agent-skills

Set up and manage React Native (Expo/EAS) Android releases via GitHub Actions. Use when the user needs to (1) configure the Android release pipeline (local EAS build, version bump, Google Play submit), (2) create or modify the GitHub Actions release workflow (android-release.yml), (3) set up or debug eas.json build/submit profiles, (4) configure the Google Play service-account credential as a base64 secret, (5) wire EXPO_TOKEN and EAS-managed signing keystore, (6) bump app.json version from a release tag with EAS remote versionCode auto-increment, (7) publish an AAB to the Google Play internal track via EAS Submit, or (8) fall back to a bare React Native Gradle + Fastlane path when not using Expo managed workflow.

Build a macOS app that hosts its own in-app UI extension using Apple's ExtensionKit / ExtensionFoundation (AppExtension, AppExtensionPoint, EXHostViewController, NSXPC). Use when creating a host app + bundled app-extension target, defining a custom extension point, sharing an API/XPC contract core between host and extension, embedding extension SwiftUI inside the host, wiring bidirectional host↔extension messaging, or debugging extension discovery/activation failures (OSStatus -10814, "Failed to get extension process and XPC endpoints", LSRegisterURL -10819).

Iterate on algorithmic trading strategies in ArgoTradingSwift (`.rxtrading` documents) via the embedded MCP server. Use when the user wants to write, build, backtest, or improve Go-based trading strategies that compile to WASM, load a `.wasm` strategy into the app, run a backtest against a schema/dataset, or analyze backtest results (stats.yaml + per-trade parquet). Triggers include phrases like "write a trading strategy", "backtest this strategy", "beat buy-and-hold", "load_strategy", "run_backtest", and any mention of argo-trading, ArgoTradingSwift, or `.rxtrading` files.

Set up and manage macOS app releases with Sparkle auto-update via GitHub Actions. Use when the user needs to (1) configure the macOS release pipeline (build, sign, notarize, distribute), (2) integrate Sparkle framework for auto-updates in a Swift macOS app, (3) create or modify the GitHub Actions release workflow (macos-release.yml), (4) generate or debug Sparkle appcast.xml feeds, (5) configure or rotate signing/notarization secrets, (6) set up GitHub Pages deployment for appcast hosting, (7) write or update CI scripts for code signing, notarization, or appcast generation, or (8) troubleshoot DMG creation, notarization failures, or Sparkle update issues.

Manage the two-stage iOS release pipeline using GitHub Actions for CI/semantic versioning and Xcode Cloud for App Store distribution. Use when the user needs to (1) trigger a new iOS release, (2) understand or modify CI workflows (ios-ci.yml, ios-setup.yml, create-release.yaml), (3) debug version bumping or Xcode Cloud builds, (4) update the ci_post_clone.sh script, (5) configure or rotate CI secrets, (6) understand conventional commit conventions for version bumps, or (7) troubleshoot failed releases or TestFlight submissions.

Set up and maintain OpenAPI 3.0 integration between a Next.js backend and a Swift iOS client. Use when the user needs to (1) set up OpenAPI spec generation from Zod schemas using next-openapi-gen, (2) configure Swift OpenAPI generator for an iOS package, (3) create or update API routes with JSDoc annotations, (4) create Zod schemas for API contracts, (5) sync the OpenAPI spec between backend and iOS, (6) create Swift service layers wrapping generated API clients, or (7) troubleshoot OpenAPI generation or Swift type issues.

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.

Implement OAuth 2.0 authentication for Next.js backend and iOS Swift apps. Use when setting up OAuth/OIDC authentication, configuring Auth.js (NextAuth v5), implementing PKCE flow for iOS, adding Bearer token support, creating auth middleware, setting up token storage/refresh, or writing E2E tests with mock authentication. Covers the full auth stack from provider configuration through session management.