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Official AWS Labs MCP server that gives troubleshooting agents task-oriented access to Amazon CloudWatch metrics, alarms, logs, and PromQL queries for AI-assisted root-cause analysis and remediation recommendations.

Official Alpaca MCP server for Trading API workflows, including account and portfolio data, orders, positions, watchlists, assets, stocks, crypto, options, news, corporate actions, and market data.

Local code indexing MCP server that lets AI assistants search repositories, build symbol indexes, inspect file summaries, monitor changes, and navigate multi-language codebases.

A PostToolUse hook that runs the matching test runner for a changed file's language — Jest or Vitest for JS/TS, pytest for Python, go test, or Maven/Gradle for Java — scoped to the edited file.

Automatically run relevant tests when code changes are detected, with intelligent test selection and parallel execution.

PostToolUse hook that watches dependency manifest and lockfile edits, then prompts or runs an OSS Review Toolkit dependency license analysis.

A CLAUDE.md rule that drives test-first development with Vitest: write a failing Vitest test, add the minimum code to pass, then refactor. It covers vitest.config setup, expect assertions, vi mocks and fake timers, coverage thresholds, and running specs in watch mode or once with vitest run.

A PostToolUse hook that watches for edits to Docker-related files (Dockerfile, docker-compose, .dockerfile, .dockerignore).

Transform Claude into a Vitest specialist with deep knowledge of fast unit testing, mocking, coverage, watch mode, and Vite-native test configuration.