Usage notes

Code snippets

curl "https://api.oanor.com/mesh-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/mesh-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/mesh-api/v1/meta");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/mesh-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "MeSH (Medical Subject Headings) is the U.S. National Library of Medicine's authoritative controlled vocabulary used to index biomedical literature in PubMed — covering diseases, anatomy, chemicals & drugs, organisms, psychology, techniques and more. /v1/search?q=diabetes = search MeSH descriptors by preferred name (match=contains|exact|startswith), returning each descriptor's stable id (e.g. D003920) and label; /v1/term?q=heart attack = resolve a lay term or synonym to the MeSH descriptor(s) it maps to (so 'heart attack' → Myocardial Infarction); /v1/descriptor?id=D003920 = a descriptor's full record — its preferred name, all entry terms (synonyms), the allowable qualifiers/subheadings (e.g. drug therapy, diagnosis, epidemiology) and see-also references, plus a link to the MeSH browser. Ideal for biomedical NLP and text mining, literature tagging and search, clinical and research tooling, and ontology mapping. Data from NLM MeSH (public domain). For drug-specific nomenclature see the RxNorm API.",
        "source": "MeSH — Medical Subject Headings, U.S. National Library of Medicine (id.nlm.nih.gov/mesh)",
        "endpoints": [
            "/v1/search",
            "/v1/term",
            "/v1/descriptor",
            "/v1/meta"
        ]
    },
    "meta": {
        "timestamp": "2026-06-01T16:23:44.727Z",
        "request_id": "271a84c1-19e3-4685-8498-49f3a281dd66"
    },
    "status": "ok",
    "message": "Meta retrieved",
    "success": true
}