Bazaar Cheapest

{
  "capability": "web search",
  "cheapest": {
    "payers_30d": 12,
    "price_usd": 0.001,
    "resource": "https://example.com/api/search"
  },
  "corpus": {
    "cutoff": {
      "calls_30d": 5,
      "note": "Weakest row in the searchable slice. Resources at or below this 30-day usage may not be indexed; ranking is payers, then calls, then most recently restamped by the index, then resource URL.",
      "payers_30d": 2
    },
    "indexed": 8005,
    "of_total": 35456
  },
  "count": 7,
  "filters": {
    "min_payers": 1,
    "min_payers_effective": 2
  },
  "page": {
    "has_more": false,
    "limit": 20,
    "next_offset": null,
    "offset": 0,
    "returned": 7,
    "total": 7
  },
  "price_floor_complete": false
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://datastand.dev/api/bazaar/cheapest?capability=web+search&limit=20&min_payers=1&offset=0'

# 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://datastand.dev/api/bazaar/cheapest?capability=web+search&limit=20&min_payers=1&offset=0' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fdatastand.dev%2Fapi%2Fbazaar%2Fcheapest
const res = await pay("https://datastand.dev/api/bazaar/cheapest?capability=web+search&limit=20&min_payers=1&offset=0");
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://datastand.dev/api/bazaar/cheapest?capability=web+search&limit=20&min_payers=1&offset=0")
    print(res.status_code, res.text)