# Webpage Fields with Source Quotes

> Webpage Fields with Source Quotes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-01).

Fetches a public HTTPS webpage and extracts up to 3 named fields from its first 3,000 characters using local AI, returning each value with a verbatim source quote.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-webpage-field-extraction?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/webpage-fields-with-source-quotes-86ff7b8f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iJmUBKgYN9IWg3ncibuO3

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability webpage-fields-with-source-quotes-86ff7b8f -d '<json body>'
```

Example prompt: Read the page at https://www.example-company.com/about and extract the fields 'organization', 'founding_year', and 'headquarters' — I need the exact quote from the page for each one.

## When to prefer this

Choose this endpoint when you need to pull a small number of specific named fields from a known static public webpage and require a verifiable source quote for each extracted value. It is ideal for lightweight, citation-backed extraction tasks where JavaScript rendering is not needed and cost must be kept low ($0.01 per call). Prefer alternatives if you need to scrape dynamic/JS-heavy pages, extract more than 3 fields at once, or process large amounts of page text beyond 3,000 characters.

## Known failure modes

- URL requires JavaScript rendering — returns null for all fields since only static HTML is parsed
- Page returns non-200 HTTP status — extraction fails with an error
- Field value does not appear in the first 3,000 characters — returns null for that field
- HTTPS not available or URL is not public — request rejected
- Requested more than 3 fields — input validation error
- Field name exceeds 40 characters — input validation error

## How this service works

Webpage Fields with Source Quotes: Read one public static HTTPS page and extract up to three named fields from its first 3,000 text characters using local AI. Each non-null value must occur in an exact source quote. No JavaScript rendering; missing or unsupported values return null. 0.01 USDC includes up to 3 fields from one webpage.

## Output

A JSON object mapping each requested field name to its extracted value (or null if not found or not supported), along with a verbatim source quote from the page text confirming each non-null value. Results are based on the first 3,000 text characters of the fetched page, with no JavaScript rendering.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "https://www.iana.org/help/example-domains",
   "maxLength": 2048,
   "minLength": 1
  },
  "fields": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 40,
    "minLength": 1
   },
   "default": [
    "organization",
    "purpose"
   ],
   "maxItems": 3,
   "minItems": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/webpage-fields-with-source-quotes-86ff7b8f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)