Developer Tools & Repos Agent Skills for Grok Build

Apply when wiring validation, error handling, or framework adapters.

Implement Palantir Foundry API rate limiting, backoff, and request queuing.

Use when implementing particle effects — GPUParticles2D/3D, ParticleProcessMaterial, emission shapes, subemitters, trails, attractors…

Guides Svelte and SvelteKit development including reactive components, stores, transitions, lifecycle hooks, SSR, file-based routing, and…

Integrate Apple Pay payments and Wallet passes using PassKit.

Generate player-facing patch notes from git history, sprint data, and internal changelogs.

Select, evaluate, and combine design patterns for codebase architecture or refactoring.

Paul's modern stack conventions for new projects (pnpm, native node test, esbuild, buildless-types).

PayFit integration via Apideck's HRIS unified API — same methods work across every connector in HRIS, switch by changing `serviceId`.

Foundation for the Pennylane Company API v2 in a multi-company setup: where tokens live, how to call the API, cursor pagination, filters…

AI perception skill for sight, hearing, and threat detection systems.

Use when the user wants automated performance profiling, headless Instruments analysis, or CLI-based trace collection.

Create child communication safety experiences using PermissionKit to request parental permission for children.

App registration with Meta AI and device permission flows

Implement Perplexity rate limiting, backoff, and idempotency patterns.

Motor interpolation (slerp/nlerp) for smooth rigid body transformations in PGA

Build wallet-connected applications with the Phantom Connect SDK for Solana.

Validate readiness to advance between development phases.

Phoenix context design — creating/splitting contexts, Scope (1.8+), Ecto.Multi, PubSub, routers, plugs, controllers.

Build Phoenix perpetual futures integrations on Solana with the Rise SDK.

Reference — PHPickerViewController, PHPickerConfiguration, PhotosPicker, PhotosPickerItem, Transferable, PHPhotoLibrary, PHAsset…