发现 Skills

YouTube thumbnail design with specific dimensions, contrast rules, and mobile preview optimization. Covers safe zones, text placement, face expression psychology, and A/B testing. Use for: YouTube thumbnails, video cover images, click-through optimization. Triggers: youtube thumbnail, thumbnail design, video thumbnail, click through rate, ctr optimization, youtube cover, video cover image, thumbnail maker, thumbnail tips, youtube design, video preview image

When the user needs marketing ideas, inspiration, or strategies for their SaaS or software product. Also use when the user asks for 'marketing ideas,' 'growth ideas,' 'how to market,' 'marketing strategies,' 'marketing tactics,' 'ways to promote,' or 'ideas to grow.' This skill provides 139 proven marketing approaches organized by category.

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.

· Hunt for novel vulnerabilities in source code, binaries, or live systems - reverse engineering, patch diffing, fuzzing, attack surface mapping, PoC development, and responsible disclosure. Triggers: 'zero-day', '0-day', 'vulnerability research', 'variant analysis', 'patch diffing', 'fuzz', 'exploit dev', 'CVE', 'PoC', 'reverse engineering'. Not for SAST scanning (use security-audit), post-exploitation (use lockpick), or code correctness (use code-review).

Use when you need to design, review, or improve REST APIs with Spring Boot — including HTTP methods, resource URIs, status codes, DTOs, versioning, deprecation and sunset headers, content negotiation (JSON and vendor media types), ISO-8601 instants in DTOs, pagination/sorting/filtering, Bean Validation at the boundary, idempotency, ETag concurrency, HTTP caching, error handling, security, contract-first OpenAPI (OpenAPI Generator), controller advice, and problem details for errors. This should trigger for requests such as Review Java code for Spring Boot REST API; Apply best practices for Spring Boot REST API in Java code. Part of cursor-rules-java project

Reviews a test suite for meaningful assertions, coverage, and overall quality. Run after code reviews to validate that tests are significant and effective.

Assess and refactor oversized or multi-domain skills. First determines whether splitting or references/ extraction is appropriate — then executes the correct action. Use when a skill exceeds token thresholds (SK006/SK007) or covers multiple independent domains. Performs candidate assessment before any structural changes; cohesive single-intent skills are redirected to references/ extraction instead of splitting. When splitting is warranted — domain analysis gate, split plan, new SKILL.md generation, validation, and backwards-compatible facade conversion.

Install and configure Firebase Extensions for common tasks — Stripe payments, Algolia search, image resizing, and translation services. Trigger: "firebase extension", "stripe extension", "algolia extension", "resize images"

Profiling-based identification of hot paths, resource constraints, and throughput limiters. Trigger: "find bottlenecks", "hot paths", "performance profiling", "throughput limits".

Track as-built documentation and record drawings. Monitor submission status, manage revisions, and ensure completeness for handover.

Confluence Page Generator - Auto-activating skill for Enterprise Workflows. Triggers on: confluence page generator, confluence page generator Part of the Enterprise Workflows skill category.

Optimize Databricks cluster and query performance. Use when jobs are running slowly, optimizing Spark configurations, or improving Delta Lake query performance. Trigger with phrases like "databricks performance", "spark tuning", "databricks slow", "optimize databricks", "cluster performance".

Elasticsearch Index Manager - Auto-activating skill for DevOps Advanced. Triggers on: "elasticsearch index manager", "elasticsearch index manager" Part of the DevOps Advanced skill category.

Process, validate, and store Firecrawl scraped content with deduplication and chunking. Use when handling scraped markdown, implementing content pipelines, building RAG knowledge bases, or processing crawl results for downstream consumption. Trigger with phrases like "firecrawl data", "firecrawl content processing", "firecrawl markdown cleaning", "firecrawl storage", "firecrawl RAG pipeline".

Grafana Dashboard Creator - Auto-activating skill for DevOps Advanced. Triggers on: grafana dashboard creator, grafana dashboard creator Part of the DevOps Advanced skill category.

Implement Instantly PII handling, data retention, and GDPR/CCPA compliance patterns. Use when handling sensitive data, implementing data redaction, configuring retention policies, or ensuring compliance with privacy regulations for Instantly integrations. Trigger with phrases like "instantly data", "instantly PII", "instantly GDPR", "instantly data retention", "instantly privacy", "instantly CCPA".

Keyboard Navigation Tester - Auto-activating skill for Frontend Development. Triggers on: keyboard navigation tester, keyboard navigation tester Part of the Frontend Development skill category.

Production-grade Langfuse architecture patterns and best practices. Use when designing LLM observability infrastructure, planning Langfuse deployment, or implementing enterprise-grade tracing architecture. Trigger with phrases like "langfuse architecture", "langfuse design", "langfuse infrastructure", "langfuse enterprise", "langfuse at scale".

Implement intelligent API response caching with Redis, Memcached, and CDN integration. Use when optimizing API performance with caching. Trigger with phrases like "add caching", "optimize API performance", or "implement cache layer".

Mermaid Sequence Diagram Creator - Auto-activating skill for Visual Content. Triggers on: mermaid sequence diagram creator, mermaid sequence diagram creator Part of the Visual Content skill category.

Implement API migrations between versions, platforms, or frameworks with minimal downtime. Use when upgrading APIs between versions. Trigger with phrases like "migrate the API", "upgrade API version", or "migrate to new API".

This skill enables Claude to validate application performance against defined budgets. It's useful for identifying performance regressions early in the development lifecycle. The skill is triggered when the user mentions "performance budget", "validate budget", "performance regression", or requests a check against performance metrics like "page load times", "bundle sizes", "API response times", or "Lighthouse scores". The plugin validates against predefined thresholds and alerts on violations. It is especially helpful in CI/CD pipelines to prevent performance degradation in production.

Configure PostHog local development with mocking, debug mode, and testing. Use when setting up a development environment, mocking PostHog for tests, or establishing a fast iteration cycle with posthog-js or posthog-node. Trigger: "posthog dev setup", "posthog local development", "posthog dev environment", "mock posthog", "test posthog".

Production PostHog architecture: event taxonomy, SDK layering, feature flag strategy, analytics module layout, and data pipeline integration patterns. Trigger: "posthog architecture", "posthog best practices", "posthog project structure", "how to organize posthog", "posthog design".