Tokenized asset

One tokenized real-world asset by id (gold, nvidia, tesla, spy ...): identity, type, image and web slug joined with its onchain market row - price, market cap, 24h volume and change in your currency. Send GET /api/rwa-asset with the required field id and pay $0.006 per call over x402 or MPP (there is no free tier). It returns a JSON object with source, fetchedAt, cached, id, symbol and 6 more.

Two cached upstream reads, one answer. Use rwa-list to find the id.

Category: Crypto & onchain data · Tags: crypto rwa tokenized stock commodity market-data profile

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Parameters

Example request

curl -i "https://agent402.tools/api/rwa-asset?id=gold&currency=usd"

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

Example response

{
  "source": "coingecko",
  "fetchedAt": "2026-09-02T18:50:00.000Z",
  "cached": false,
  "id": "gold",
  "symbol": "XAU",
  "name": "Gold",
  "type": "commodity",
  "image": "https://coin-images.coingecko.com/coins/images/10481/large/logo.png",
  "webSlug": "gold",
  "lastUpdated": "2026-09-02T18:49:00Z",
  "market": {
    "id": "gold",
    "symbol": "XAU",
    "name": "Gold",
    "type": "commodity",
    "image": "https://coin-images.coingecko.com/coins/images/10481/large/logo.png",
    "currency": "usd",
    "price": 4376.6,
    "marketCap": 5219552133,
    "volume24h": 557496353,
    "high24h": 4394.94,
    "low24h": 4289.36,
    "change24h": 42.77,
    "change24hPct": 0.98698,
    "marketCapChange24h": 44135859,
    "marketCapChange24hPct": 0.8528,
    "lastUpdated": "2026-09-02T18:49:00Z"
  }
}

From an MCP client

catalog.call {
  "slug": "rwa-asset",
  "params": {
    "id": "gold",
    "currency": "usd"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for rwa-asset; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• id is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• 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.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A POST with a JSON body to /api/rwa-asset 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/rwa-asset?id=gold&currency=usd");

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