Tools · data

x402 market leaderboard (who earns, from how many payers)

The x402 market by seller over the last 30 days: estimated revenue, paid calls, paying wallets, calls per payer, median price, networks and each seller's top resource - from Coinbase's public x402 discovery index, read hourly. Rank by revenue, calls or payers; filter by keyword and network; a payer floor (default 3) drops lone testers. Send {} for the top 20 by revenue. Pay-per-call via x402.

$0.009 per call, paid in USDC on Base or Solana with x402 — no account, no API key. POST https://fiatdock.com/v1/x402/top (or GET with the same fields as query parameters) · MCP tool x402_top_services. An answer the tool cannot produce is refused with 4xx/5xx and is not charged.

Inputs

Field	Type	Description	Example
`sort`	one of revenue, calls, payers	Rank by estimated 30-day revenue (default), 30-day calls, or paying wallets	`"revenue"`
`q`	string	Only sellers with a resource matching these words (e.g. "search", "token safety")	`"search"`
`network`	string	Only resources on this network ("base", "solana" or a CAIP-2 id like eip155:8453)	`"base"`
`minPayers`	integer	Only sellers with at least this many paying wallets on one resource (default 3 — fewer is usually a single tester)	`3`
`limit`	integer	How many sellers, 1-50, default 20	`20`

Example

Request body

{"sort":"revenue","limit":10}

Answer (the published example)

{"sort":"revenue","q":null,"network":null,"minPayers":3,"services":[{"host":"ax1.vc","resources":1,"calls30d":343719,"payers30dMax":4740,"callsPerPayer":72.5,"estRevenue30dUsd":6874.38,"unpricedResources":0,"medianPriceUsd":0.02,"networks":["eip155:8453"],"lastCalledAt":"2026-10-05T00:00:00.000Z","topResource":{"url":"https://ax1.vc/api/dashboard/q-verdict/resource","name":"AX1 Console","description":"Send a Base token contract address, get an AI-written verdict","priceUsd":0.02,"calls30d":343719,"payers30d":4740}}],"count":1,"totals":{"hosts":1017,"resources":12756,"calls30d":737843,"estRevenue30dUsd":45228.14},"indexedAt":"2026-10-05T00:00:00.000Z","stale":false,"source":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","note":"estRevenue30dUsd = calls × listed price, an estimate."}

Call it

curl

# 1) ask: an unpaid call answers 402 with the exact price (free)
curl -i -X POST https://fiatdock.com/v1/x402/top -H 'content-type: application/json' -d '{"sort":"revenue","limit":10}'
# 2) pay: any x402 client signs that 402 and resends — see Node or Python below

Node

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const pay = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:*", client: new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_PRIVATE_KEY)) }],
});
const r = await pay("https://fiatdock.com/v1/x402/top", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"sort":"revenue","limit":10}),
});
console.log(r.status, await r.json());

Python

# pip install "x402[httpx,evm]"
import asyncio, json, os
from eth_account import Account
from x402 import x402Client
from x402.http.clients import x402HttpxClient
from x402.mechanisms.evm.exact import register_exact_evm_client

async def main():
    client = register_exact_evm_client(x402Client(), Account.from_key(os.environ["AGENT_PRIVATE_KEY"]))
    async with x402HttpxClient(client) as http:
        r = await http.post("https://fiatdock.com/v1/x402/top", json=json.loads("{\"sort\":\"revenue\",\"limit\":10}"))
        print(r.status_code, r.json())

asyncio.run(main())

MCP (Claude, Cursor, any MCP client)

{"mcpServers":{"fiatdock":{"command":"npx","args":["-y","fiatdock-mcp"],"env":{"AGENT_PRIVATE_KEY":"0x<your agent wallet key>"}}}}
// then call the tool "x402_top_services" — the package pays each call from that wallet

The wallet needs USDC on Base. Prefer no install? The remote server https://fiatdock.com/mcp answers the 402 as tool output for an agent that signs its own payments.

Related tools

Machine-readable: OpenAPI · tools.json · llms.txt · /.well-known/x402