An agentic software-development methodology: composable skills that push a coding agent through spec, plan, TDD and review instead of straight into code.
Development
Development Skills
Build software, MCP servers, and web apps.
Tencent's skill-evolution harness: it rewrites a whole skill folder — SKILL.md, scripts and references together — and lands every decision as a real Git issue, PR and wiki entry you can review.
Development
Take an OpenSearch search application from requirements to a running cluster — BM25, dense and sparse vectors, hybrid retrieval, agentic search and RAG, with relevance evaluation built in.
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Auth0's official agent skill: a router that detects your framework and intent, then loads the right Auth0 guidance for login, MFA, Organizations, tenant audits, debugging or provider migration.
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Redis' own guidance for FT.CREATE schema design, FT.SEARCH / FT.AGGREGATE / FT.HYBRID, HNSW vector similarity and RAG retrieval pipelines.
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Supabase's official skill covering Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron and Queues — with a hard rule to verify against the live changelog before writing code.
Development
GreenSock's official ScrollTrigger skill — scroll-linked animation, pinning, scrub and trigger positioning, with the exact start/end syntax agents get wrong.
DevelopmentDesign & Creative
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Microsoft's official skill that turns an agent into an Azure solution architect — 10 design principles, 6 architecture styles, 44 design patterns and a Well-Architected review workflow.
Development
Trail of Bits' security review skill for PRs, commits, and diffs: risk-first analysis with git history, blast radius, and honest coverage limits.
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Generates and validates parametric STEP-first CAD parts and assemblies from natural language.
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Deno's official foundational skill — project setup, package choices, configuration, and CLI commands done the current way.
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Build Gradio web UIs and ML demos in Python with the current API — components, layouts, events, and chat interfaces.
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Cloudflare's official platform skill — Workers, Pages, storage, AI, networking, security, and IaC in one reference.
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Never claim work is complete, fixed, or passing without running the check and reading the output first.
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Enforce a real red-green-refactor loop when implementing features or fixes, so behaviour is specified before it is written.
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A disciplined debugging process — reproduce, isolate, hypothesise, and verify — used before proposing any fix.
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Explore intent, requirements, and design with the user before any code gets written — the antidote to building the wrong thing quickly.
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Elastic's official skill for monitoring LLM and agent workloads — token cost, latency, response quality and workflow orchestration, queried with ES|QL.
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MongoDB's official data-modelling skill — embed-vs-reference decisions, relationship patterns and the anti-patterns that quietly wreck performance and cost.
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Deploy, configure and troubleshoot the NVIDIA RAG Blueprint from your agent — Docker Compose, Helm or library, with feature toggles for VLM, guardrails and agentic RAG.
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NVIDIA's own guidance for moving pandas workloads onto GPU DataFrames with cuDF and dask-cuDF — when it pays off, and how to keep results identical.
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A decision board for contested calls: feed your agent papers and half-formed ideas, and it files them into a traceable sources → ideas → output structure you can defend, with a visual canvas over the markdown.
DevelopmentWriting & Communication
67 game-development skills across ten engines — Godot, Unity, Unreal, Bevy, Phaser, PixiJS, three.js, LÖVE, pygame, Roblox — behind a router that detects your engine and loads only what fits.
DevelopmentDesign & Creative
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A meta-skill that spots the moment your agent has just earned a hard-won golden path and writes it down as a reusable skill, so the next session starts already knowing the route.
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Provision and deploy to Aiven for OpenSearch from an agent — managed clusters on AWS, GCP, Azure, DigitalOcean or UpCloud, with the Aiven-generated password read back after provisioning.
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Investigate OpenTelemetry traces stored in OpenSearch — slow and error spans, reconstructed trace trees, service maps, plus agent invocation and token-usage analysis.
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Query and analyse logs held in OpenSearch using PPL and Query DSL — error-pattern discovery, error-rate tracking and anomaly detection, driven from natural language.
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Answer "who changed what" from Datadog Audit Trail — configuration-change forensics, API key compromise, cost-spike root cause, SOC 2/PCI evidence and AI activity audits.
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Install, instrument and analyse Datadog APM from an agent — Kubernetes and Linux Single-Step Instrumentation, service remapping, trace search and service maps.
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Search Datadog logs from an agent and keep the bill under control — query syntax, exclusion filters, log-based metrics, archives and PII scrubbing.
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Create and audit Datadog monitors from an agent via the pup CLI — with alerting rules that stop the usual flapping, unscoped and unowned monitors.
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ClickHouse's official agent skill: 31 rules for primary keys, data types, JOINs, batching and partitioning that an agent must check and cite before advising on a schema or query.
