x402 market pulse

Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Send GET /api/x402-market-pulse with no required fields (2 optional) and pay $0.001 per call over x402 or MPP, or call it free by solving a proof-of-work challenge. It returns a JSON object with asOf, window, sortedBy, ecosystem, topProviders and 1 more.

Pick the lens with sort: 'usd' (revenue, default - whale-skewable), 'buyers' (distinct paying wallets - broadest adoption/reach), or 'calls' (raw volume). Every row carries all metrics plus callsPerBuyer (intensity), so revenue and actual ecosystem usage are both visible. topToolCategories: the tool-category supply mix the whole market offers (from every indexed seller's manifest). Per-tool purchase counts are not on-chain, so demand is provider-level - the honest whole-market read. ?top=10&sort=buyers

Category: Payments & x402 · Tags: x402 market sentiment leaderboard ecosystem providers intelligence discovery

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Parameters

Example request

curl -i "https://agent402.tools/api/x402-market-pulse?top=10&sort=usd"

Without payment this returns HTTP 402 Payment Required with the exact price for x402-market-pulse; any x402 v2 or MPP client pays it and retries.

Example response

{
  "asOf": "2026-07-12T00:00:00.000Z",
  "window": "last 24h",
  "sortedBy": "usd",
  "ecosystem": {
    "sellersIndexed": 1479,
    "toolsIndexed": 33779,
    "toolsCapPerSeller": 50
  },
  "topProviders": [
    {
      "rank": 1,
      "provider": "seller.example",
      "usdSettled": 120.5,
      "calls": 10000,
      "buyers": 250,
      "callsPerBuyer": 40,
      "homepage": "https://seller.example"
    }
  ],
  "topToolCategories": [
    {
      "category": "crypto",
      "sellersOffering": 446,
      "tools": 3353
    }
  ]
}

From an MCP client

catalog.call {
  "slug": "x402-market-pulse",
  "params": {
    "top": 10,
    "sort": "usd"
  }
}

On the hosted connector at https://agent402.tools/mcp, catalog.call runs x402-market-pulse free (rate-limited, no wallet). Local install: npx -y agent402-mcp.

Errors and behavior

• Every field is optional. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Free tier: no outbound network call leaves the server for this tool, so proof-of-work (16 leading zero bits of sha256) pays for it.
• A POST with a JSON body to /api/x402-market-pulse is served as this GET, with the body as the input.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/x402-market-pulse?top=10&sort=usd");

No wallet? Pay with compute

Fetch a challenge, solve the sha256 puzzle (16 leading zero bits, a fraction of a second of CPU), and resend with the X-Pow-Solution header:

import { createHash } from "node:crypto";
const lz = (b) => { let t = 0; for (const x of b) { if (!x) { t += 8; continue; } t += Math.clz32(x) - 24; break; } return t; };
const c = await (await fetch("https://agent402.tools/api/pow/challenge?slug=x402-market-pulse")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/x402-market-pulse?top=10&sort=usd", { method: "GET", headers: { "X-Pow-Solution": c.token + ":" + n } });

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