Development Claude Skills
8 676 development skills from 759 authors. They write and change code. Half of them fit into 1 830 tokens or less — that is what one costs your context window when the agent loads it. 1 213 ship runnable scripts rather than instructions alone. 42 of them cannot work without an MCP server, most often rube. We also found 1 172 copies of these same skills sitting in other people's repositories — counted once here, not 1 172 times.
8 676 unique 759 authors 5 250 updated this month 1 369 from vendors
创建新的钉钉技能（dingtalk skill）。当用户提到"创建新技能"、"新建技能"、"开发钉钉技能"、"新增钉钉功能"、"添加钉钉接口支持"、"我需要一个钉钉 xxx 技能"、"钉钉待办"、"钉钉签到"、"钉钉考勤"、"钉钉审批"、"钉钉日程"等希望将某个钉钉 API 领域封装成可复用 skill 时，必须使用此技能。此技能包含完整的技能创建流程：SDK 探索 → SDK Python 测试 → 纯 HTTP Python 测试（两步全通过）→ SKILL.md 编写。测试未全部通过不得创建 skill。
Use this skill when diagnosing iOS app launch performance, startup regressions, first-frame readiness, or early responsiveness. Covers pre-main/dyld work, AppDelegate/SceneDelegate, SwiftUI App startup, launch orchestration, SDK initialization, and launch measurement. Do not use for general performance unless the code runs on the launch path.
Controls interactive terminal sessions for running long-lived processes, servers, REPLs, debuggers, and TUI programs without blocking. Use when you need to run dev servers (npm run dev), debuggers (pdb, gdb), REPLs (python, node), databases (psql, mysql), SSH sessions, or editors (vim, nano) — any interactive or blocking program.
Use trace-mcp tools for code navigation, impact analysis, and framework-aware queries instead of Read/Grep/Glob/Bash. Activate whenever the agent needs to explore, understand, or modify a codebase that has trace-mcp indexed.
>- Guidance for TypeScript monorepos with mixed package managers. Use when codebase has inherited package manager and a workspace root.
Use the Unoplat Code Confluence CLI to run the local app, configure providers, add repositories, and generate AGENTS.md artifacts with automatic PR publication. Trigger when users mention Unoplat, Code Confluence, repository setup, AGENTS.md generation, or agent-md workflows.
Code review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin, C#, .NET, Java, C, C++, Rust, Ruby, PHP, and Dart/Flutter. Analyzes PRs for complexity and risk, checks code quality for SOLID violations and code smells, generates review reports. Use when reviewing pull requests, analyzing code quality, identifying issues, generating review checklists.
Identify, evaluate, and prioritize design opportunities using impact-effort frameworks and strategic criteria.
Structure a pattern library entry with problem context, solution pattern, usage examples, and related patterns.
Audits any SDK documentation site and produces a fully scored, downloadable HTML report. Use this skill whenever a user provides a documentation URL and asks to audit, review, analyse, score, or check the quality of SDK docs. Also trigger for phrases like "audit the SDK docs at X", "check if the docs at X are complete", "review this SDK documentation", "how good are these docs", "run an SDK audit on X", or any time a user pastes a URL alongside words like audit, review, crawl, check, analyse, quality, completeness, or gaps. ALWAYS use this skill — do not attempt the audit without following this structured crawl → analyse → cross-reference → report workflow.
Design and write deterministic multi-agent workflow scripts (.js files in .claude/workflows/) for Claude Code's Workflow tool. Use when a user wants to build, create, author, scaffold, or run a custom Claude Code workflow, orchestrate sub-agents (fan-out, pipeline, loop, judge-panel), or automate a repeatable multi-step task across fresh-context agents.
