X402 · Mev Pulse

Real total/average/median/max ETH paid to proposers, builder diversity, gas utilization over a window of recently delivered MEV-Boost relay payloads (Flashbots by default). Pay 0.02 USDC on Base.

price

0.020 USDC

rail

Base

facilitator

OMNIGATE

method

GET

endpoint https://mcp-x402.onrender.com/x402/mev-pulse

payTo 0x5bbd32e0478e49a7540ef2d760e0b0f9aa6328b2

asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

indexed 2026-10-25T20:10:49.000Z

Live 402 challenge

Hits the real endpoint without paying and shows exactly what it demands. Nothing is charged.

Pay from your agent

import { wrapFetchWithPayment } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.BUYER_PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, { schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(signer) }] });

const res = await pay("https://mcp-x402.onrender.com/x402/mev-pulse", { method: "GET" });
console.log(await res.json(), res.headers.get("PAYMENT-RESPONSE"));

Example input

{
  "limit": 50
}

Example output

{
  "source": "https://relay.ultrasound.money/relay/v1/data/bidtraces/proposer_payload_delivere",
  "window": {
    "payloads_analyzed": 10,
    "malformed_payloads_excluded": 0,
    "latest_slot": "15535223",
    "oldest_slot_in_window": "15535214"
  },
  "value_extracted_eth": {
    "total": 0.044692,
    "average": 0.004469,
    "median": 0.003494,
    "max": 0.009998
  },
  "unique_builders": 7,
  "average_num_tx_per_block": 180.1,
  "average_gas_utilization_pct": 57.06,
  "methodology_note": "\"value\" is the real amount (ETH) the winning block builder paid the proposer to "
}