create-mf2-app

This repo's own conventions for writing Convex functions in

Turn a product idea into a structured build plan and parallel execution strategy for this MF2 scaffold. Use when the user describes a product, app, or startup idea to build on this scaffold, asks where to start, how to plan or parallelize a build, or what the scaffold already provides, even if they do not mention mf2 by name. Probes once for the requirements that change the plan (B2B vs B2C, monetization, realtime collaboration, AI features, target surfaces, content and marketing, notifications), maps every feature to the specific capability the template already ships so nothing gets rebuilt, writes BUILD-PLAN.md at the project root, and splits the work into parallel workers with dependency edges and quality gates.

Add Arcjet security protection to any code path — HTTP route handlers, API endpoints, AI agent tool calls, MCP servers, background jobs, and queue workers. Covers rate limiting, bot detection, email validation, prompt injection detection, sensitive information blocking, and abuse prevention. Works across Next.js, Express, Fastify, SvelteKit, Remix, Bun, Deno, NestJS, FastAPI, Flask, and non-HTTP contexts. Use this skill when the user wants to add security, rate limiting, bot protection, or abuse prevention to any part of their application — whether they say "protect my API," "rate limit tool calls," "block bots," "secure my endpoint," "add security to my MCP server," or "prevent abuse" without mentioning Arcjet specifically.

Deploy Expo apps to production with EAS — build and submit to the iOS App Store, Google Play Store, and TestFlight, configure eas.json build and submit profiles, manage app versions and build numbers, publish App Store metadata and ASO, and deploy web bundles and API routes via EAS Hosting. Use whenever the user is preparing a production build, running eas build or eas submit, shipping to TestFlight, releasing or rolling out to the app stores, bumping version or build numbers, or setting up store listing metadata for an Expo app.

Build Expo app for development

Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling

Use when implementing or debugging ANY network request, API call, or data fetching. Covers fetch API, React Query, SWR, error handling, caching, offline support, and Expo Router data loaders (`useLoaderData`).

Guides Stripe integration decisions — API selection (Checkout Sessions vs PaymentIntents), Connect platform setup (Accounts v2, controller properties), billing/subscriptions, Treasury financial accounts, integration surfaces (Checkout, Payment Element), migrating from deprecated Stripe APIs, and security best practices (API key management, restricted keys, webhooks, OAuth). Use when building, modifying, or reviewing any Stripe integration — including accepting payments, building marketplaces, integrating Stripe, processing payments, setting up subscriptions, creating connected accounts, or implementing secure key handling.

Turborepo monorepo build system guidance. Triggers on: turbo.json, task pipelines, dependsOn, caching, remote cache, the "turbo" CLI, --filter, --affected, CI optimization, environment variables, internal packages, monorepo structure/best practices, and boundaries. Use when user: configures tasks/workflows/pipelines, creates packages, sets up monorepo, shares code between apps, runs changed/affected packages, debugs cache, or has apps/packages directories.