> Audits any API documentation site by crawling every endpoint page and scoring each one response codes, and response schema completeness. Produces a polished interactive HTML report with a summary scorecard, site-wide pattern analysis, ranked top issues, and per-endpoint findings with specific fix guidance. Trigger this skill whenever a user provides a documentation URL and asks to audit, review, docs.company.com", "check the API docs at X", "run the API docs audit on X", "review the docs for Y API", or pastes a URL alongside words like audit, review, crawl, check, analyse, quality, completeness, or gaps. Always use this skill — do not attempt the audit without following this structured crawl-score-report workflow.
> Runs a full dead-end page audit for any website. Discovers all blog/content pages, detects which ones have zero outgoing links to any URL on the same domain, fetches keywords, clusters pages by topic, and generates 3 outgoing link suggestions per dead-end page with anchor text, placement guidance, and ready-to-paste context copy. Outputs a styled HTML report matching report-style-reference.html. Automatically detects site framework (Next.js, static, WordPress) and uses the correct detection CMS sites. Trigger when a user provides a domain or URL and asks for a dead-end page audit, outgoing internal links audit, "which pages don't link out", "find pages with no internal links in the content", "pages that are link dead-ends", or any variation of finding pages that have zero outgoing links to the same domain. Always use this skill for dead-end page audits — never attempt the workflow without following every step here.
Use when publishing or preparing to publish an npm package from this repository, especially the Skill Zoo CLI package under packages/cli. Also use when npm publish fails because of duplicate versions, npm authentication, browser authentication, dist-tag propagation, tarball contents, bin entry issues, or workspace/lockfile version mismatches.
Iris is Redis's umbrella for AI-focused products. Use this skill when integrating with the Iris Redis Agent Memory (RAM) data plane on Redis Cloud — recording session events for an AI agent, creating or searching long-term memories, configuring a memory store, or tuning background memory promotion. Code examples use the official `redis-agent-memory` (Python) and `@redis-iris/agent-memory` (TypeScript) SDKs.
When to reach for PyWry MCP tools (native webview rendering, Plotly, TradingView, AgGrid, chat) instead of writing Flask/Streamlit/Dash/Electron code. Use at the start of any task involving interactive UI, dashboards, charts, or chat widgets driven from Python.
Internationalization best practices for React Router framework mode using remix-i18next. Use when setting up locales, middleware, resource routes, or language switching.
JavaScript performance optimization guidelines. Use when writing, reviewing, or refactoring JavaScript/TypeScript code to ensure optimal performance patterns. Triggers on tasks involving loops, data structures, DOM manipulation, or general JS optimization.
React performance optimization guidelines. Use when writing, reviewing, or refactoring React components to ensure optimal rendering and bundle patterns. Triggers on tasks involving React components, hooks, memoization, or bundle optimization.
React Router performance and architecture patterns. Use when writing loaders, actions, forms, routes, or working with React Router data fetching. Triggers on tasks involving React Router routes, data loading, form handling, or route organization.
Campaign orchestration — multi-library skill production with dependency tracking, file-based state, and resume. Use when the user asks to "run a campaign" or "orchestrate skills.
Use when writing, running, configuring, reviewing, or debugging code in a Deno project, or when scaffolding a new one. Covers dependency management with deno install and deno add, package.json and node_modules support, npm and JSR packages, permissions, where configuration belongs across package.json, tsconfig.json and deno.json, workspaces, the built-in toolchain (fmt, lint, test, check, bench, compile), and publishing.
Use when moving a Node.js, npm, Yarn, pnpm, or Bun project to Deno, or when adopting Deno incrementally in an existing JavaScript or TypeScript codebase. Covers using Deno as a drop-in package manager, running existing package.json scripts, CommonJS versus ESM, node_modules layout, lockfile migration, permissions, whether to adopt the built-in toolchain, and per-tool command equivalents.
Use when building features that execute untrusted user code, AI-generated code, or need isolated code execution environments. Covers the @deno/sandbox SDK.
Use when building a web frontend with Deno — running React, Vite, Astro, SvelteKit, Next.js, Nuxt or other npm frameworks under Deno, or working with Fresh, Deno's own island-architecture framework. Covers which path to pick, Fresh 2.x routes, handlers, islands, Preact signals, Tailwind, and Fresh 1.x to 2.x migration.