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Neon's official agent skill for serverless Postgres — connection strings and drivers, pooled vs direct connections, branching, autoscaling, scale-to-zero, read replicas and logical replication.
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Netlify's official agent skill for shipping a project with the Netlify CLI — auth, site linking, preview and production deploys, and reading live function logs when a deploy misbehaves.
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Stripe's official agent skill for choosing the right payments primitive — Checkout vs PaymentIntents, Connect, Billing, Tax — and for handling API keys and webhooks safely.
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Upstash's official skill for the Workflow TypeScript SDK - define serverless workflow endpoints, run durable steps, and trigger and manage runs from the client.
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Elastic's official skill for writing and running ES|QL - the piped Elasticsearch query language - covering schema discovery, query patterns, error handling and result formats.
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Browserbase's official skill for driving a real browser from an agent via the browse CLI - navigate, snapshot, fill forms and click, locally or in a cloud session.
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Clerk's official skill for advanced Next.js auth: middleware strategy, protecting Server Actions, caching-safe auth() usage, session tokens and manual JWT verification.
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Prisma's official skill for migrating an ORM project from v6 to v7 - the prisma-client generator, driver adapters, prisma.config.ts, ESM entrypoints and every removed API.
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Audit UI code against Vercel's Web Interface Guidelines — accessibility, interaction, performance and layout rules — reported as terse file:line findings.
DevelopmentDesign & Creative
Vercel Engineering's React and Next.js performance playbook as an agent skill — 70 rules across 8 categories, ordered by impact, for writing and refactoring fast components.
Development
Integrate Firecrawl's /scrape endpoint into product code — turn a known URL into markdown, HTML, links, metadata or screenshots, with sensible defaults baked in.
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Sentry's Django performance review skill — hunts N+1 queries, unbounded querysets, missing indexes and write loops, and reports only findings it can prove.
Development
Analyse a repository's tech stack and generate a recommended Claude Code settings.json permission allowlist for its read-only commands.
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Cypress' official skill for writing, updating and repairing E2E and component tests — and it triggers on "write tests" even when nobody says Cypress.
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Angular's official skill for generating idiomatic modern Angular — signals, resource and httpResource, forms, DI, routing, SSR, ARIA and CLI scaffolding.
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Resend's official skill for the whole email lifecycle — transactional sends, inbound webhooks, templates, broadcasts, domains and delivery events.
DevelopmentWriting & Communication
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Qdrant's meta-skill: instead of shipping static docs, it loads the current official Qdrant skill tree live from skills.qdrant.tech and diagnoses from that.
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MongoDB's official skill for choosing between Atlas Search, Vector Search and Hybrid Search, then building the right indexes and queries for the use case.
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The Flutter team's official skill for structuring an app in the recommended UI / Logic / Data layers, with MVVM view-models and the repository pattern.
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Firebase's official red-team skill for auditing Firestore and Cloud Storage security rules — hunting privilege escalation, create/update bypasses and resource-exhaustion holes.
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Apollo's official skill for wrapping REST APIs into a GraphQL supergraph with @source and @connect directives — no resolvers, with compose, run and test steps enforced.
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File-based planning for long-running agent tasks — crash-proof markdown plans that survive /clear and compaction, with per-turn re-injection and a deterministic completion gate.
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The .NET team's official skill for scanning C# against ~50 performance anti-patterns across async, memory, strings, collections, LINQ, regex and I/O.
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Google's official Android skill for auditing R8 and ProGuard keep rules — finds redundant and overly broad rules that quietly inflate APK size.
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Remotion's official skill for scaffolding a programmatic video project in React and iterating on it in the Studio preview instead of re-rendering.
DevelopmentDesign & Creative
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GreenSock's official skill for the GSAP core engine — tweens, eases, staggers, defaults and responsive/reduced-motion animation via matchMedia.
DevelopmentDesign & Creative
Microsoft's official skill for giving AI agents real OAuth2 identities in Entra — blueprints, agent identities, sponsors, workload identity federation and the auth sidecar.
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Google's official skill for calling Gemini on Agent Platform (formerly Vertex AI) with the Gen AI SDK — Python, JS/TS, Go, Java and C#, plus tools, multimodal input and the Live API.
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Google's official skill for getting Google Cloud authentication right — human identities, service accounts, Application Default Credentials, and the failure modes agents usually hit.
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PostHog's official skill for auditing a live analytics implementation — scripts, network calls, and window state — read-only, via browser automation.
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NVIDIA-verified skill that takes an agent from a problem described in prose to a correct LP, MILP, or QP formulation — concepts, not API calls.
