best practices, query optimization, and connection troubleshooting for PlanetScale Vitess databases. Load when working with Vitess databases, sharding, VSchema configuration, keyspace management, or MySQL scaling issues.
> Investigate a sudden change in web traffic. Use when a user reports a spike or drop in pageviews, sessions, or conversion and wants to find the likely cause (channel, device, referrer, or release) before escalating.
> Create a GitHub pull request for the current branch using the gh CLI. Use when a user wants to open a PR and have the title, body, template, and assignee handled for them, following the repo's conventions and keeping public PRs free of PII.
Compare a validated Next.js reproduction on its reported version and the latest published next@canary under equivalent conditions. Use when determining whether a confirmed vercel/next.js issue still reproduces on canary or appears fixed there.
Turn a validated Next.js reproduction and canary verification into the smallest appropriate regression test in vercel/next.js. Use when a confirmed issue needs a focused test that proves the reported behavior and fits the existing Next.js test suite.
Implement and validate the smallest correct fix for a confirmed issue in vercel/next.js after reproduction, canary verification, and regression-test work. Use when a focused failing Next.js regression test exists and the product code must be corrected without weakening that test.
Locate the introduction or fix boundary for a validated Next.js regression using releases or commits and an executable reproduction. Use after reported-version-versus-canary verification when a vercel/next.js maintainer needs the last unchanged and first changed version or commit.
Reproduce and validate a reported Next.js issue using real code and runtime evidence. Use when investigating whether a vercel/next.js bug report is reproducible, repairing an incomplete reproduction, or creating the smallest standalone reproduction when none is provided.
>- Convert existing projects into Apify Actors - serverless cloud programs. Actorize JavaScript/TypeScript (SDK with Actor.init/exit), Python (async context manager), or any language (CLI wrapper). Use when migrating code to Apify, wrapping CLI tools as Actors, or adding Actor SDK to existing projects.
>- Universal AI-powered web scraper for any platform. Scrape data from Instagram, Facebook, TikTok, YouTube, LinkedIn, X/Twitter, Google Maps, Google Search, Google Trends, Reddit, Airbnb, Yelp, and 15+ more platforms. Use for lead generation, brand monitoring, competitor analysis, influencer discovery, trend research, content analytics, audience analysis, review analysis, SEO intelligence, recruitment, or any data extraction task.
>- Integrate Apify into an existing JavaScript/TypeScript or Python application using the apify-client package. Use when adding web scraping, automation, or data extraction capabilities to an existing app via the Apify API.
>- Develop, debug, and deploy Apify Actors - serverless cloud programs for web scraping, automation, and data processing. Use when creating new Actors, modifying existing ones, or troubleshooting Actor code.
>- Generate output schemas (dataset_schema.json, output_schema.json, key_value_store_schema.json) for an Apify Actor by analyzing its source code. Use when creating or updating Actor output schemas.
Build, run, debug, and deploy Apify Actors. Use when the user wants to create an Actor, mentions apify create / apify run / apify push, or is debugging an Actor's input schema, storages, or deployment.
Design guide for building Apify integration plugins that expose Apify Actors to an agent/host platform. Use when designing, building, or reviewing a new Apify integration plugin — covers the single universal `apify` tool shape, the discover/start/collect primitives, the two-phase async (start/collect) pattern, batching, external-content wrapping against prompt injection, secret normalization, base-URL allowlisting, the config surface, and the setup/status CLI. Triggers: "new Apify integration", "Apify plugin", "wrap Apify Actors", "agent tool for Apify", "integration plugin design".
Validation harness for the apify-pi-plugin. Build, install, configure, and test the Apify plugin against a running pi agent. Uses pi -p one-shot mode and tmux for interactive commands. Used by the validator agent after the coder agent completes implementation. Triggers: "validate apify plugin", "test pi plugin", "verify apify integration".
Universal AI-powered web scraper for any platform. Scrape data from Instagram, Facebook, TikTok, YouTube, LinkedIn, X/Twitter, Google Maps, Google Search, Google Trends, Reddit, Airbnb, Yelp, and 15+ more platforms. Use for lead generation, brand monitoring, competitor analysis, influencer discovery, trend research, content analytics, audience analysis, review analysis, SEO intelligence, recruitment, or any data extraction task.
Integrate Apify into an existing JavaScript/TypeScript or Python application using the apify-client package. Use when adding web scraping, automation, or data extraction capabilities to an existing app via the Apify API.
Convert existing projects into Apify Actors - serverless cloud programs. Actorize JavaScript/TypeScript (SDK with Actor.init/exit), Python (async context manager), or any language (CLI wrapper). Use when migrating code to Apify, wrapping CLI tools as Actors, or adding Actor SDK to existing projects.
Develop, debug, and deploy Apify Actors - serverless cloud programs for web scraping, automation, and data processing. Use when creating new Actors, modifying existing ones, or troubleshooting Actor code.
Generate output schemas (dataset_schema.json, output_schema.json, key_value_store_schema.json) for an Apify Actor by analyzing its source code. Use when creating or updating Actor output schemas.
Clerk webhooks for real-time events and data syncing. Always output complete, copy-paste-ready webhook handlers with verifyWebhook(req) verification. Listen for user creation, updates, deletion, and organization events. Build event-driven features like database sync, notifications, integrations.
Add Clerk authentication to any project by following the official quickstart guides.
Advanced Next.js patterns - middleware, Server Actions, caching with Clerk.
Clerk Organizations for B2B SaaS - create multi-tenant apps with org switching, role-based access, verified domains, and enterprise SSO. Use for team workspaces, RBAC, org-based routing, member management.
Clerk Backend REST API explorer and executor. Browse tags, inspect endpoint schemas, and execute authenticated requests. Use when listing users, managing organizations, or calling any Clerk API endpoint.
Clerk authentication router. Use when user asks about adding authentication, setting up Clerk, custom sign-in flows, Swift or native iOS auth, native Android auth, Next.js patterns, React patterns, Vue patterns, Nuxt patterns, Astro patterns, TanStack Start patterns, Expo patterns, React Router patterns, Chrome Extension patterns, organizations, syncing users, or testing. Automatically routes to the specific skill based on their task.
>- Guides Stripe integration decisions — API selection (Checkout Sessions vs PaymentIntents), Connect platform setup (Accounts v2, controller properties), billing/subscriptions, Treasury financial accounts, integration surfaces (Checkout, Payment Element), migrating from deprecated Stripe APIs, and security best practices (API key management, restricted keys, webhooks, OAuth). Use when building, modifying, or reviewing any Stripe integration — including accepting payments, building marketplaces, integrating Stripe, processing payments, setting up subscriptions, creating connected accounts, or implementing secure key handling.
Write, review, or improve SwiftUI code following best practices for state management, view composition, performance, macOS-specific APIs, and iOS 26+ Liquid Glass adoption. Use when building new SwiftUI features, refactoring existing views, reviewing code quality, or adopting modern SwiftUI patterns.
Claude Skills — questions
Answers built from the skills we actually parsed.