Instrument a new AI agent in a Python codebase for Monte Carlo Agent Observability. Detects AI libraries, installs the Monte Carlo OpenTelemetry SDK, and proposes tracing setup and decorator placements as diffs. Asks before editing any file.
Create, edit, validate, and import Monitors-as-Code YAML files. CLI-first; falls back to MC MCP tools, then manual validation.
Investigate and remediate data quality alerts using Monte Carlo MCP tools. Runs root cause analysis, assesses blast radius, discovers available tools (MCP/CLI/API), proposes and executes fixes, or escalates with full context when uncertain.
Scaffolds a new intelligent textbook project from scratch — mkdocs.yml, docs/ directory tree, starter pages, and license files. Use at the very start of a new project, before chapters, learning graph, or MicroSims exist.
Generates an interactive Docker Python lab block for MkDocs textbook pages, where students write and run real Python code inside an isolated Docker container. Use this skill whenever someone asks to add a Python lab, code runner, interactive Python exercise, or runnable code block to a textbook page that uses Docker (not Skulpt). Also use it when adding multiple labs to a single page, setting up the shared CSS/JS infrastructure, or creating a timing/benchmark lab that shows students how long each phase takes. Always invoke this skill instead of writing docker lab HTML by hand.
Authoritative architecture reference for Lagune, covering repository layout, the command/template split, the core/adapter boundary, what it scaffolds, and the tracking-map model. Use before adding an agent or when a decision depends on repo shape.
Author a new built-in Lagune sub-skill inside the Lagune source, not a scaffolded `.lagune/` target. Use when adding or refining a security knowledge module that ships with Lagune, against the native layout (`spec/skills/*.md` plus the catalog).
Master systematic debugging techniques, profiling tools, and root cause analysis to efficiently track down bugs across any codebase or technology stack. Use when investigating bugs, performance issues, or unexpected behavior.
Master advanced Git workflows including rebasing, cherry-picking, bisect, worktrees, and reflog to maintain clean history and recover from any situation. Use when managing complex Git histories, collaborating on feature branches, troubleshooting repository issues, or when initializing a new repository according to our companies specific guidelines.
FHIR API development guide for building healthcare endpoints. Use when: (1) Creating FHIR REST endpoints (Patient, Observation, Encounter, Condition, MedicationRequest), (2) Validating FHIR resources and returning proper HTTP status codes and error responses, (3) Implementing SMART on FHIR authorization and OAuth scopes, (4) Working with Bundles, transactions, batch operations, or search pagination. Covers FHIR R4 resource structures, required fields, value sets (status codes, gender, intent), coding systems (LOINC, SNOMED, RxNorm, ICD-10), and OperationOutcome error handling.
This skill MUST be invoked when users want to create, build, or develop MCP (Model Context Protocol) servers. Should be used for any task involving MCP server creation, whether simple calculator tools or complex API integrations. Covers FastMCP (Python) and MCP SDK (Node/TypeScript) implementations, tool design patterns, error handling, security best practices, and testing. Invoke this skill whenever the user mentions 'MCP server', 'MCP tool', 'FastMCP', or asks to create tools for LLM interaction.
Make sure to ALWAYS use this skill when working with python code! Help designing, structuring, and maintaining Python projects, including virtualenvs, packaging, SQLite (sql3) usage, documentation of bug fixes, and clear commenting practices.
Generate changelog entries from git diffs, prepend to CHANGELOG.md, and optionally commit + PR. Use when the user wants to update the changelog.
