Compare two to four product pages by verified identity, listed price, availability, shippi
Compare two to four product pages by verified identity, listed price, availability, shipping cost and rating without converting currencies.
10000 (raw units)
price
5
calls / 30d
4
unique payers
2026-09-14
updated
Provider
fetch.halowerk.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"currency_hint": "GBP",
"urls": [
"https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html",
"https://books.toscrape.com/catalogue/tipping-the-velvet_999/index.html"
],
"want_variants": false
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"compared": 2,
"comparison": {
"currencies": [
"EUR"
],
"identity_matches": [
{
"product_indices": [
0,
1
],
"type": "gtin",
"value": "4006381333931"
}
],
"lowest_listed_price_by_currency": [
{
"compared_offers": 2,
"currency": "EUR",
"lowest_value": 19.9,
"product_indices": [
0
]
}
],
"same_product_proven": true,
"warnings": []
},
"failed": 0,
"fetched_at": "2026-08-30T10:00:00Z",
"methodology": {
"price": "Only stated prices are ranked; currencies are never converted."
},
"products": [
{
"index": 0,
"input_url": "https://shop-a.example/item",
"price": {
"currency": "EUR",
"value": 19.9
},
"product": {
"gtin": "4006381333931",
"name": "Example widget"
}
},
{
"index": 1,
"input_url": "https://shop-b.example/item",
"price": {
"currency": "EUR",
"value": 21.5
},
"product": {
"gtin": "4006381333931",
"name": "Example widget"
}
}
],
"requested": 2
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"currency_hint": {
"description": "ISO 4217 code used only to disambiguate symbols and decimal notation. No currency conversion is performed.",
"pattern": "^[A-Za-z]{3}$",
"type": "string"
},
"respect_robots": {
"default": true,
"description": "Honour every origin robots.txt.",
"type": "boolean"
},
"urls": {
"description": "Two to four distinct product-page URLs. At least two must yield a useful product offer or the call is not charged.",
"items": {
"format": "uri",
"type": "string"
},
"maxItems": 4,
"minItems": 2,
"type": "array",
"uniqueItems": true
},
"want_variants": {
"default": false,
"description": "Also collect each page’s variants. The ranking still compares the primary listed offer.",
"type": "boolean"
}
},
"required": [
"urls"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"compared": {
"maximum": 4,
"minimum": 2,
"type": "integer"
},
"comparison": {
"properties": {
"buyable_product_indices": {
"items": {
"type": "integer"
},
"type": "array"
},
"currencies": {
"items": {
"type": "string"
},
"type": "array"
},
"highest_rating_by_scale": {
"items": {
"type": "object"
},
"type": "array"
},
"identity_matches": {
"items": {
"type": "object"
},
"type": "array"
},
"lowest_listed_price_by_currency": {
"items": {
"type": "object"
},
"type": "array"
},
"lowest_shipping_cost_by_currency": {
"items": {
"type": "object"
},
"type": "array"
},
"same_product_proven": {
"type": "boolean"
},
"unavailable_product_indices": {
"items": {
"type": "integer"
},
"type": "array"
},
"warnings": {
"items": {
"type": "string"
},
"type": "array"
}
},
"type": "object"
},
"failed": {
"maximum": 2,
"minimum": 0,
"type": "integer"
},
"failures": {
"items": {
"type": "object"
},
"type": "array"
},
"fetched_at": {
"format": "date-time",
"type": "string"
},
"methodology": {
"type": "object"
},
"products": {
"items": {
"type": "object"
},
"minItems": 2,
"type": "array"
},
"requested": {
"maximum": 4,
"minimum": 2,
"type": "integer"
}
},
"required": [
"requested",
"compared",
"products",
"comparison",
"methodology",
"fetched_at"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://fetch.halowerk.com/product/compare" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://fetch.halowerk.com/product/compare");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://fetch.halowerk.com/product/compare")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/7990.json, and this resource appears in /discovery/resources and /discovery/search.