Crypto Prices

{
  "prices": [
    {
      "change_24h_pct": 1.2,
      "confidence": "high",
      "depth_usd": 70270700,
      "input": "ETH",
      "price_usd": 2489.31,
      "source": {
        "dex": "uniswap-v3",
        "fee_bps": 5,
        "pool": "0x88e6...5640",
        "quote": "USDC"
      }
    }
  ],
  "yields": {
    "markets": [
      {
        "borrow_apy_pct": 5.1,
        "supplied_usd": 182344400,
        "supply_apy_pct": 4.13,
        "symbol": "USDC"
      }
    ],
    "protocol": "aave-v3"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.ishob.com/v1/crypto/prices?tokens=ETH%2CSOL%2Cbase%3A0x532f27101965dd16442e59d40670faf5ebb142e4&yields_chain=base'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.ishob.com/v1/crypto/prices?tokens=ETH%2CSOL%2Cbase%3A0x532f27101965dd16442e59d40670faf5ebb142e4&yields_chain=base' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

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

// Pays at most $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.ishob.com%2Fv1%2Fcrypto%2Fprices
const res = await pay("https://api.ishob.com/v1/crypto/prices?tokens=ETH%2CSOL%2Cbase%3A0x532f27101965dd16442e59d40670faf5ebb142e4&yields_chain=base");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.ishob.com/v1/crypto/prices?tokens=ETH%2CSOL%2Cbase%3A0x532f27101965dd16442e59d40670faf5ebb142e4&yields_chain=base")
    print(res.status_code, res.text)