Development Claude Skills
8 673 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 1 239 copies of these same skills sitting in other people's repositories — counted once here, not 1 239 times.
8 673 unique 759 authors 10 updated this month 1 368 from vendors
Finalize development branches for integration. Prepares branches for merging with cleanup, rebasing, and verification steps.
Generate OpenAPI documentation from source code. Analyzes repository to automatically discover API endpoints and create swagger.json and interactive HTML documentation. Use when generating API docs, creating OpenAPI specs, documenting REST APIs, or analyzing API endpoints.
Design user-centric interfaces for web applications. Creates wireframes, visual designs, and interactive prototypes with usability focus.
Use Git worktrees for isolated work environments. Creates separate working directories for parallel development on different branches.
Hand off code review to OpenAI Codex CLI. Use when asked to "review code with codex", "codex review", "get a second opinion on code", "review my changes", "review this PR", or when you want AI-powered code review from a different model perspective.
Expert platform and API product management guidance for developer-focused products. Use when planning API product strategy, designing APIs, improving developer experience (DX), creating developer documentation, building SDKs, planning API versioning and deprecation, building developer communities, creating integration marketplaces, or measuring platform health. Covers REST, GraphQL, webhooks, and platform ecosystems.
Scaffolds Remotion project folder structure, base configuration files, and file organization. Focuses ONLY on directory creation, empty file templates, and Remotion configuration. Use when starting a new video project or when asked to "scaffold Remotion project", "create project structure", "setup Remotion folders".
> Load this skill before implementing a fix for a barrier that may originate in a shared component, design system, renderer, or external dependency rather than this project's own code. Decide whether the responsible fix is local, an existing installed capability, or an upstream contribution before writing a workaround. Absolutely always record any temporary local divergence with an owner and removal condition. Under no circumstances open, comment on, or submit anything in an external project without explicit human approval.
Use when establishing branching strategies, implementing Conventional Commits, creating or reviewing PRs, resolving PR review comments, merging PRs (including CI verification, auto-merge queues, and post-merge cleanup), managing PR review threads, merging PRs with signed commits, handling merge conflicts, integrating Git with CI/CD, setting up git hooks (lefthook, captainhook, husky, pre-commit), or debugging hook-install failures in git worktrees. Not for creating releases (use github-release) or diagnosing BLOCKED/won't-merge PRs (use github-project).
Placeholder skill used only to smoke-test the eval framework's workdir-capture mechanism. Not a real skill — delete once a real code-gen skill exists.
Drive the cultivar CLI to test whether an agent skill improves behavior — scaffold tasks, run with/without the skill across Claude/Copilot/Gemini (locally or on Modal), grade against a rubric, and read the results.
>- Expert coding skill for the full MapTiler platform — Cloud REST APIs, MapTiler SDK JS (built on MapLibre GL JS), native mobile SDKs, on-premise infrastructure, and vector tile schemas. USE WHEN the user wants to add a map to a web or mobile app, show locations or routes, display geographic data, build a store locator, create data visualizations on maps, add geocoding or address search, do reverse geocoding, look up elevation, do IP geolocation, fetch weather data, transform coordinates between CRS/EPSG, embed static map images, work with vector tilesets (Planet v4, Buildings, Contours, Outdoor, Ocean, Landcover, Cadastre), write MapLibre style expressions or data-driven styling, render 3D terrain, globe view, or 3D buildings extrusion, use satellite imagery, add markers, popups, heatmaps, or clustering, integrate maps in React, Vue, Svelte, Angular, Next.js, Leaflet, OpenLayers, Cesium, or deck.gl, build native maps on iOS (Swift), Android (Kotlin), Flutter, or React Native, self-host with MapTiler Server or generate tiles with MapTiler Engine CLI, or upload/manage tilesets via the Admin API. Also USE WHEN the user mentions MapLibre GL JS — the SDK extends MapLibre with built-in cloud services, helpers, and session billing.
Structure, classify, and write documentation using the Diátaxis framework. Use when writing docs, README files, guides, tutorials, how-to guides, API references, or organizing documentation architecture. Also use when asked to improve documentation, restructure docs, decide what type of doc to write, or classify existing content. Covers tutorials, how-to guides, reference, and explanation.
Use when answering complex questions about a codebase that require exploring multiple areas or understanding how components connect - coordinates parallel sub-agents to locate, analyze, and synthesize findings
Use when evaluating designs, reviewing code, or refactoring - measures success by total code in the final codebase, not effort to get there. Bias toward deletion.
