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WebLens Compare API
x402
WebLens Compare API is a paid API for AI agents from api.weblens.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-30).
Fetches and compares multiple web pages side-by-side using AI, returning structured summaries of similarities and differences
Price / call$0.05
Success—
StatusUnknown
How this service works
# WebLens - Web Intelligence API, pay per call Scrape, crawl, map and extract the web. No account, no API key, no monthly minimum — you pay for the calls you make and nothing else. ## Pricing Page fetching starts at **$0.002**, whole-site crawling at **$0.0015/page**, and sitemap discovery at **$0.004**. Comparable services bill $0.007-0.008 per request, or reach a lower per-page rate only on a $99/month commitment. WebLens has no commitment to reach. ## Payment Protocol All paid endpoints use the [x402 protocol](https://x402.org) for HTTP-native micropayments (USDC on Base). ## Cache Discount Cached responses are **70% cheaper** than fresh fetches.
Output
A JSON object containing the scraped content from each provided URL (with title and text), a comparison object with an AI-generated summary, a list of key differences, and a list of similarities, plus a requestId and timestamp for the comparison.
Example use cases
Competitor product feature comparison
“Compare the feature pages of Notion and Coda — https://www.notion.so/product and https://coda.io/product — and tell me the main differences and what they have in common.”
Side-by-side pricing page analysis
“Pull up the pricing pages for Slack and Microsoft Teams and compare them — I want to know the differences in plans, price points, and any similarities in what they offer.”
Research two news articles on same event
“Compare these two news articles covering the same story and summarize how their reporting differs and where they agree: https://article-a.com and https://article-b.com.”
Technical details
Endpoint
POSThttps://api.weblens.dev/compare?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to compare the content of two or more web pages in a single call with AI-synthesized output — rather than scraping each URL individually and comparing manually. Ideal for competitive intelligence, product research, or content auditing workflows where structured similarity/difference output is needed directly.
Side effects
- One or more URLs are unreachable or return non-200 responses, resulting in partial or failed comparison
- Payment not authorized via x402 protocol, returning 402 Payment Required
- Rate limiting if too many requests are made in quick succession
- Malformed or inaccessible URLs causing extraction errors
- Paywalled or JavaScript-heavy pages may yield incomplete content extraction
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urls | array | Array of 2-3 URLs to compare |
| focus | string | What aspect to focus the comparison on |
Output
Schema · Response
{
"type": "json",
"example": {
"sources": [
{
"url": "https://product-a.com",
"title": "Product A",
"content": "Features: X..."
},
{
"url": "https://product-b.com",
"title": "Product B",
"content": "Features: Y..."
}
],
"requestId": "req_compare456",
"comparedAt": "2026-01-26T12:00:00.000Z",
"comparison": {
"summary": "Product A focuses on...",
"differences": [
"Product A has Z"
],
"similarities": [
"Both offer feature X"
]
}
}
}Tags
x402
Reviews
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