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SchemaFetch Custom JSON Schema Web Extractor
x402
SchemaFetch Custom JSON Schema Web Extractor is a paid API for AI agents from schemafetch.panmediatech.workers.dev, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-13).
Extracts structured data from a web page according to a user-supplied JSON schema, returning filled fields with confidence scores and source attribution
Price / call$0.04
Success—
StatusUnknown
How this service works
Custom JSON-schema web extract for AI agents: POST url + your schema, get filled fields with confidence and sources. Task-shaped page data without Firecrawl clones. Pay-per-call x402 USDC on Base ($0.04). No API key, no account.
Output
A JSON object containing: a 'data' field with the schema fields populated from the page, a 'confidence' number (0-1) indicating overall extraction reliability, a 'sources' array citing which parts of the page each value came from, a 'fetched_at' ISO timestamp, and optionally 'cache' (hit/miss) and 'preset' metadata.
Example use cases
Example prompt
“Fetch this product page — https://example.com/product/42 — and fill out this schema for me: {"name": "string", "price": "number", "availability": "string", "description": "string"}, and tell me how confident you are for each field.”
Technical details
Endpoint
POSThttps://schemafetch.panmediatech.workers.dev/x402/extract/customWhen to prefer
Use this endpoint when you need to extract specific, schema-defined fields from a web page and want per-field confidence scores and source attribution — without setting up an API key or account. Prefer it over general scraping tools when you have a precise data model in mind and want task-shaped output rather than raw HTML or markdown. It is especially useful for one-off extractions billed per call at $0.04 USDC via x402 on Base, making it cost-effective for low-volume or ad-hoc agent workflows.
Side effects
- URL is unreachable or returns non-200 — extraction fails with error response
- Schema fields have no matching content on the page — fields returned empty or null with low confidence
- Page is JavaScript-heavy SPA and content is not server-rendered — may return incomplete data
- Malformed JSON schema in request body — returns schema validation error
- Rate limiting or payment failure via x402 — transaction rejected before extraction begins
- Page blocks crawlers via robots.txt or WAF — fetch blocked, no data returned
Tags
x402
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