Jujutsu (jj) — the Git-compatible version control system. Activate ONLY when a .jj/ directory is present in the project or when jj/jujutsu is explicitly mentioned. Do NOT activate for plain git repos without .jj/. Use for any VCS operations in jj-managed projects: commit, push, pull, branch, bookmark, rebase, squash, merge, diff, log, status, working copy, change ID, revset, fileset, template, configuration, workspaces.
> Reviews Svelte components for idiomatic patterns, identifies anti-patterns carried over from React/Vue/Svelte 4, and suggests Svelte 5 refactorings. Use when writing or reviewing Svelte components, asking "is this idiomatic", "Svelte way", doing Svelte 5 migration, or slot-shaped APIs, lifecycle-driven code, imperative DOM wiring, immutable-update ceremony, context value replacement, shadcn-svelte form structure, Field.* components, bits-ui form controls, or component APIs that hide ownership. This is the general-purpose entry point for Svelte component review; delegates to sveltekit for routes/load/actions/server concerns and to focused references for details.
> Mental-model reset for Salsa, the incremental computation framework for Rust. Use when building or reviewing Salsa databases, tracked functions, input/ tracked/interned structs, query pipelines, accumulators, cancellation, durability, LSP integration, memory management, cycles, or production Salsa revisions, backdating, red-green algorithm, WillExecute, DidValidateMemoizedValue, Cancelled, returns(ref), no_eq, lru, cycle_fn,
> Mental-model reset for Rust. Use when writing or reviewing Rust code to shift from "it compiles" to "thinks in Rust." Triggers on Rust code review, "is this idiomatic", borrow-checker errors, API design, domain modeling, ownership, lifetimes, errors, traits, async/Tokio, unsafe, serde, FFI, tests, performance, Cargo structure, .rs files, Cargo.toml, rustc diagnostics, clippy findings, Result/Option, thiserror vs anyhow, newtype, typestate, enum vs trait, dyn Trait, Send/Sync, Pin, Miri, PyO3, napi-rs, cxx, UniFFI, wasm-bindgen, serde attributes, or feature unification.
Use when merging parallel agent work or branches to resolve both syntactic merge conflicts (merge markers) and semantic conflicts (contradictory logic, API changes, schema mismatches) that traditional merge tools miss.
Use when you need to run multiple Claude Code agents simultaneously on different parts of a codebase, or when a task is large enough to benefit from decomposition into parallel sub-tasks with clear contracts.
Instrument web/web-app code with structured debug logging via a global variable (window.__debug_logs). Produces a clean JSON timeline for reproducing and diagnosing bugs. Use when user wants to debug a feature or track down a bug.
List and review Advanced Security alerts for an Azure DevOps repository. Shows dependency vulnerabilities, secret exposure, and code scanning findings with filtering by severity, state, and alert type.
Guide for creating effective GitHub Copilot skills (.github/skills/) in this repository. Use when creating a new skill, updating an existing skill, or when asked about skill structure, format, or best practices for the vscode-documentdb project.
Generate a three-layer eval suite (presence checks + unit tests + security analysis) for Power Apps Generative Pages in Model-Driven Apps. Generative pages are single-file React/TypeScript components using Fluent UI V9 and the dataApi prop for Dataverse operations — NOT Code Apps, NOT PCF components. Code may be generated by the App Agent in make.powerapps.com or by AI code generation tools (Claude Code, GitHub Copilot CLI) using the /genpage skill. Always produces: evals/manifest.json, evals/presence/<id>.check.ts, evals/unit/<feature>.test.tsx, evals/runner/run-evals.ts, evals/runner/presence-runner.ts, evals/runner/security-runner.ts, and evals/dashboard/index.html. Triggers: 'eval my generative page', 'generate evals for gen page', 'review my genpage code', 'test my generative page', 'check my model driven app page', 'eval generator gen pages'.
Generate a brand-aligned design guide for a new code app instead of using the default template styling. Use when: the user wants to start a new app with their own brand identity, mentions 'design guide', 'brand guidelines', 'style guide', or wants to customize the look and feel before building. This skill runs BEFORE the code-apps plugin to establish brand tokens, then delegates app creation to /create-code-app.
Generate a two-layer eval suite (presence checks + static security analysis) for a Power Apps Code App. Code Apps use @microsoft/power-apps SDK with generated service classes in src/generated/services/ — NOT @microsoft/powerapps-component-framework or context.webAPI.*. BRD is optional — if absent, features are derived from a code review of the project. Always produces: evals/manifest.json, evals/presence/<id>.check.ts files, evals/runner/run-evals.ts, evals/runner/presence-runner.ts, evals/runner/security-runner.ts, and evals/dashboard/index.html. Triggers: 'generate code app evals', 'eval my code app', 'generate tests for code app', 'code app eval generator', 'check feature completeness code app'.
