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GET /v1/meta

Usage notes

Try it live

10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/reactome-api

It works. Grab an API key and use it in your project.

Get an API key

Code snippets

curl "https://api.oanor.com/reactome-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/reactome-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/reactome-api/v1/meta");
curl_setopt($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/reactome-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": "The Reactome pathway knowledgebase. /v1/search?query=glycolysis (filter species=Homo sapiens, types=Pathway|Reaction) = search pathways, reactions & molecules; /v1/entity?id=R-HSA-70171 = any entity by Reactome stable id (pathway/reaction/complex/protein: name, type, species, compartments, summary, disease flag); /v1/pathway?id=R-HSA-70171 = the events (sub-pathways & reactions) contained in a pathway; /v1/participants?id=R-HSA-70171 = the molecules participating in a pathway/reaction with their reference identifiers; /v1/toppathways?species=9606 = the top-level pathways for a species (taxon id or name); /v1/mapping?id=P04637 = the pathways a UniProt protein takes part in (cross-links the UniProt API); /v1/species = the model organisms. Stable ids look like R-HSA-70171 (HSA = Homo sapiens). Data courtesy of Reactome.",
        "source": "Reactome ContentService (reactome.org)",
        "endpoints": [
            "/v1/search",
            "/v1/entity",
            "/v1/pathway",
            "/v1/participants",
            "/v1/toppathways",
            "/v1/mapping",
            "/v1/species",
            "/v1/meta"
        ]
    },
    "meta": {
        "timestamp": "2026-06-01T08:14:08.100Z",
        "request_id": "3f34679f-3613-49eb-9ee9-59a2fe4e8f1a"
    },
    "status": "ok",
    "message": "Meta retrieved",
    "success": true
}