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d402 Web Extract Structured JSON
d402 Web Extract Structured JSON is a paid API for AI agents from gateway.d402.xyz, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Fetches a public web page and extracts structured JSON data matching a requested field list or schema
Price / call$0.01
Success—
StatusDown
How this service works
Paid d402 capability alias for web.extract_structured@1. Workers fetch a page and project observed page data into a requested JSON field set or schema.
Output
Returns a taskId and status, plus a result object containing the extracted data as a JSON object keyed by the requested fields, along with extractedFields, missingFields, contentHash, snapshotCid, fetchedAt timestamp, page title, canonical URL, and evidence items for verification.
Example use cases
Extract competitor pricing from website
“Go to https://rivalcompany.com/pricing and pull out the fields 'plan_name', 'monthly_price', 'annual_price', and 'features_included' for each pricing tier as structured JSON.”
Parse event details into JSON
“Fetch https://techconference.org/schedule and extract the fields 'event_name', 'date', 'location', 'keynote_speakers', and 'registration_url' as structured JSON for me.”
Scrape job listing into schema
“Go to https://jobs.example.com/posting/12345 and give me structured JSON with the fields 'job_title', 'department', 'location', 'salary_range', 'required_skills', and 'application_deadline'.”
Technical details
Endpoint
POSThttps://gateway.d402.xyz/v1/web/extract-structuredWhen to prefer
Use this endpoint when you need to extract arbitrary named fields or a custom JSON schema from any public web page, not just a specific content type like articles or products. It is the most flexible extraction endpoint in the d402 suite. Prefer the specialized endpoints (extract_product, extract_article) for those content types since they return normalized schemas. Use this when the page type is general-purpose or the schema is fully custom.
Side effects
- URL is not publicly accessible or returns non-200 — result will show error status and missing fields
- Requested fields not found on page — missingFields array will list them while extractedFields may be empty
- Timeout exceeded (>45000ms cap) — gateway returns error status
- Malformed or private URL input — rejected with validation error
- Page requires JavaScript-heavy rendering that exceeds worker capability — partial or empty data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Public http(s) URL to fetch and project into structured JSON. |
| sync | boolean | Optional d402 sync flag. Defaults to gateway policy. |
| fields | array | Optional explicit field names to extract when a full schema is not needed. |
| schema | object | Optional JSON Schema-like object. Top-level properties define requested output fields. |
| timeoutMs | number | Optional per-request timeout, capped by gateway policy. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| error | — | |
| links | object | |
| result | object | |
| statusrequired | string | |
| taskIdrequired | string | |
| settlement | — | |
| x402Settlement | — | |
| validationReceipt | — |
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