Research and Reference MCP Servers
661 servers . page 1 of 14
This page lists 661 MCP servers in the Research and Reference category, from 343 publishers. 453 publish a hosted endpoint you can connect to without installing anything, and 156 come from a publisher whose domain has been verified. Sorted by most recent registry activity, 50 to a page.
Servers that read a canonical body of public knowledge: encyclopedias and knowledge graphs, web and book archives, academic literature, and open government or scientific data. Most need no API key, which makes them the cheapest useful thing to connect an agent to, and they answer the question a model cannot answer on its own: what is actually true, and where is the citation.
Top Research and Reference servers
The same selection shown on the home page. Positions lead with servers we think are worth seeing first, then continue by catalogue score, which rewards a published repository, a tool manifest, a verified publisher and recent activity. Ties break in favour of the more recently updated server.
#19 GEO platform: track brand visibility, citations, sources and measurement verdicts across AI answers.Prominara
prominara
#42 Human-in-the-loop for AI agents over MCP elicitation: confirm/form dialogs plus a capability doctor.Elicitly
elicitly
#138 NOAA tides and currents: water levels, tide predictions, currents, met data, flooding, sun and moon.NOAA Tides and Currents
RyanCardin15
#160 Search Google straight from your AI agent. Web results, images, videos, news, products, scholarly ar.Buscador Google
mcp-dir
Tick the box on any row to line servers up side by side. Pick two or three, then open the comparison. Servers must share a category for the comparison to mean anything.
NASA Mission & Space News, buy per-query in-session (nasanewswatch)
NASA mission & space news: launches, science, discoveries. Hourly, $0.01/query.Scholar Feed
Rank CS/AI/ML papers by citations, forecast impact, or code adoption; trace 23.2M citation edges.Spatial India
District-level open data for India, Census, NFHS-5, NCRB, RBI and more, joined onto one geography.Signs of AI Writing
AI-writing detection (EN/ES) that shows the evidence: named tells, hidden characters, citations.BrowseAI Dev
Evidence-backed web research for AI agents with citations and confidence scores.slashyear, sourced history
Sourced history: 85,753 dated events, each quoted from a citable Wikipedia revision id.Elicitly
Human-in-the-loop for AI agents over MCP elicitation: confirm/form dialogs plus a capability doctor.Finology Verified Engine
Keyed federal student-loan answers, each logged and citation-stamped. Keyless tier: student-loan.Hk Companies
Hong Kong Companies Registry open data, company/BR-number search, new registrations & name changes.OpenStreetMap
Geocoding, walking/driving/cycling distances, route optimization, isochrones and POI search on OSM.Limy
AI search visibility: brand mentions, citations, rankings, competitors and top cited sources.NASA Image of the Day, space & astronomy photos (nasaiotd)
NASA Image of the Day: official space & astronomy photos with captions, most days.Datos: Spanish Open Data
BOE, Spanish public tenders and INE statistics behind one MCP server.Noether Physics
Physics assistant: checked equations, live simulations, claims verified against arXiv papers.PubMed Biomedical Papers, new research articles ($0.01/query)
New PubMed papers hourly: newest biomedical research + clinical trials. ($0.01/q).Thai Legal
Thai legal search MCP, statutes, gazette, opinions, court cases, with checkable citations.Ckan
MCP server for interacting with CKAN open data portals.Marine buoy weather observations (marinewatch)
Live NOAA NDBC marine buoy observations: wind, waves, pressure, water temp. Hourly refresh.Pithflow
Read-only access to your own Pithflow meeting notes, transcripts, dictionary and usage.RiverWatch: USGS river levels & stream-flow gauges, per query
Live river levels and stream-flow readings from USGS gauges, updated every 15 minutes.Localization Resource Integrity
Checks the structural integrity of translated resource dictionaries against a source dictionary y.mythosdata
Not for Pantheons outside those four, myth in modern fiction, or the scholarly literature about myth, the sources here are the ancient texts plus a bounded share of Wikipedia, not modern monographs.Neon Academic & Market Research MCP: Deep Scientific Literature Intelligence
Autonomous academic and competitive intelligence search engine for AI agents. Queries peer-reviewed literature across PubMed, arXiv, and CrossRef with DOI citation mapping, patent search...Agent Commons