Consults existing breadcrumb analysis docs before exploring the codebase. Use this skill whenever the user asks about how a flow works, where something happens in the code, how to debug or test a specific area, what files are involved in a feature, or needs to understand the path data takes through the system. Also trigger when the user mentions 'where does X happen', 'how does Y work', 'trace this', 'what files handle Z', 'how to test this flow', 'debug this area', or when you're about to spawn multiple exploration subagents to understand a cross-cutting flow. Even if the user doesn't explicitly ask — if the task requires understanding how multiple layers connect (frontend → backend → worker → CLI), check breadcrumbs first. This is cheaper and more accurate than re-discovering the same information through code search.
Run comprehensive agent-native architecture review with scored principles. Audits a codebase against 8 agent-native architecture principles (Action Parity, Tools as Primitives, Context Injection, Shared Workspace, CRUD Completeness, UI Integration, Capability Discovery, Prompt-Native Features) by launching parallel sub-agents and producing a scored report. Use when the user wants to evaluate how agent-friendly their architecture is, or audit specific principles. Triggers on: 'agent native audit', 'architecture review', 'how agent-friendly is this', or /hk-arch-audit.
Inspect and debug errors via logs across the harness-kit monorepo. Reads the right log file based on the error layer — backend, frontend, celery, odin CLI, or odin task execution. Use this skill whenever someone mentions a 500 error, a stack trace, a crash, 'check the logs', 'what went wrong', a service not starting, celery task failures, or any runtime error. Also triggers on: 'getting 500', 'backend error', 'celery error', 'odin failed', 'check logs', 'tail logs', 'debug this error', or /hk-local-logs.
Run a codebase hygiene audit. Scans for misplaced files, dead code, temp files, security issues, structural problems, dependency slop, and git slop. Outputs a prioritized report with P0-P4 findings. Use periodically or before releases. Triggers on: 'audit the codebase', 'find slop', 'hygiene check', 'clean up', or /hk-slop-audit.
Use MagicPath through the magicpath-ai CLI to find, preview, inspect, install, export, create, and edit UI components and manage MagicPath skills. Trigger for MagicPath designs/components; personal or team projects; active canvases and selected components/images/revisions; themes/design systems; teams, members, ownership, attribution, installed-component audits, and share/view links. Use when exporting exact MagicPath components or revisions to local folders/apps; replacing, adapting, or translating local UI with 1:1 fidelity and explicit requested changes; installing React/TypeScript components with inspect/add; authoring responsive interactive canvas components with code start/submit; importing or recreating UI from local paths or GitHub/GitLab/Bitbucket repositories into MagicPath; or creating, retrieving, updating, importing, enabling, disabling, or deleting MagicPath skills. In hosts with an embedded browser, keep the project canvas open via share URLs for visual work.
Audit and modernize RstackJS/Rspack ecosystem repositories against current infrastructure baselines. Choose between the Rsbuild-style Rstack CLI monorepo lane and the standalone Rslib/Rslint/Rstest package lane; maintain package.json metadata, exports, dependency placement and version freshness; align ESM or dual output, Node/pnpm/TypeScript versions, formatter, CI action pins, release validation, docs, dependencies, and infra PR conventions. Use when updating rstackjs repositories, refreshing infrastructure or package manifest baselines, copying patterns from Rsbuild or maintained exemplars, or reviewing package and tooling consistency.
Debug Rstack ecosystem CI failures and attribute the real source PR or downstream change. Always use this skill when the user mentions Rspack eco-ci, rstack-ecosystem-ci, a suite turning red, a downstream regression, a green-to-red pivot, canary bisect, @rspack-canary/core, or daily eco-ci triage — even if they only ask "why is this suite failing", "which PR broke it", or "is this Rspack's fault". Use it to avoid over-blaming the first Rspack commit that appears red in status data.
Create or update draft GitHub release notes, or output organized Markdown when draft creation is unavailable. Use for release notes, draft releases, release PR checks, npm staged publishing checks, and optional highlights.
Migrate webpack, Vite, create-react-app (CRA/CRACO), or Vue CLI projects to Rsbuild.
Use when upgrading a Rsbuild 1.x project to v2, including dependency and configuration updates.