Flags

Verify

react

Runs a fixed sequence of formatting, linting, type-checking and testing steps to validate changes before committing.

Test

react

Runs React core tests by mapping a channel and test pattern to the right yarn test command.

Flow

react

Runs Flow type checking on React code and reports type errors with file locations.

Fix

react

Runs project formatting and lint commands to fix code style issues before committing.

Feature Flags

react

Guides React contributors on feature flag files, @gate test gating, adding flags, and debugging channel-specific test failures.

Extract Errors

react

Runs a project script to extract React error codes and reports whether new errors need codes assigned.

Playground

anthropics

Featured

Builds self-contained interactive HTML playgrounds with controls, live preview, and copyable prompt output.

M5 Onboard

anthropics

Featured

Provisions M5Stack ESP32 boards by detecting them on USB, flashing UIFlow 2.0 firmware, and installing a MicroPython app bundle.

Cardputer Buddy

anthropics

Featured

Guides iterating on a Cardputer-Adv MicroPython app bundle: adding apps, pushing files over USB-serial, tailing logs, and running REPL commands.

Web Design Guidelines

vercel-labs

Featured

Reviews UI code against Web Interface Guidelines fetched from a remote source and reports findings as file:line entries.

Vercel React Native Skills

vercel-labs

Featured

React Native and Expo best-practice rules covering list performance, animation, navigation, UI patterns, state, and monorepo setup.

Vercel React Best Practices

vercel-labs

Featured

Vercel's React and Next.js performance guidelines, organized as 70 rules for writing, reviewing, and refactoring code.