Master error handling patterns across languages including exceptions, Result types, error propagation, and graceful degradation to build resilient applications. Use when implementing error handling, designing APIs, or improving application reliability.

Master systematic debugging techniques, profiling tools, and root cause analysis to efficiently track down bugs across any codebase or technology stack. Use when investigating bugs, performance issues, or unexpected behavior.

Design and build native-feeling macOS application UIs. Use this skill whenever the user asks to create a desktop app, macOS app, Mac-style interface, Apple-style UI, system utility, or anything that should look and feel like a native Mac application. Also trigger when users mention "native feel", "desktop app design", "Apple design patterns", "sidebar layout", "traffic lights", or want to build tools/utilities that feel like they belong on macOS. This skill covers layout, composition, interaction patterns, animations, light/dark mode, and all the subtle details that make an app feel like Apple built it.

Automatically generate clear, actionable issue reports from failing tests and repository analysis. Analyze test failures to understand expected vs. actual behavior, identify affected code components, and produce well-structured Markdown reports suitable for GitHub Issues or similar trackers. Use when a test fails, when debugging issues, or when the user asks to create an issue report, generate a bug report, or document a test failure.

Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules. Use when managing multi-environment configurations, detecting config drift, validating configuration changes, or ensuring consistency across microservices. Supports JSON, YAML, TOML, INI, XML, .env, and properties files. Identifies security issues like hardcoded secrets and provides actionable resolution guidance.

Query OpenSea marketplace data via the official CLI, SDK, MCP server, or shell scripts. Get floor prices, collection stats, NFT details, token data, trending collections, drops, events, search, favorites, profile and collection settings, and other wallet-scoped operations. For trading use opensea-marketplace, for token swaps use opensea-swaps.

Manage world migrations, handle breaking changes, and upgrade Dojo versions. Use when updating deployed worlds, migrating to new versions, or handling schema changes.

Manage world migrations, handle breaking changes, and upgrade Dojo versions. Use when updating deployed worlds, migrating to new versions, or handling schema changes.

Constant-time testing detects timing side channels in cryptographic code. Use when auditing crypto implementations for timing vulnerabilities.

Deploy Langfuse with your application across different platforms. Use when deploying Langfuse to Vercel, AWS, GCP, or Docker, or integrating Langfuse into your deployment pipeline. Trigger with phrases like "deploy langfuse", "langfuse Vercel", "langfuse AWS", "langfuse Docker", "langfuse production deploy".

Implement Ideogram reference architecture with prompt templates, asset pipelines, and CDN delivery. Use when designing new Ideogram integrations, building brand asset systems, or establishing architecture for image generation at scale. Trigger with phrases like "ideogram architecture", "ideogram project structure", "ideogram brand assets", "ideogram pipeline design", "ideogram at scale".

Implement enterprise role-based access control for Gamma integrations. Use when configuring team permissions, multi-tenant access, or enterprise authorization patterns. Trigger with phrases like "gamma RBAC", "gamma permissions", "gamma access control", "gamma enterprise", "gamma roles".

Remote-control tmux sessions for interactive CLIs by sending keystrokes and scraping pane output.

Configure Customer.io CI/CD integration with automated testing. Use when setting up GitHub Actions, integration test suites, or pre-commit validation for Customer.io code. Trigger: "customer.io ci", "customer.io github actions", "customer.io pipeline", "customer.io automated testing".

Route trades across multiple DEXs to find optimal prices with minimal slippage and gas costs. Use when comparing DEX prices, finding optimal swap routes, analyzing price impact, splitting large orders, or assessing MEV risk. Trigger with phrases like "find best swap", "compare DEX prices", "route trade", "optimal swap route", "split order", "DEX aggregator", "check slippage", or "MEV protection".

Monitor and log API requests with correlation IDs, performance metrics, and security audit trails. Use when auditing API requests and responses. Trigger with phrases like "log API requests", "add API logging", or "track API calls".

AWS Step Functions workflow orchestration with state machines. Use when designing workflows, implementing error handling, configuring parallel execution, integrating with AWS services, or debugging executions.

AWS Cognito user authentication and authorization service. Use when setting up user pools, configuring identity pools, implementing OAuth flows, managing user attributes, or integrating with social identity providers.

Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.