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GET /v1/fees

Recommended transaction fees (sat/vB)

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/mempool-api

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

Get an API key

Code snippets

curl "https://api.oanor.com/mempool-api/v1/fees" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/mempool-api/v1/fees", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/mempool-api/v1/fees");
curl_setopt($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/mempool-api/v1/fees",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "hour": 1,
        "unit": "sat/vB",
        "economy": 1,
        "fastest": 1,
        "minimum": 1,
        "half_hour": 1
    },
    "meta": {
        "timestamp": "2026-06-08T01:19:55.731Z",
        "request_id": "311941c0-bd73-4921-9242-b65092be9351"
    },
    "status": "ok",
    "message": "Fees retrieved successfully",
    "success": true
}