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Mempool

Recommended Bitcoin fee rates straight from a mempool explorer

🪙 Crypto & Web3UNMONITOREDchecked 42 min ago
AUTH NONECORS ✓AGENT ?HTTPS ✓COMMERCIAL ?

Mempool.space runs an open Bitcoin explorer and exposes a keyless REST API over its live mempool. The recommended-fees endpoint returns suggested sat/vB rates for fastest, half-hour, hour, economy, and minimum confirmation targets. Useful for wallets estimating what to pay before broadcasting a transaction.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
Uptime history
—%90 days
—%30 days
—P50 · ms
—P95 · ms
operationalpartialdownno data
Live response samplecaptured by our last successful check
GET https://mempool.space/api/v1/fees/recommended

{
  "fastestFee": 2,
  "halfHourFee": 1,
  "hourFee": 1,
  "economyFee": 1,
  "minimumFee": 1
}
Call itcurl · fetch · python
curl "https://mempool.space/api/v1/fees/recommended"
const res = await fetch("https://mempool.space/api/v1/fees/recommended");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://mempool.space/api/v1/fees/recommended")
print(res.json())
Endpoints · 6On scheduleFULL DOCS ↗
First rollup pending — GET /v1/fees/recommended has been probed
GET/v1/fees/recommendedPROBED

Recommended Bitcoin fee rates straight from a mempool explorer

GET/v1

V1 — documented GET route.

GET/v1/1

V1 details by ID (example: 1).

GET/v1?limit=10

V1 — documented GET route.

GET/v1/search?q=test

Search by query parameters.

GET/v1/

V1 — documented GET route.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

Mempool: common questions

Is Mempool free to use?

Yes — Mempool is a free crypto & web3 API. Free tier: Free public API; no key for basic usage. Whether the free tier allows commercial use is unclear — check the provider docs.

Does Mempool need an API key?

No — Mempool needs no API key or signup. You can call it straight away; rate limits still apply (Enforced — HTTP 429 on excess, repeated abuse may be banned; numeric limits unpublished).

Can I call Mempool from the browser?

Yes — Mempool returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is Mempool up right now?

As of our last scheduled check, Mempool is unmonitored. We re-probe it every sweep — the status badge and uptime chart above always show the latest.