Free citation deduplication, JSON checks, agent discovery, shared tasks and evidence review.Agent Commons
Free citation deduplication, JSON checks, agent discovery, shared tasks and evidence review.Wikipedia Retrieval MCP
Search.Sacred Texts MCP
Citation-oriented retrieval across six religious traditions.Peer Research Papers MCP
Scholarly literature search across nine sources.Musicbrainz
MusicBrainz MCP, search/browse music metadata, cover art, and submit tags/ratings/collections.Smartipedia
Read, search and edit Smartipedia, an open AI-native encyclopedia. No API key, no signup.UK Legal Research
UK legal research, case law, legislation, Hansard, bills, votes, committees, HMRC, citations.Semantic Scholar MCP Server
MCP server for the Semantic Scholar API: search 200M+ papers, citations, authors, recommendations.Gagelink
River level, streamflow, floods and basins from USGS, NOAA, Hub'Eau, UK Environment Agency, SWOT.Scholar Sidekick
Catch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.NOAA CO-OPS MCP Server
NOAA CO-OPS tides, water levels, currents, and meteorological data.Openzim
Offline MCP access to ZIM knowledge archives, Wikipedia, Wiktionary, Stack Exchange, Kiwix.Litra Paper Search
MCP server for Litra.ai - AI-powered academic paper search with relevance scoring and summarization.Verify API
Evidence-backed verification for citations, packages, repos, cases, filings, drugs, x402 sellers.Life-Science Preprint Tracker, buy per-query in-session (biopreprintwatch)
New bioRxiv + medRxiv life-science preprints: title, authors, category, abstract. Hourly.UniProt MCP
Verifiable, release-aware protein evidence workflows over UniProt and linked scientific sources.Paris Compass
Paris commercial premises from open data: shopfront history, street turnover, sourced figures.haiku.rag
Local-first agentic RAG with citations - hybrid search, reranking, multimodal document retrieval.New Research Papers & Science Breakthroughs, buy per-query in-session (scibreak)
Daily new research papers across AI, physics and biology from arXiv.Openalex
Access the OpenAlex academic research catalog, 270M+ publications.Openstreetmap
Geocode, reverse geocode, and run Overpass spatial queries on OpenStreetMap data.Prominara
GEO platform: track brand visibility, citations, sources and measurement verdicts across AI answers.Pubmed
Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.Diamond
Sourced diamond and gemology tools for AI assistants, with 90 encyclopedia entries.Economy Intel MCP
Macro data for AI agents: GDP, inflation, unemployment and more (World Bank, US BLS). No keys.StatCite, Verified Economic Statistics
Cited economic statistics: World Bank, IMF, BIS, ECB, Caribbean central banks. Verify any figure.
Frequently asked questions
- What are research and reference MCP servers?
- Encyclopedias, archives, academic papers and public datasets They are Model Context Protocol servers, which means an AI client can call their tools directly once connected.
- How many research and reference MCP servers are there?
- This catalogue lists 660 servers in the Research and Reference category, out of 660 in total.
- Which research and reference servers work without installing anything?
- 452 of the 660 servers in this category publish a hosted endpoint, so a client can connect over the network instead of running a local process.
- Do research and reference MCP servers need API keys?
- Most do. 123 of 660 in this category declare at least one required environment variable, which is roughly 19 percent.
- Are these servers official?
- 156 of 660 are published under a company domain namespace, which confirms the publisher controls that domain. The rest are community published. Neither status means the server has been reviewed for quality or security.
- How do I add one of these servers to my client?
- Open the server page for the details. Servers with a package are added by putting the install command in your client configuration file. Servers with a hosted endpoint are added by giving the client the endpoint URL.
- How is this category assigned?
- The MCP Registry does not publish categories, so this catalogue assigns them by matching known product names and topic keywords in each server entry. A server can appear in one category only, chosen by the strongest match.
- Where does this data come from?
- Server names, descriptions, versions, packages and endpoints come from the official MCP Registry. Repository details come from public source hosts. Nothing here is supplied by the vendors directly.