> Validates and optionally fixes Agent 365 observability code so an agent actually emits MAC Activity telemetry. Use when an Agent 365 agent's telemetry isn't reaching MAC Activity or Defender, when spans export (HTTP 200 / "sent") but Activity stays empty, when the caller or agent id looks wrong in reporting, or to pre-flight whether an agent will emit MAC Activity before shipping. Diagnoses and fixes existing instrumentation; do NOT use it to add observability from scratch — use instrument-observability for that. Checks exporter activation, runtime agent-identity binding (vs blueprint id), the S2S FMI / OBO token shape, S2S vs OBO endpoint selection, the required semantic spans (invoke_agent/chat/execute_tool/output_messages), Activity attributes, and live blueprint grants and inheritance through read-only a365 Microsoft Graph diagnostics. Read-only by default; asks before applying safe fixes. Python, Node.js, and .NET.
> Adds WorkIQ MCP tool servers to an existing .NET AgentFramework, Node.js, or Python agent using the A365 CLI. Runs a365 develop list-available to show the catalog, adds selected servers via a365 develop add-mcp-servers (which writes ToolingManifest.json), wires McpToolRegistrationService in the agent code, and guides the user through the permissions handoff. Non-destructive and idempotent.
> Runs an Agent 365 AI Teammate agent locally and opens AgentsPlayground for interactive local testing. Works with any AI Teammate stack — .NET (AgentFramework, Semantic Kernel), Node.js (LangChain, OpenAI, Claude SDK, Semantic Kernel, Google ADK), or Python (AgentFramework, LangChain, OpenAI, Claude, Semantic Kernel, Google ADK). Checks prerequisites (agentsplayground CLI, build tools), builds the agent, starts it in the background, and launches the playground UI pointed at the local endpoint. AgentsPlayground connects to /api/messages over HTTP — the LLM framework does not matter.
> Entry point for general Agent 365 (A365) registration and CLI setup — use this skill whenever the user wants to "set up A365", "register agent", "create blueprint", or general A365 onboarding for non-AI-Teammate agents (Register, Observability paths). Verifies and installs the CLI, validates Azure prerequisites, then delegates to make-a365-agent or make-ai-teammate at Step 3. Does NOT run a365 setup all inline — setup is run by the delegated skill. Supports .NET AgentFramework, Node.js LangChain, and Python agents.
> Transforms a non-M365 agent into a Microsoft Agent 365 AI Teammate. Supports all major frameworks across .NET (AgentFramework, Semantic Kernel), Node.js (LangChain, OpenAI Agents SDK, Claude SDK, Semantic Kernel, Google ADK), and Python (AgentFramework, LangChain, OpenAI, Claude, Semantic Kernel, Google ADK). Adds the hosting layer (Express/CloudAdapter for Node.js, ASP.NET Core for .NET, aiohttp for Python), AgentApplication class with message routing and typing indicators, email notifications, and all required packages and env vars. Wraps existing LLM code — does not replace it. Requires a365-setup to have been run first.
> Instruments Microsoft Agent 365 observability into existing .NET AgentFramework, Node.js, or Python agents. Adds OTel-based tracing, context propagation, A365 exporter, manual instrumentation scopes (InvokeAgentScope, InferenceScope, ExecuteToolScope — required for store publishing), and updates configuration files. Asks a two-stage question — agent kind (AI Teammate or Agent (Non AI Teammate)) and auth mode — to determine (FMI 3-hop token chain with Power Platform scope supported for .NET, Node.js, and Python — each language gets a scaffold token-service file that acquires and refreshes the Observability API token via the FMI chain). Non-destructive and idempotent.
Guides building, deploying, troubleshooting, and installing Atlassian Forge apps — custom extensions built with the Forge CLI (forge create, forge deploy, forge install). Use when the user wants to create a Forge app (issue panels, dashboard gadgets, Confluence macros, global pages), is encountering Forge CLI errors or deployment issues (e.g. forge install failures, environment errors), or needs help with Forge-specific concepts like resolvers, UI Kit, manifest scopes, or developer spaces. Do not use for general Jira configuration, automation rules, JQL queries, or Atlassian REST API usage outside of a Forge app context.
> Performs a lightweight pre-release readiness review of Atlassian Forge apps across manifest/module wiring, architecture, runtime compatibility, dependency posture, tests, deploy readiness, and obvious security, cost, or reliability smells. Use when the user asks "review my Forge app", "pre-deploy check", "is this app ready to ship", "review manifest", "general app review", "release readiness", or asks for a broad quality pass. Do not use for deep security audits/SAST/exploitability review, cost optimization, or diagnosing a known broken app; route those to forge-security-review, forge-cost-optimizer, or forge-debugger respectively.
