MCP Server Directory

Zero-auth research MCP: web, academic, finance, news, weather, macro, social, SEC. No keys.

Usage-adaptive Obsidian vault search: Hebbian + PageRank + BM25 hybrid ranking.

O'Reilly Media MCP Server io.github.oreillymedia/oreilly-mcp-server

Search O'Reilly for tech books, courses, events, and more. Requires an O'Reilly subscription.

MCP server for Indian banking: IFSC lookup, UPI VPA validation, bank UPI status.

Zoteus io.github.oscardvs/zoteus

Zotero MCP server for Claude and ChatGPT: search, citations, safe writes, PDF passages and pages.

Search 2.2M tool actions for agents and robots, every result labelled. Find, verify, passports.

xkcd Comic Suggester io.github.papjuli/xkcdai

Suggests a relevant xkcd comic during a conversation, via semantic search over every comic.

MCP server for advanced web search using Tavily API.

Real estate investment intelligence: search, comps, cash flow, off-market leads, skip trace.

Arxiv io.github.pipeworx-io/arxiv

arXiv MCP — preprint server search (free, no auth)

Search 1,000+ battle-tested AI prompts from getprompts.org into Claude Code, Cursor, ChatGPT.

Duffel io.github.pipeworx-io/duffel

Duffel MCP — live flight search + pricing via the Duffel Flights API (duffel.com)

Findymail io.github.pipeworx-io/findymail

Findymail MCP — B2B email finder & reverse-email lookup (findymail.com)

Korean Public Data io.github.SongT-50/korean-public-data-mcp

Korean government open data - weather, population, law search via data.go.kr

Machine Library io.github.SpaceFrontiers/mcp

Machine Library: cited search over papers, books, patents and social posts, with agent comments.

Movies io.github.pipeworx-io/movies

Movies MCP — wraps iTunes Search API (movies, free, no auth) and TVmaze API (TV shows, free, no…

Autonoma Agent Services io.github.powerliftingdeveloper/autonoma

Paid agent trust checks, receipt verification, research, data work, and monitoring.

Search, discover, and install 500+ AI agent skills from the SkillFlow marketplace.

Market Research Trends MCP ai.trendsmcp/market-research

See if a market is heating or cooling. Trend volume and growth signals. Free key at trendsmcp.ai

Secure integration between AI tools and Egnyte content with search, analysis, and workflow tools.

Google Search Console + Bing + GA4 + AdSense — unified SEO intelligence for AI agents.

Search engine and payment rail for AI agents. 2,300+ services, semantic ranking.

Research workspace for Zotero + Obsidian + NotebookLM. Search, ingest, sync, verify briefs.

MCP server for Little Green Light CRM. Search donors, log gifts, manage groups and contacts.