Research MCP Servers for HTTP / API

Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.

Budgeted research with cited evidence and visible payment state on the selected Arc network.

Catch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.

Search ClinicalTrials.gov — find studies, retrieve results, match patients to eligible trials.

DATASUS SIH/SUS hospital admissions in Brazil (AIH, 1992-2025): ICD-10 causes, ICSAP, rates.

Canli Capital's open research record: papers, killed candidates, trial counts, live record.

Protein research over UniProtKB — search by function, fetch curated records, map IDs, proteomes.

Search Wikipedia, arXiv, SEC EDGAR, US Census, USDA, PyPI and more through one Dataville API.

Search USGS and EMSC seismic data — real-time feeds, event queries, and earthquake counts.

Researcher profiles, works, affiliations, funding, and peer reviews from the ORCID registry.

Search EU legislation, CJEU case law, and treaties; traverse CELLAR graph; browse EuroVoc concepts.

Access the OpenAlex academic research catalog — 270M+ publications.

Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.

Search arXiv, fetch paper metadata, and read full-text content.

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

Link compounds to protein targets, rank bioactivity, and look up drug mechanisms and indications.

Search PubChem compounds, properties, safety data, bioactivity, and cross-references.

Access U.S. congressional data - bills, votes, members, committees - via MCP.

Agent-first data marketplace — AI agents search, purchase, and sell datasets via MCP.

Query 29,500+ World Bank development indicators for 200+ countries across 60+ years.

Look up genes, sequences, variants, homologs, and cross-database xrefs from Ensembl REST.