Operate the official grafana/mcp-grafana server from an agent. Use when the conversation has Grafana MCP tools available and you need to query Prometheus/Loki/Pyroscope, search or edit dashboards, manage alert rules, or generate Grafana deeplinks. Covers tool selection, parameter conventions (datasource UID, time ranges, limits, query types), and context-saving patterns for dashboard work.
Analyzes an existing ISUCON-style application, designs an optimal infrastructure and architecture redesign that respects every ISUCON rule, and emits the proposal as a self-contained Agent Skill that another Claude session can read and execute. Use when starting an ISUCON contest or practice, drafting a contest-day architecture plan before touching code, or when the user asks to "design the architecture", "plan the topology", or "produce an implementation skill" for an ISUCON problem.
Decomposes the apply-skill produced by designing-isucon-architecture into atomic tasks, materializes one Claude Code subagent per task, and emits a dispatcher slash command that fires the subagents in dependency order (parallel where the graph allows). Use when an applying-isucon-arch-<slug> skill exists and the team wants the architecture rollout to run as orchestrated subagent jobs rather than a single linear human-driven session, or when the user asks to "create subagents for this ISUCON design", "wire the ISUCON apply-skill into Claude Code agents", or "split the rollout into parallel agent tasks".
Runs Visual Regression Testing (VRT) locally to prevent disqualification in Web Speed Hackathon. Captures screenshots, compares against baselines, updates snapshots, and validates visual integrity after performance optimizations. Use when optimizing WSH apps, running VRT checks, updating VRT baselines, or investigating VRT failures.
Analyzes a Web Speed Hackathon project, researches each improvement topic in depth, stores research as Agent Skills, and generates executable Claude Code commands for each optimization. Use when starting WSH optimization, creating an optimization roadmap, or generating executable improvement commands.
Ports an ISUCON-style Rust reference implementation to Go (Echo) using parallel subagents. Use when the contest provides a Rust reference but the team wants to compete in Go, or when the user asks to migrate a Rust web app to Go Echo endpoint by endpoint. Preserves API URI, request/response shape, frontend static files, the isuwari reboot/retest daemon, and the isuadmin account exactly as distributed (changing them = disqualification).
Optimizes web applications for ISUCON (Iikanji ni Speed Up Contest), a Japanese 8-hour performance tuning competition. Use when participating in ISUCON, practicing past problems (private-isu, isucon-workshop), or aggressively tuning a Go/Node.js/Ruby/PHP web app with MySQL behind nginx. Covers regulation, measurement tools (alp, pt-query-digest, pprof), N+1 elimination, indexing, caching, multi-server topology, and reboot-test pitfalls.
Optimizes deliberately slow web applications for maximum Lighthouse scores in Web Speed Hackathon (CyberAgent). Use when participating in WSH or performing aggressive frontend performance optimization on React/Node.js apps with SQLite backends. Covers bundle reduction, image optimization, Core Web Vitals, server tuning, and known competition traps.