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SYNTHORA · Bitcoin Fees

by SYNTHORA

POSTBaseOnchain
$0.005
per call · USDC on Base

SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless. Bitcoin only.

Endpoint
POST https://api.hergertsynthora.com/v1/bitcoin-fees
11calls / 30dmeasured by x402.new
5paying wallets / 30dmeasured by x402.new
11%uptime · 167ms p95measured by x402-list.com
Acompliance grademeasured by x402-list.com

Listed in 3 directories: bazaar, x402-list, x402-new. First seen 5 Sept 2026.

Call this service

The endpoint answers an unpaid request with an HTTP 402 and a payment challenge. @x402/fetch signs it, pays in USDC, and retries — you get the result back in one call.

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, account);

const res = await pay("https://api.hergertsynthora.com/v1/bitcoin-fees", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({ /* see the 402 challenge for the shape */ }),
});

console.log(await res.json());
Open the endpoint ↗On OpenSea's x402 Bazaar ↗Everything from api.hergertsynthora.com

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Uptime and compliance: x402-list.com (CC BY 4.0). Safety scores: x402.direct. Call and payer counts: x402.new. AMNT indexes this endpoint and does not host, operate or vouch for it.

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