ToolVet
79trust / 100

Btc Fees

by eu-verify in Onchain & crypto

x402 APIPassing, checked 4 h ago

Recommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remaining blocks/time). No required params; served with a 60s cache.

GET https://data.greeneris.io/v1/btc/fees

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
332 ms typical, 499 ms slowest 5%
Last check
4 h ago
Next check
any minute now

How to call it

GET https://data.greeneris.io/v1/btc/fees

Each call costs $0.001 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://data.greeneris.io/v1/btc/fees?include=difficulty

Parameters

ParameterTypeRequiredDescription
includestringNoAdd difficulty retarget estimate (optional) One of: difficulty.

Example response

The provider's example. We can't check it without paying.

{
  "difficulty_adjustment": {
    "difficulty_change_percent": -2.74,
    "estimated_retarget_date_ms": 1753728000000,
    "progress_percent": 11.06,
    "remaining_blocks": 1793,
    "remaining_time_ms": 1093000000
  },
  "fees_sat_per_vb": {
    "economy": 1,
    "fastest": 2,
    "half_hour": 1,
    "hour": 1,
    "minimum": 1
  },
  "source": "mempool.space (live mempool snapshot)"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://data.greeneris.io/v1/btc/fees?include=difficulty'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://data.greeneris.io/v1/btc/fees?include=difficulty' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fdata.greeneris.io%2Fv1%2Fbtc%2Ffees
const res = await pay("https://data.greeneris.io/v1/btc/fees?include=difficulty");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://data.greeneris.io/v1/btc/fees?include=difficulty")
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402334 ms$0.001
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