Compare two webpage versions and return only meaningful content changes as structured JSON
Compare two webpage versions and return only meaningful content changes as structured JSON. Filters cosmetic DOM churn, tracking IDs, timestamps, and other noise.
20000 (raw units)
price
3
calls / 30d
1
unique payers
2026-09-16
updated
Provider
i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x94bab5853bff59401b355371f9c4b8ca6d6eca9d",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "20000",
"maxTimeoutSeconds": 120
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"mode": "text",
"newContent": "Price: $12/month",
"oldContent": "Price: $10/month"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"changes": [],
"confidence": 0.94,
"ignoredNoise": [],
"meaningfulChange": true,
"severity": "high",
"summary": "1 meaningful content change detected."
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"anyOf": [
{
"additionalProperties": false,
"properties": {
"contentType": {
"enum": [
"html",
"markdown",
"text"
],
"type": "string"
},
"focus": {
"items": {
"type": "string"
},
"type": "array"
},
"mode": {
"const": "text",
"type": "string"
},
"newContent": {
"type": "string"
},
"oldContent": {
"type": "string"
}
},
"required": [
"mode",
"oldContent",
"newContent"
],
"type": "object"
},
{
"additionalProperties": false,
"properties": {
"focus": {
"items": {
"type": "string"
},
"type": "array"
},
"mode": {
"const": "url",
"type": "string"
},
"newUrl": {
"format": "uri",
"type": "string"
},
"oldUrl": {
"format": "uri",
"type": "string"
}
},
"required": [
"mode",
"oldUrl",
"newUrl"
],
"type": "object"
}
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"changes": {
"items": {
"additionalProperties": false,
"properties": {
"category": {
"type": "string"
},
"confidence": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"evidenceNew": {
"type": "string"
},
"evidenceOld": {
"type": "string"
},
"newValue": {
"type": "string"
},
"oldValue": {
"type": "string"
},
"severity": {
"enum": [
"low",
"medium",
"high",
"critical"
],
"type": "string"
}
},
"required": [
"category",
"severity",
"oldValue",
"newValue",
"evidenceOld",
"evidenceNew",
"confidence"
],
"type": "object"
},
"type": "array"
},
"confidence": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"ignoredNoise": {
"items": {
"type": "string"
},
"type": "array"
},
"meaningfulChange": {
"type": "boolean"
},
"severity": {
"enum": [
"none",
"low",
"medium",
"high",
"critical"
],
"type": "string"
},
"summary": {
"type": "string"
}
},
"required": [
"meaningfulChange",
"severity",
"confidence",
"summary",
"changes",
"ignoredNoise"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"payment-identifier": {
"required": false
}
}Use it
curl
curl "https://i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws/v1/semantic-web-diff" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws/v1/semantic-web-diff");
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://i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws/v1/semantic-web-diff")
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/7902.json, and this resource appears in /discovery/resources and /discovery/search.