Coin search

Resolve a name or ticker to coin ids: full-text search returning matching coins (id, symbol, name, market cap rank, ordered by rank), exchanges (id, name, market type) and categories (id, name), plus NFT collections. `limit` per group 1-50 (default 10). The id resolver for every other coin tool: an agent holding "PEPE" or "render" gets the canonical id here before calling coin-profile, coin-ohlc or coin-history. Cached in-process for 5 minutes.

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Input

Example output

{
  "source": "coingecko",
  "fetchedAt": "2026-08-22T13:20:00.000Z",
  "cached": false,
  "query": "usdc",
  "counts": {
    "coins": 5,
    "exchanges": 0,
    "categories": 1,
    "nfts": 0
  },
  "coins": [
    {
      "id": "usd-coin",
      "symbol": "USDC",
      "name": "USDC",
      "rank": 6
    }
  ],
  "exchanges": [],
  "categories": [
    {
      "id": "usdc-stablecoins",
      "name": "USDC Stablecoins"
    }
  ],
  "nfts": []
}

Try it - see the 402 challenge (free)

curl -i "https://agent402.tools/api/coin-search?query=usdc&limit=5"

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

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();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/coin-search?query=usdc&limit=5");

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