Library
The Upskill library is a free index of agent skills, MCP servers, repos and prompts: 3,312 listed, 296 passed our security scan at a pinned commit (what the scan finds).
Recommended packs
All packsSuperpowers (obra)
Skills framework/methodology: verification-before-completion, writing-plans, executing-plans, systematic-debugging, TDD, subagent-driven development.
Matt Pocock Skills (handoff, research, grill-me)
Popular engineering skills incl. handoff (write a resumable handoff doc), research, grill-me (interrogate a plan), tdd, code-review.
Anthropic Skills (skill-creator, webapp-testing)
Anthropic's public skills repo incl. skill-creator (turn a workflow/correction into a skill) and webapp-testing (Playwright).
Mem0
Memory layer for agents (OSS SDK, CLI, MCP; optional cloud): store and retrieve user/owner facts and preferences.
Humanizer (anti-AI-slop)
Skill that rewrites text to remove common signs of AI-generated writing.
Marketing Skills (Corey Haines)
~50 SKILL.md files: cold-email, prospecting, revops, emails, lead-magnets, launch, directory-submissions, pricing, analytics-tracking, CRO, copywriting, SEO.
Obsidian skills
Agent skills for Obsidian (by its CEO): use the Obsidian CLI and open formats (Markdown, Bases, JSON Canvas).
CCXT
A unified trading API for 100+ crypto exchanges and prediction markets in JavaScript, Python, PHP, C# and Go.
agent-browser (Vercel Labs)
Browser-automation CLI for agents plus its skill (snapshot/click/fill), local or cloud browsers.
Playwright MCP (Microsoft)
Official Playwright MCP server: drive a real browser via accessibility snapshots.
Langfuse
Open-source LLM/agent tracing, evals, prompt management; self-host or cloud.
Vercel Agent Skills (official)
Official Vercel skills incl. deploy-to-vercel, vercel-cli-with-tokens, React/Next best practices.
Composio
Toolkits for 1000+ apps with managed OAuth/auth, tool search and a sandbox; usable via SDK or MCP.
Task Master (claude-task-master)
AI task-management system (CLI + MCP): parse a PRD into tasks with dependencies, track status, pick next task.
Beads (issue memory for agents)
Git-backed issue tracker CLI (`bd`) designed as long-term task memory for coding agents.
promptfoo
CLI to test prompts, agents and RAG with assertions; red-teaming and vulnerability scanning for LLM apps.
Nango
Open-source platform for OAuth + API integrations ('connect your agents & product to 1,000 APIs'): auth, token refresh, syncs, MCP.
Apify MCP Server (official)
Hosted (mcp.apify.com) or local MCP server exposing Apify Actors: scrapers for Google Maps, LinkedIn, X, Instagram, websites, e-commerce.
vectorbt
A fast vectorized backtesting engine for testing many trading strategy variants on historical data.
backtesting.py
A small Python framework to backtest trading strategies, with stats and interactive plots.
Firecrawl MCP Server (official)
MCP for scraping, crawling, search and structured extraction (hosted v2 endpoint or local).
Official MCP Registry + mcp-publisher
The official MCP Registry service and its `mcp-publisher` CLI for publishing a server.json under a verified namespace.
Remotion agent skills (official)
Remotion's official agent skills for making videos programmatically with React.
Exa MCP Server (official)
Hosted MCP (mcp.exa.ai) for neural web search, crawling and company research.
Notion MCP server (official)
Notion's official MCP server to search, read and edit Notion pages and databases.
prediction-market-analysis
A framework for collecting and analyzing prediction-market data; its README lists research papers that used it.
Browserbase Skills (official)
18 skills for web access through Browserbase cloud browsers (browse, extract, event-prospecting).
AI Marketing Skills (Eric Siu / Single Grain)
~35 agency workflows as skills: outbound-engine, lead-dossier, sales-pipeline, revenue-intelligence, growth-engine, SEO ops, content ops.
Google Analytics MCP (official)
Official GA4 MCP server: run reports and realtime queries against GA4 properties.
Google Workspace MCP
An MCP server for Gmail, Google Calendar, Docs, Sheets, Slides, Chat, Forms, Tasks and Drive.