Source Product

{
  "humanSummary": "Best match: Example Tile Supply has 8 new-old-stock A8262 almond V-cap pieces.",
  "matches": [
    {
      "available": true,
      "condition": "new old stock",
      "confidence": 0.96,
      "constraintWarnings": [],
      "evidence": [
        "Model/profile matches A8262",
        "Seller identifies almond color",
        "Quantity meets requested minimum"
      ],
      "exactness": 1,
      "fit": "strong",
      "priceUsd": 14.5,
      "quantity": 8,
      "rank": 1,
      "seller": "Example Tile Supply",
      "shippingUsd": 18,
      "source": "example-seller",
      "title": "American Olean A8262 V-cap, almond",
      "url": "https://example.com/a8262",
      "verificationEvidence": [
        "Requested part number verified on source page.",
        "Requested manufacturer verified on source page."
      ],
      "verificationStatus": "verified",
      "verified": true,
      "warnings": []
    }
  ],
  "product": "parthound.source-product.v1",
  "recommendation": {
    "bestRank": 1,
    "rationale": "Best verified match for profile, color, requested quantity, and current availability."
  },
  "request": {
    "constraints": {
      "colors": [
        "almond",
        "ivory",
        "bone"
      ],
      "country": "US",
      "quantity": 6
    },
    "manufacturer": "American Olean",
    "partNumber": "A8262",
    "query": "American Olean A8262 6-inch V-cap countertop tile"
  },
  "searchedAt": "2026-10-03T22:00:00.000Z",
  "service": "PartHound",
  "status": "complete"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://splitpack.net/v1/source-product' \
  -H 'content-type: application/json' \
  --data-raw '{"constraints":{"colors":["almond","ivory","bone"],"country":"US","quantity":6},"manufacturer":"American Olean","partNumber":"A8262","query":"American Olean A8262 6-inch V-cap countertop tile"}'

# 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 - -X POST 'https://splitpack.net/v1/source-product' \
  -H 'content-type: application/json' \
  --data-raw '{"constraints":{"colors":["almond","ivory","bone"],"country":"US","quantity":6},"manufacturer":"American Olean","partNumber":"A8262","query":"American Olean A8262 6-inch V-cap countertop tile"}' \
  | 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 $0.25 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.25" });
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 $0.25 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsplitpack.net%2Fv1%2Fsource-product&method=POST
const res = await pay("https://splitpack.net/v1/source-product", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "constraints": {
      "colors": [
        "almond",
        "ivory",
        "bone"
      ],
      "country": "US",
      "quantity": 6
    },
    "manufacturer": "American Olean",
    "partNumber": "A8262",
    "query": "American Olean A8262 6-inch V-cap countertop tile"
  }),
});
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 $0.25 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.25"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://splitpack.net/v1/source-product",
        json={
            "constraints": {
                "colors": [
                    "almond",
                    "ivory",
                    "bone",
                ],
                "country": "US",
                "quantity": 6,
            },
            "manufacturer": "American Olean",
            "partNumber": "A8262",
            "query": "American Olean A8262 6-inch V-cap countertop tile",
        },
    )
    print(res.status_code, res.text)