Tokenized asset issuer

One issuer of tokenized real-world assets by id: aggregate tokenized market cap, 24h cap change and 24h volume, plus every token it issues with symbol, name and contract address per platform (e.g. Send GET /api/rwa-issuer 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, name and 6 more.

Coinbase's Base-chain tokenized Apple, Nvidia, Meta, Alphabet). Use rwa-issuers for ids. Cached in-process for 5 minutes.

Category: Crypto & onchain data · Tags: crypto rwa tokenized issuer contracts market-data

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Parameters

Example request

curl -i "https://agent402.tools/api/rwa-issuer?id=coinbase-ecosystem"

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

Example response

{
  "source": "coingecko",
  "fetchedAt": "2026-09-02T18:50:00.000Z",
  "cached": false,
  "id": "coinbase-ecosystem",
  "name": "Coinbase",
  "marketCap": 9982908.56,
  "marketCapChange24h": 100918.35,
  "volume24h": 20001148.07,
  "updatedAt": "2026-09-02T17:00:00Z",
  "count": 4,
  "tokens": [
    {
      "id": "nvidia-coinbase-tokenized-stock",
      "symbol": "NVDAC",
      "name": "NVIDIA (Coinbase Tokenized Stock)",
      "platforms": {
        "base": "0xb20000000000000000000078ee7ce2fe4908108c"
      }
    }
  ]
}

From an MCP client

catalog.call {
  "slug": "rwa-issuer",
  "params": {
    "id": "coinbase-ecosystem"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for rwa-issuer; 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-issuer 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-issuer?id=coinbase-ecosystem");

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