> Guides building and deploying Atlassian Forge Teamwork Graph connector apps that ingest external data into Atlassian's Teamwork Graph, making it searchable in Rovo Search and surfaced in Rovo Chat. Use when the user wants to build a Forge connector, ingest external data into Atlassian, connect a third-party tool (e.g. Google Drive, ServiceNow, Salesforce) use the @forge/teamwork-graph SDK, or implement onConnectionChange / validateConnection functions.
> Optimizes Atlassian Forge apps to reduce platform consumption and avoid unnecessary costs using Atlassian's "Optimise Forge platform costs" guidance. Use when the user asks to optimize Forge app costs, reduce Forge invocations, lower GB-seconds, reduce storage or log usage, tune memory, replace polling, improve scheduled triggers, reduce KVS writes, move work to the frontend, use bridge APIs, batch API calls, add caching, or evaluate Forge Remote trade-offs. By default, perform an audit first and offer to make the recommended changes after presenting the audit. Only modify files immediately when the user explicitly asks the agent to implement or apply optimizations.
>- Update the shadow knowledge base after code changes and from conversational insights. Detects what changed via git diff, refreshes per-file shadows, captures knowledge shared by the user during the session, and updates cross-cutting discoveries. Invoke manually with /shadow-frog-update; the preToolUse hook will remind the agent when the shadow is behind HEAD.
>- Initialize a shadow knowledge base for any codebase. Creates a .shadow/ directory that mirrors the source tree with markdown files for AI-discovered insights. Run this once per repo before using other shadow-frog skills. Refuses to overwrite an existing .shadow/ unless --reset is passed.
>- Run autonomous experimentation while the user is AFK. Uses 6 investigation categories (investigation, bug hunting, feature design, refactoring, optimization, security audit) to systematically discover non-obvious behaviors. Every task is an experiment — implement in worktrees, commit to persistent dream branches, and push to the fork. Dreams compound building a tree of progressively deeper work. Invoke when the user is AFK or asks for a dream run.
>- Use a shadow knowledge base to understand any codebase. The .shadow/ directory mirrors the source tree with markdown files containing behavioral insights — known bugs, edge cases, implicit contracts, and user preferences. Always check the shadow before editing, debugging, or investigating code. When the user shares important context, write it to the shadow immediately. Invoke shadow-frog-init to create it, shadow-frog-update to refresh it, shadow-frog-dream for autonomous exploration, shadow-frog-meditate for shadow hygiene, or shadow-frog-viewer to browse it.
>- Expert-level implementation assistant for the Universal Commerce Protocol (UCP). Provides comprehensive tooling for adding UCP support to Next.js ecommerce codebases — from initial consultation through full implementation, testing, and validation.
Comprehensive guide for migrating Create React App (CRA) projects to Next.js. Use when migrating a CRA app, converting React Router to file-based routing, or adopting Next.js patterns like Server Components, App Router, or image optimization.
Build accessible UI with Primer React, GitHub's design system (Button, IconButton, TextInput, Textarea, Select, Checkbox, FormControl, Heading, Text, Stack, Label, CounterLabel, Flash, StateLabel, BranchName, ProgressBar, Spinner, Timeline, RelativeTime). Use when the user asks for a Primer-styled page, a GitHub-style screen, or wires Primer tokens through @primer/primitives. Triggers: 'primer', 'primer react', '@primer/react', 'github ui', 'octicons'. Scope: components, tokens, assets. Out of scope: tone of voice and marketing copy — route copy rules to a sibling skill. IMPORTANT: this file is an orchestrator. Load the references/ files named in the routing table; SKILL.md alone is insufficient.
> Use when building a new CLI tool that needs one-line install via uv or npm, subcommand dispatch with a default action, or 3-tier config resolution (CLI flags, config file, hardcoded defaults).
Review changed code for reuse, quality, and efficiency, then fix any issues found.
> Use when building an Amplifier-powered workflow or automation tool and deciding how to expose it — as standalone .dot attractor pipelines (incl. inside the Resolve dot-graph resolver), an importable Python lib, agent-callable tool modules, or a CLI. Covers the four leverage levels, the DRY rule that keeps logic in ONE home, the judgment for which levels a real consumer actually needs (and when adding a level is just ceremony), and the maximally-DRY attractor-only specialization where the .dot pipeline is the sole logic home.
> Use when building an HTTP service with FastAPI lifecycle management, background poll loops, SPA static file serving with API reverse proxy, bidirectional WebSocket relay, or SSE event streaming.