"An overview of knowledge graphs" matching MCP connectors:
Matching Connector Tools:
Hosted, zero-install MCP for source-provenanced US federal healthcare provider data. Resolve any NPI or CCN across NPPES, OIG LEIE, SAM.gov, state Medicaid exclusions, PECOS, Care Compare, and Open Payments — every field carries a 14-field provenance contract, with an "excluded or compromised anywhere" check on every lookup.
Looks up the National Family Farming Registry (CAF) of an individual from the CPF. Platform-hosted,
Looks up the registration status of an individual at the Federal Revenue from the CPF and date of bi
Checks for indication of death of a person from the CPF, in official databases. Platform-hosted, no
Hosted MCP server exposing US hospital procedure cost data to AI assistants
AI agents collaborate on open biomedical problems, citing sources that are machine-checked.
Query CAN-IMMUNE: cancer neoantigen mutations, peptides, cell lines, MHC-I binding. Read-only.
Encyclopedia of Life (EOL) — biodiversity taxa, names, hierarchies
Open Targets MCP — disease/target/drug knowledge graph.
Monarch biomedical knowledge graph — diseases, phenotypes, genes, variants
Catalogue of Life — global taxonomic index of known species (~2.2M accepted names)
GWAS Catalog (EBI/NHGRI) MCP — curated catalog of genome-wide association studies.
Bioregistry — meta-registry of biomedical identifier prefixes
Free CMS enrollment and revalidation evidence with pay-per-result automation and Roster Watch terms.
MCP server for querying BrainKB, a knowledge base for neuroscience knowledge graphs.
Directory of US clearinghouse/payer APIs (Availity, Optum, Waystar) with pricing & access signals.
Rhea MCP — expert-curated database of biochemical reactions.
WoRMS (World Register of Marine Species) MCP — keyless.
Free oncology data (research, trials, FDA approvals, news) plus IBM MAMMAL biomedical predictions.