Development skills

Browse reusable Agent Skills, each with a clear purpose and practical guidance.

distributed-systems

Distributed systems patterns expert covering CAP theorem, consensus algorithms (Raft, Paxos), distributed transactions (2PC, saga), consistent hashing, gossip protocols, vector clocks, leader election, distributed locking, and eventual consistency. Use when the user asks about distributed systems, distributed systems best practices, or needs guidance on distributed systems implementation. Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.

543 repo starsObserved in 1 repos
Development
GitHub

git-pr-workflow

Guides expert-level git pr workflow implementation: version-control and best-practices decision frameworks, production-ready patterns, and concrete templates for git pr workflow workflows. Use when the user asks about git pr workflow, git pr workflow configuration, or version-control best practices for git projects. Do NOT use when the user needs a different developer tools capability -- check sibling skills in the developer tools subcategory.

543 repo starsObserved in 1 repos
Development
GitHub

go-error-handling

Guides expert-level Go error handling: error wrapping with %w, sentinel errors vs custom error types, errors.Is and errors.As patterns, error groups, and structured error propagation. Use when the user asks about Go error handling, error wrapping, sentinel errors, errors.Is, errors.As, custom error types, error propagation. Do NOT use when the user asks about Go idioms (use `go-idioms`), Go concurrency (use `go-concurrency-patterns`), Go performance (use `go-performance`).

543 repo starsObserved in 1 repos
Development
GitHub

npm-dependency-doctor

Fix npm dependency conflicts, audit vulnerabilities, resolve lockfile issues, and plan upgrades - with exact commands for every common npm problem. Use when the user asks about npm dependency doctor, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of npm dependency doctor or requires a different specialized skill.

543 repo starsObserved in 1 repos
Development
GitHub

react-native-runtimes

Install, configure, and write code with the @react-native-runtimes/core and @react-native-runtimes/state packages — named secondary React Native (Hermes) runtimes for rendering components, scheduling awaitable functions, and running headless background work, plus the C++-backed shared Zustand store. Use whenever the user mentions threaded runtimes, secondary runtimes, OnRuntime, ThreadedScreen, threadedComponent, runtimeFunction, the `'background'`/`'main'` function directives, ThreadedRuntime.prewarm/runHeadlessTask, the `.threaded-runtime/entry.js` Metro generated file, createSharedStore / store.path, or wants to move long lists, chat screens, or sync engines off the main JS thread. Also use when migrating from react-native-worklets-core, react-native-multithreading, or raw JSI worklets.

543 repo starsObserved in 1 repos
Development
GitHub

rust-ffi-patterns

Guides advanced Rust FFI design: C interop with extern, unsafe patterns, bindgen for header generation, cross-language memory management, and safe wrapper design. Use when the user asks about Rust FFI, extern C, unsafe, bindgen, cbindgen, cross-language memory, safe wrappers. Do NOT use when the user asks about Rust ownership (use `rust-ownership-patterns`), Rust performance (use `rust-performance`), Rust project setup (use `rust-project-setup`).

543 repo starsObserved in 1 repos
Development
GitHub

typescript-runtime-safety

Guides runtime type validation in TypeScript with Zod: schema design, branded types, type guards, runtime validation at application boundaries, and parse-not-validate patterns. Use when the user asks about Zod schemas, runtime validation, branded types, type guards, parse-not-validate, API boundary validation. Do NOT use when the user asks about TypeScript type system features (use `typescript-type-patterns`), project setup (use `typescript-project-setup`), testing (use `javascript-testing-patterns`).

543 repo starsObserved in 1 repos
Development
GitHub

web-scraping-engineer

Web scraping engineering expert covering Puppeteer and Playwright browser automation, headless scraping patterns, data extraction techniques, rate limiting and throttling, robots.txt compliance, anti-bot detection awareness, legal considerations, structured data extraction, and scraping architecture at scale. Use when the user asks about web scraping engineer, web scraping engineer best practices, or needs guidance on web scraping engineer implementation. Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.

543 repo starsObserved in 1 repos
Development
GitHub

api-conventions

MX Space API design conventions. Apply when writing controllers, API endpoints, or handling HTTP requests.

542 repo starsObserved in 1 repos
Development
GitHub

backpack-css-vars-migration

Migrate a Backpack component's SCSS mixin from static SASS tokens to CSS custom properties (CSS vars) for light/dark mode support, while preserving SASS tokens as fallbacks. Use when: (1) a component needs light/dark mode theming via the new CSS var system, (2) a component still uses bare SASS token values (e.g. tokens.$bpk-text-primary-day) instead of var() declarations, (3) you need to wire up BpkThemeProvider overrides to the new CSS var names. Covers the full migration: SCSS mixins, themeAttributes.tsx, stories, and tests.

542 repo starsObserved in 1 repos
Development
GitHub