Tools

Connects Upstash's hosted Context7 remote MCP to fetch current, version-specific docs and code examples for libraries on demand, reducing outdated or invented APIs. No local Node needed; works anonymously, and an API key raises limits. Maintained by Upstash.

Connects Claude Code to Shopify's Ruby LSP for code intelligence and analysis of .rb, .rake, .gemspec, .erb and other files. Needs Ruby 3.0+; run gem install ruby-lsp first. Official Anthropic plugin.

Anthropic's official plugin marketplace, built into Claude Code by default, with 300+ official and partner plugins for development, security, design and office collaboration. Browse and install with /plugin.

Audits whether CLAUDE.md matches the current codebase and scores its quality, and /revise-claude-md writes lessons from the current session back into project memory. Official Anthropic plugin.

Official Asana plugin in Claude's plugin marketplace: connects Claude Code to the Asana V2 MCP server to create and manage tasks, search projects, change assignees and track progress. Create your own Asana OAuth app first, then run /asana-setup after installing.

Google's official Firebase plugin: starts the Firebase MCP via firebase-tools to manage projects, Firestore data, Auth users and security rules, and view Crashlytics and Cloud Functions logs. Needs Node.js and a Firebase CLI login.

Simplifies and tidies recently changed code without changing behavior: reduces nesting and redundancy, improves naming and follows the project conventions in CLAUDE.md. Official Anthropic plugin.

Has the agent build single-file HTML interactive playgrounds: visual controls on one side, live preview on the other, and a prompt to copy back into Claude. Templates for design tuning, data exploration, concept maps, doc annotation, code review and architecture diagrams. By Anthropic.

Connects Claude Code to a TypeScript/JavaScript language server for go-to-definition, find references and live type error checking. Install typescript-language-server globally first. Official Anthropic plugin.

Anthropic's official Telegram channel plugin (research preview): connects a Telegram bot to a running Claude Code session so you can message the agent and get replies from your phone, with pairing and allowlist access control. Needs Bun and a BotFather token; launch with --channels.

Official Anthropic plugin that reads local session logs in ~/.claude/projects and generates an interactive HTML usage report covering tokens, cache hit rate, subagents, skills and the most expensive prompts, with optimization tips. Needs Node.js.

Implements the Ralph Wiggum loop with a Stop hook: feeds Claude the same prompt repeatedly so it keeps iterating on its previous file changes until it outputs a completion marker or hits the iteration limit. Official Anthropic plugin.

Connects Claude Code to rust-analyzer so the agent can go to definitions, find references and analyze symbols and call relationships in Rust code. Install rust-analyzer via rustup or a package manager first. Official Anthropic plugin.

Official Anthropic plugin that builds a shareable status page for big multi-track projects such as migrations, launches or research: goals, workstream order, next steps and risks; say 'refresh' to update the same link. Needs a claude.ai login; Artifacts are a beta for Team and Enterprise plans.

Wraps Microsoft's Playwright MCP so agents can drive a real browser to navigate, click, fill forms and take screenshots for end-to-end tests and page checks. In Anthropic's official marketplace; needs Node.js.

Designs and builds MCP servers: first picks a deployment model among remote HTTP, MCPB bundles and local stdio, then guides tool design, auth and in-chat interactive components. Maintained by Anthropic.

Official Linear plugin in Anthropic's marketplace: connects the hosted Linear MCP to create and update issues, manage projects and states, and search across workspaces from chat. Needs a Linear account and OAuth authorization.

Connects Claude Code to gopls, Go's official language server, for code intelligence, refactoring and analysis. Install gopls with go install and add Go's bin directory to PATH first. Official Anthropic plugin.

Modernizes legacy codebases: assesses the current state, maps dependencies, extracts business rules and plans the migration, then upgrades or rewrites, running old and new code on the same inputs to prove identical behavior. Official Anthropic plugin.

Creates or improves Agent Skills from scratch: writes eval cases to test them, runs benchmarks with variance analysis, and tunes descriptions for more accurate triggering. Maintained by Anthropic.

Anthropic's official Discord channel plugin: connects a Discord bot to a running Claude Code session so you can message the agent and get replies and attachments in DMs or chosen channels, with built-in pairing and allowlist access control. Needs Bun and a bot token; launch with --channels.

Simple, fast alternative to find with intuitive syntax and regex and glob matching, skipping hidden and .gitignored paths by default. Can run commands on results in parallel; handy for agents locating files quickly.

Turns common prompts such as summarizing, extracting insights and rewriting into reusable patterns you pipe text, web pages or YouTube transcripts through, using many model providers or local Ollama. Can also run as a REST API. Run fabric --setup first to configure models.

Lightweight multi-protocol command-line downloader that fetches in parallel segments from multiple sources over HTTP(S), FTP, SFTP, BitTorrent and Metalink. Resumes downloads, reads URLs in bulk from text files and offers a JSON-RPC interface for scripts or agents.