Use when about to create a git commit in this project

Explain how Cairo modules are split across files and folders, and how `mod` declarations map to files; use when a request involves organizing modules into multiple files in Cairo.

Express.js framework patterns including routing, middleware, request/response handling, and Express-specific APIs. Use when working with Express routes, middleware, or Express applications.

Expert in Three.js, 3D graphics, and interactive 3D visualizations

````yaml get /v1/skills/{skill_id}

shadcn/ui component library patterns

Fetches a GitHub issue, implements the fix, and verifies it. Use when user wants to fix an issue, implement issue changes, or resolve a bug.

Talk to Nick Theriot Youtuber about their expertise. Nick Theriot Youtuber provides authentic advice using their mental models, core beliefs, and real-world examples.

Comprehensive testing strategies for Rust including property-based testing with proptest, fuzz testing with cargo-fuzz, benchmark testing with Criterion, contract testing for traits, and Miri for undefined behavior detection. Use when writing tests, ensuring code correctness, detecting edge cases, or measuring performance.

Core Node.js backend patterns for TypeScript applications including async/await error handling, middleware concepts, configuration management, testing strategies, and layered architecture principles. Use when building Node.js backend services, APIs, or microservices.

Technical analysis with TA-Lib - Moving averages, RSI, MACD, Bollinger Bands, Stochastic, ATR, candlestick patterns, and strategy signals using OpenAlgo market data

Manage Apple Search Ads campaigns, ad groups, keywords, and reports via the asa-cli tool. Use when the user asks about Apple Search Ads management, campaign operations, keyword bidding, ASA reports, or ad performance.

Process customer refunds quickly. Search by order number or email, view order details, and issue full/partial refunds with automatic customer notifications. Use for customer support, order issues, or goodwill refunds. Triggers on "refund", "issue refund", "process refund", "customer wants refund", or similar queries.

Interactive element picker for web pages. Opens a browser with click-to-select UI overlay. Use when you need to let users visually select DOM elements, identify element selectors, or get detailed element information interactively. Triggers on "select an element", "pick element", "let me choose", "which element", or any interactive element selection task. Integrates with agent-eyes for visual context.

STMicroelectronics MPN encoding patterns, suffix decoding, and handler guidance. Use when working with STM32, STM8, ST MOSFETs, or L78/L79 regulators.

Seoul Semiconductor LED MPN encoding patterns, series identification, package extraction, and color decoding. Use when working with Seoul Semi LEDs or SeoulSemiHandler.

Use the constraint-memory MCP tools to query/upsert timeboxing constraints stored in Notion.

--8<-- "includes/ccai-api-back-link.md"

Comprehensive guide for testing Vue 3 applications with Playwright (2025). This skill should be used when writing end-to-end tests or component tests for Vue apps, testing Vue Router navigation, reactive state changes, authentication flows, or setting up Playwright in Vue projects.

Analyze a traceback or error log, identify root cause, and implement the minimal fix with a short summary. Use when a traceback is provided.