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Found 470 Skills
Use when writing, fixing, editing, or refactoring TypeScript tests, especially slow or flaky tests, skipped or focused tests, happy-path-only coverage, missing boundaries, brittle fixtures, coverage gaps, or multi-concept tests.
Expert evaluator for Grafana Loki label strategy. Audits, designs, and improves label schemas using cardinality scoring, access-pattern alignment, static vs. dynamic label rules, and consistency checks. Use when the user asks to evaluate, audit, design, or improve a Loki label strategy — or asks why their Loki queries are slow.
Investigates distributed application performance using PostHog APM (OpenTelemetry span) data via MCP. Use when the user asks about service traces, slow HTTP/database spans, error spans, trace IDs, or span attributes — not LLM analytics traces or product logs. Uses posthog:query-apm-spans, posthog:apm-trace-get, posthog:apm-services-list, posthog:apm-attributes-list, and posthog:apm-attribute-values-list.
Use when loading all data upfront. Use when initial page load is slow. Use when fetching data that might not be needed.
Alibaba Cloud Elasticsearch instance diagnosis skill. Use for cluster health checks, troubleshooting, and performance analysis on Elasticsearch instances. Triggers (English): Elasticsearch diagnosis, ES instance issues, slow search, write failures, cluster Red/Yellow, unassigned shards, node disconnected, load imbalance, thread pool 429, JVM/OOM/circuit breaker, disk watermark / read-only index, instance activating / change stuck, service avalanche / all shards failed. 触发词（中文）: ES诊断、阿里云ES、Elasticsearch诊断、ES集群/实例故障排查、ES健康检查、集群红灯/变红/黄灯/变黄、集群异常、分片未分配、主分片未分配、节点掉线/离线、负载不均衡、搜索/查询变慢、慢查询、写入失败/变慢/拒绝、线程池打满、HTTP 429、内存过高、OOM、断路器、磁盘满/水位、索引只读、实例激活中/activating、变更卡住/未完成、雪崩、服务不可用、all shards failed。
Diagnose Harness pipeline executions via MCP. Analyzes any execution (failed or successful) to produce structured reports with stage/step breakdown, timing, bottlenecks, failure details, chained pipeline drill-down, and execution logs. Use when asked to debug a pipeline, investigate a failure, find out why a build failed, analyze pipeline errors, check execution logs, review execution performance, or find bottlenecks. Trigger phrases: debug pipeline, pipeline failed, why did my build fail, analyze failure, pipeline error, execution logs, fix pipeline, execution bottleneck, slow pipeline.
Generate a soak test protocol for extended play sessions. Defines what to observe, measure, and log during long play sessions to surface slow leaks, fatigue effects, and edge cases that only appear after sustained play. Primarily used in Polish and Release phases.
Redis observability guidance — which metrics to monitor (memory, connections, hit ratio, ops/sec, rejected connections), which built-in commands to reach for during incident triage (SLOWLOG, INFO, MEMORY DOCTOR, CLIENT LIST, FT.PROFILE), and when to use the Redis Insight GUI. Use when setting up monitoring or alerts for a Redis instance, diagnosing a performance regression, profiling a slow FT.SEARCH query, or wiring Redis metrics into Prometheus, Datadog, or similar.
Cloudflare Workers performance optimization with CPU, memory, caching, bundle size. Use for slow workers, high latency, cold starts, or encountering CPU limits, memory issues, timeout errors.
This skill helps launch and configure the Chrome DevTools MCP server, giving Claude visual access to a live browser for debugging and automation. Use when the user asks to set up browser debugging, launch Chrome with DevTools, configure chrome-devtools-mcp, see what my app looks like, take screenshots of my web application, check the browser console, debug console errors, inspect network requests, analyse API responses, measure Core Web Vitals or page performance, run a Lighthouse audit, test button clicks or form submissions, automate browser interactions, fill out forms programmatically, simulate user actions, emulate mobile devices or slow networks, capture DOM snapshots, execute JavaScript in the browser, or troubleshoot Chrome DevTools MCP connection issues. Supports Windows, Linux, and WSL2 environments.
Learn how to create an interactive, draggable DOM using a Lit web component with CSS transforms and slots, enabling you to manipulate HTML and SVG elements within a canvas-like environment.
Removes AI-generated code slop from git diffs to maintain code quality