Tools

Fast async link checker written in Rust that scans websites and Markdown, HTML and other files for broken links and email addresses, with JSON output, config files and an official GitHub Action, often wired into docs CI.

Terminal tool for offline IP geolocation and CDN provider lookup, supporting QQwry, GeoIP2, ip2region and other databases. Pipe output from dig, nslookup and similar commands through it to annotate IPs automatically.

Hugging Face's official hf CLI: search, download and upload models and datasets, manage repos and storage buckets, and run jobs on Hugging Face's cloud. Output adapts automatically for agents, and hf skills add installs companion skills. Uploads and similar actions need a login.

NVIDIA's official plugin that finds and installs the right skills from NVIDIA's catalog for your task, spanning CUDA acceleration, NIM inference, NeMo training, RAG blueprints, Omniverse simulation and robotics. Listed in both the Claude and Codex official marketplaces.

NVIDIA's official, verified catalog of hundreds of skills covering CUDA-X libraries, NeMo training, NIM and Dynamo inference, RAG blueprints, Jetson, Omniverse and robotics simulation. The install adds only nvidia-skill-finder, which recommends other skills and installs them once you confirm.

Fast Rust toolkit for tabular data with nearly 80 subcommands for querying, stats, cleaning, validation, joins and format conversion on CSV and Excel. Also offers an MCP server and a Claude Cowork plugin.

Browserbase's official skills: drive a local or cloud browser with the browse CLI for web scraping and search, turning site traffic into an OpenAPI spec, adversarial UI testing and competitor research. Cloud features need a Browserbase account.

Skills for solving CTF challenges across web, pwn, crypto, reverse engineering, forensics, OSINT and malware analysis, plus a script that installs common CTF tools in one go. Follows the Agent Skills spec and installs with npx skills.

AWS's generally available agent toolkit and plugin marketplace: plugins such as aws-core, aws-agents and aws-data-analytics bundle the AWS MCP Server with evaluated skills for IaC, serverless, containers and billing. Calling AWS APIs requires configured credentials.

PostgreSQL MCP server with database health checks, index tuning, EXPLAIN plan analysis and hypothetical index simulation, plus safe read-only SQL execution in restricted mode.

About 40 research skills from Google DeepMind: search arXiv, PubMed and OpenAlex, query UniProt, PDB, ClinVar, ChEMBL and more, run AlphaGenome variant analysis and render structures in PyMOL. Requires uv; AlphaGenome needs an API key, and keys raise limits for OpenAlex, ClinVar and others.

Teaches agents to build, debug and review stateful AI agents with the Cloudflare Agents SDK: state sync, scheduled tasks, RPC, MCP servers, email and streaming chat, checking the latest official docs first. Maintained by Cloudflare.

Framework for writing data transformation models in SQL or Python, with a Terraform-like plan/apply flow, virtual data environments, unit tests and table diffs, and transpilation across 10+ SQL dialects. A Linux Foundation project and an alternative to dbt.

Testing practices for Vue apps: Vitest and Vue Test Utils, black-box component tests, flushPromises for async code, helpers for testing composables, Pinia stores, async components and Teleport, avoiding snapshot-only tests, and Playwright for end-to-end testing.

Lets agents write and run Playwright scripts on the fly for browser automation: page tests, UX checks and multi-step flows, opening a visible browser by default and auto-detecting local dev servers. After installing the plugin, run npm run setup in the skill directory.

Lets agents write and run Playwright scripts on the fly for browser testing and automation, auto-detecting local dev servers, with screenshots, responsive checks, login flows and link checking. After installing, run npm run setup in the skill directory.

Search and download arXiv papers and read the authors' LaTeX source section by section, export BibTeX and follow topic updates, with papers cached locally. No API key needed.

Microsoft's official skill collection: 170+ skills focused on Azure SDKs (Python, .NET, TypeScript, Java, Rust) and Microsoft Foundry development, plus plugins, custom agents and MCP configs. Microsoft recommends picking skills per project rather than installing them all.

869 medical skills compiled by FreedomIntelligence from a dozen open-source libraries: SOAP notes, discharge summaries, drug interactions, clinical guidelines, PubMed/FDA lookups, genomics and device regulation. Made for OpenClaw, usable elsewhere; some need API keys. Doctors must review output.

Unified search across 20+ academic sources including arXiv, PubMed, bioRxiv, Semantic Scholar and OpenAlex, returning deduplicated, normalized results and downloading full text via open-access channels first. Most sources need no API key.

Measurement-first audits and optimization of web quality using Lighthouse, Chrome DevTools performance traces and CrUX data, covering Core Web Vitals, WCAG 2.2 accessibility, SEO and best practices, for any frontend framework. By Addy Osmani (not an official Google project).

Postgres rules ranked by impact: query optimization, indexing, connection pooling, RLS security, schema design and lock troubleshooting, with wrong-vs-right SQL examples, applicable to any Postgres. Maintained by Supabase.

Replaces arXiv preprint entries in your .bib file with the official published versions from DBLP and ACL Anthology, keeping citation keys, to tidy references before camera-ready. Overwrites the file by default, so preview with --dry-run. Mainly covers CS venues; needs Python 3.10+.

A JADX decompiler plugin plus companion MCP server that lets agents read an APK's classes, methods, Smali and resources to assist Android reverse engineering and vulnerability hunting. Requires JADX-GUI and uv.