Melvynx

Connect every external account NowStack Mobile needs (Convex, Expo/EAS, Apple Developer, Vercel, Stripe, Google Play) by acquiring PROGRAMMATIC API ACCESS for each, then doing everything automatically through that access. Use for "setup accounts", "connect my accounts", first-run onboarding, or when check-setup reports CLI/auth gaps. The skill obtains a token/key per service, stores it in the right place, and only asks the user for the irreducible manual steps (browser signup, 2FA, one-time key download). Every account is skippable.

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Route NowStack Mobile Convex work to the right skill. Use for underspecified Convex backend, schema, auth, migration, performance, component, or env tasks.

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Cut a NowStack Mobile release. Bump version, generate changelog, and promote existing TestFlight/Play internal builds to production. Does not rebuild.

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Build a NowStack Mobile iOS app and upload it to TestFlight. Always check OS first: macOS uses local `eas build --local`; Windows/Linux must run ns-setup-expo and use EAS cloud.

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Use when optimizing Convex database read bandwidth, documents-read cost, query indexes, full-table scans, function-level usage dashboard findings, or code that uses .filter(), unbounded .collect(), N+1 reads, or expensive reactive Convex queries.

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Optimize NowStack Mobile across Convex, Expo, and TanStack Start. Use for performance, state, subscriptions, rendering, routing, forms, mobile UI, bundle, or data-fetching improvements.

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Create a lean, mobile-aware Product Requirements Document for a NowStack Mobile app through interactive discovery, then save it to .agents/plan/PRD.md. Use for "write a PRD", "ns prd", "define the product", "plan my app", or as the first planning step before ns-architecture and ns-tasks. Mobile-flavored — personas, onboarding/paywall flow, platforms (iOS/Android/web), IAP vs subscription monetization, store scope. Feeds ns-init-project (site-config) and the rest of the planning pipeline.

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Audit and remediate NowStack Mobile security flaws. Use for auth/session abuse, Apple or Stripe payment bypass, Convex authorization, cross-user data leaks, unsafe deep links, R2 uploads, client secrets, SSRF, XSS, or pentest follow-up.

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Plan safe Convex schema and data migrations. Use for widen-migrate-narrow rollouts, backfills, breaking field changes, table splits, or failed schema deploys.

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First-run setup wizard for a freshly cloned NowStack Mobile. Installs the machine's CLIs, connects every account, wires Convex, creates YOUR own clean Git repo, gathers the product brief, then rebrands the boilerplate into your app. Use for "set up my project", "initial setup", "onboard me", "ns onboard", "I just cloned this", or the very first run.

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Read and write the user's SaveIt.now bookmarks from the terminal or from JS/TS code, via the official `saveitnow` npm package (CLI + SDK). Handles its own install and API-key setup on first use. Use whenever the user mentions SaveIt, saveit.now, "my bookmarks", "my saved links", "my reading list", asks to save/bookmark a URL, to search what they saved, or to pick something to read.

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Complete guide for building beautiful apps with Expo Router. Covers fundamentals, styling, components, navigation, animations, patterns, and native tabs.

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Build reusable Convex components with isolated tables and app-facing wrappers. Use for defineComponent, app.use, ComponentApi, or shared backend modules.

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Audit Convex performance for hot reads, write contention, subscriptions, function limits, OCC conflicts, latency, read amplification, and expensive reactive queries.

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Creates or adds Convex to an app. Use for new Convex projects, npm create convex@latest, frontend setup, env vars, or the first npx convex dev run.

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Set up Convex authentication and authorization. Use for Convex Auth, Better Auth, Clerk, Auth0, JWT providers, auth.config.ts, protected functions, and user mapping.

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Routes general Convex requests to the right project skill. Use when the user asks which Convex skill to use or gives an underspecified Convex app task.

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Expo's official example projects — the expo/examples repo of ~70 `with-*` integrations (Stripe, Clerk, Supabase, OpenAI, maps, Reanimated, SQLite, Skia, NativeWind, and more). Use when integrating a third-party library or service into an existing Expo app and you want the canonical, version-matched pattern to adapt, or when scaffolding a new project from one with `npx create-expo --example`.

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Build native UI with the @expo/ui package: real SwiftUI on iOS and Jetpack Compose on Android rendered from React in an Expo or React Native app. Covers universal cross-platform components (Host, Column, Row, Button, Text, List, and more imported from @expo/ui), drop-in replacements for popular React Native community libraries (BottomSheet, DateTimePicker, Slider, Menu, etc.), and platform-specific SwiftUI (@expo/ui/swift-ui, iOS only) and Jetpack Compose (@expo/ui/jetpack-compose, Android only) trees and modifiers. Use when adding or reviewing @expo/ui Host/RNHostView trees, building native-feeling UI where standard React Native components fall short (grouped settings forms with toggles, sections, menus, sheets, pickers, sliders), choosing between universal and platform-specific components, or replacing an RN community UI library with a native @expo/ui equivalent. Not for custom native modules, Expo Router navigation, Reanimated, or data fetching.

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Integrate PostHog analytics into Expo apps. Use for posthog-react-native setup, providers, screen tracking, env config, identify calls, and error tracking.

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