"Reversing MD5 hash of a phone number to retrieve the original number" matching MCP connectors:

Uphealth Signal turns federally-sourced (CDC/NIH/MedlinePlus) health facts, lists, and tips into agent-callable cued-stream tools. Every cue is provenance-backed, audience-safety-checked, and sequenced on the patient's last response, so your AI health agent never fabricates health content. Free sandbox (Display mode): no PHI, no BAA. Not medical advice.

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.

Appendix turns any AI health conversation into a board-certified physician's opinion — with a real prescription when clinically appropriate. Search medical literature and submit a clinical encounter for review, all from your agent.

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

Find where to buy peptides from vetted, COA-tested vendors and check if a peptide vendor is legit.

Hosted MCP server exposing US hospital procedure cost data to AI assistants

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

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

Validates ICD-10-CM against the real FY2026 catalog (NCHS/CDC) and CPT by structure/category.

Peptide and GLP-1 dosing math (dose to syringe units) plus search over Shotlee's articles.

Look up US healthcare providers in the NPPES NPI registry and resolve NUCC specialty codes.

GBIF MCP — wraps the Global Biodiversity Information Facility API v1 (free, no auth)

Encyclopedia of Life (EOL) — biodiversity taxa, names, hierarchies

PubMed MCP — wraps the NCBI E-utilities API (biomedical literature, free, no auth)

PomBase MCP — the fission yeast (Schizosaccharomyces pombe) model-organism database.

Catalogue of Life — global taxonomic index of known species (~2.2M accepted names)

Paleobiology Database (PBDB) MCP — the global fossil record. Keyless.

IUPHAR/BPS Guide to PHARMACOLOGY (GtoPdb) MCP — keyless.