This skill should be used when working on Polar billing system, Stripe integration, subscription lifecycle, checkout flows, or benefit provisioning.

Guide for implementing smooth, native-feeling animations using React's View Transition API (`<ViewTransition>` component, `addTransitionType`, and CSS view transition pseudo-elements). Use this skill whenever the user wants to add page transitions, animate route changes, create shared element animations, animate enter/exit of components, animate list reorder, implement directional (forward/back) navigation animations, or integrate view transitions in Next.js. Also use when the user mentions view transitions, `startViewTransition`, `ViewTransition`, transition types, or asks about animating between UI states in React without third-party animation libraries.

Skill for building applications with the `@supabase/supabase-js` SDK. Covers Auth, Database (PostgREST), Storage, Realtime, and Edge Functions.

Use when starting any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

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opam is the package manager for ocaml packages. This skill teaches you how to use it

Use when creating new Claude Code skills or improving existing ones - ensures skills are discoverable, scannable, and effective through proper structure, CSO optimization, and real examples

Parse and normalize features from text descriptions, images, and screenshots into structured requirements.

Design comprehensive system architecture with technology selection and ADRs.

Create Product Requirements Documents through structured discovery using Jobs-to-be-Done framework.

Create comprehensive product briefs from market, domain, and technical research.

System and API design guidance covering component boundaries, data flow, integration patterns, and scalability considerations.

Structured planning methodology with research, brainstorming, phased plan creation, risk assessment, and plan-to-build continuity.

Interactive PRD brainstorming and drafting with quality-gated refinement.

Git-backed state management for safe rollback. Create and restore checkpoints with tagged commits and metadata tracking.

Build structured knowledge frameworks from scattered vault notes with source attribution

Cross-domain pattern analysis with personal, professional, and project domain synthesis

Decompose goals into MEOWs (Molecular Expressions of Work) - trackable atomic units following Gas Town's bead-based work model.

YAML frontmatter parsing and manipulation for .planning/ documents. Provides read, write, update, query, and validation operations on frontmatter blocks in GSD markdown artifacts.

Plan structure validation, phase completeness checks, reference integrity verification, and artifact existence confirmation. Provides the structured verification layer ensuring GSD artifacts are well-formed and complete.

Systematic codebase exploration following the Iron Law - understand the problem before exploring code. Four phases with file-finder and web-researcher agents.

Multi-protocol consensus for agent swarms supporting Raft leader election, Byzantine fault tolerance, Gossip state propagation, and CRDT conflict-free merging.

LangChain chain composition including SequentialChain, RouterChain, and LCEL patterns

LangChain ReAct agent implementation with tool binding for reasoning and action loops

LangChain tool creation and integration utilities for agent systems

Milvus distributed vector database configuration for large-scale RAG applications

NVIDIA NeMo Guardrails configuration for conversational safety and control

Pinecone vector database setup, configuration, and operations for RAG applications

Provide implementations of advanced data structures

Select optimal data structure based on operation requirements

Model optimization problems as network flow problems

Provide number theory algorithm implementations and guidance

Match string problems to appropriate algorithms

Build and query suffix arrays and related structures

Configure HTTP/SSE transport for web-based MCP servers with proper endpoints, authentication, and CORS.

Assist in containerizing applications with Dockerfile generation and optimization

Cross-chain bridge and multi-chain development expertise. Supports LayerZero, Chainlink CCIP, Wormhole, and Axelar for omnichain messaging, token bridging, and cross-chain state verification.

Blockchain node deployment and operations. Supports Ethereum execution and consensus clients, validator operations, node monitoring, MEV-Boost configuration, and archive node management.

Token economics simulation and analysis. Supports supply modeling, staking mechanisms, liquidity mining, governance dynamics, agent-based simulations, and cadCAD integration.

Implements Change Data Capture patterns for real-time data integration

Enriches data catalog entries with automated metadata

Manages schema evolution and compatibility across data systems

MLflow integration skill for experiment tracking, model registry, and artifact management. Enables LLMs to log experiments, compare runs, manage model lifecycle, and retrieve artifacts through the MLflow API.

Build and bundle native Node.js addons for Electron with proper ABI compatibility, cross-compilation support, and rebuild automation

Register and handle custom URL protocols (deep linking) across platforms for Electron applications

Cross-platform file dialog implementation for open, save, and directory selection

Manage credentials in OS keychains across Windows, macOS, and Linux

Execute macOS code signing with Developer ID and hardened runtime requirements

Build native OS notifications with actions, images, and progress indicators across platforms

Configure Neutralino.js for lightweight desktop applications