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Official Expo skill for Expo Router: file-based routes, native stacks, NativeTabs, modals and form sheets, headers, toolbars, and search bars.
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Grafana's official PromQL skill: write, validate, and optimise Prometheus queries, and hunt down the label that blew up your cardinality.
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Skill: GitHub Actions Security Review
by Sentry
Audit GitHub Actions workflows for the exploitation patterns that leak secrets or allow code execution from a fork.
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Skill: Code Simplifier
by Sentry
Clean up code for clarity, consistency, and maintainability without changing what it does.
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Skill: Find Bugs in Branch Changes
by Sentry
Audit the changes on your current branch for bugs, security vulnerabilities, and quality problems before you push.
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Skill: Engineering Code Review
by Sentry
Review pull requests against a real engineering practice — security, performance, testing, and design, in that order.
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Skill: Deno Sandbox
by Deno
Run untrusted or model-generated code in an isolated environment using the @deno/sandbox SDK.
Development
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Skill: Deno Frontend with Fresh
by Deno
Build web UIs with Fresh and Preact on Deno — routes, handlers, islands, and Tailwind, using the current framework API.
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Skill: Deno Deploy
by Deno
Deploy Deno applications to production on Deno Deploy — CLI workflows, environment config, KV, and custom domains.
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Skill: Local Model Selection
by Hugging Face
Choose and run the right local model with llama.cpp and GGUF — quantisation, hardware fit, and local serving.
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Skill: LLM Fine-Tuning with TRL
by Hugging Face
Fine-tune language and vision models with TRL or Unsloth — supervised, preference, and reinforcement training methods.
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Skill: Transformers.js
by Hugging Face
Run machine learning models directly in the browser or Node with Transformers.js — no inference server required.
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Skill: Hugging Face Spaces
by Hugging Face
Deploy and maintain applications on Hugging Face Spaces — SDK choice, GPU hardware, model loading, and debugging.
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Skill: Hugging Face CLI
by Hugging Face
Hugging Face's official CLI skill — download, upload, and manage models, datasets, Spaces, and Jobs from the terminal.
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Skill: Web Performance Auditing
by Cloudflare
Audit Core Web Vitals with real measurements via Chrome DevTools — then fix what the numbers actually point to.
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Skill: Cloudflare Sandbox SDK
by Cloudflare
Build secure code-execution features on Cloudflare — sandboxes for AI-generated code, interpreters, and CI systems.
Development
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Skill: Wrangler CLI
by Cloudflare
Cloudflare's CLI reference skill — correct Wrangler commands for deploying and managing Workers and every binding.
Development
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Skill: Cloudflare Durable Objects
by Cloudflare
Create and review Cloudflare Durable Objects — single-instance coordination with SQLite storage, alarms, and WebSockets.
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Skill: Cloudflare Agents SDK
by Cloudflare
Build stateful AI agents on Cloudflare Workers — durable state, scheduling, RPC, WebSockets, and MCP servers.
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Skill: Writing Skills
by Jesse Vincent
Create, edit, and verify agent skills — including how to write a description that actually triggers at the right moment.
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Skill: Dispatching Parallel Agents
by Jesse Vincent
Run two or more genuinely independent tasks concurrently, with the briefing and isolation that makes it safe.
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Skill: Using Git Worktrees
by Jesse Vincent
Set up an isolated workspace with git worktrees before starting feature work or executing a plan.
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Skill: Subagent-Driven Development
by Jesse Vincent
Execute an implementation plan by dispatching independent tasks to subagents, keeping the main context focused.
Development
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Skill: Receiving Code Review
by Jesse Vincent
Respond to code review feedback with technical rigour — verify each point instead of agreeing with everything.
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Skill: Requesting Code Review
by Jesse Vincent
Prepare and request a code review that checks the work against its original requirements, not just its syntax.
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Skill: Executing Implementation Plans
by Jesse Vincent
Work through a written implementation plan in a fresh session, with review checkpoints between steps.
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Skill: Writing Implementation Plans
by Jesse Vincent
Convert a specification into a written implementation plan with discrete, verifiable steps, before touching code.
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Skill: Vercel Optimize
by Vercel
Vercel's official optimization skill: collects real production metrics first, then returns ranked, citation-checked cost and performance fixes.
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Skill: Data Visualization
by Anthropic
Anthropic's official data-visualization skill: pick the right chart for the data, then build it with ready-to-run matplotlib, seaborn, and plotly patterns.
DevelopmentDesign & Creative
Skill: MCP Builder
by Anthropic
Anthropic's guide for building high-quality MCP servers end to end — research, tool design, implementation in TypeScript or Python, testing, and a 10-question evaluation suite.
Development
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