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paid-md Research Brief
x402
paid-md Research Brief is a paid API for AI agents from paid-md.hihat.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-27).
Crawls up to 8 URLs and synthesizes a cited, multi-source research brief as structured JSON in response to a question or instruction
Price / call$0.02
Success—
StatusUnknown
How this service works
Multi-page research brief with cited sources. Crawl one URL and follow its links, or pass a list of URLs, and get a synthesized answer to your question as JSON with a sources array, optionally shaped by your JSON Schema. Use it to compare several pages, gather a list across a site, summarise a topic from multiple sources, or answer a question that spans documents. Up to 8 pages per call, typically 99% fewer tokens than reading the pages yourself.
Output
A JSON object containing a synthesized, cited answer to the research question or instruction, including a 'sources' array listing the URLs used. The response can be shaped into a custom structure if a JSON Schema is provided. Typically uses 99% fewer tokens than reading the raw pages directly.
Example use cases
Competitor pricing comparison
“Go to https://linear.app/pricing and follow its links, then compare Linear's pricing tiers against what you find on https://www.atlassian.com/software/jira/pricing — give me a synthesized comparison with sources, up to 8 pages total.”
Topic research from a documentation site
“I need a summary of how React Server Components work — start at https://react.dev/blog/2023/03/22/react-labs-what-we-have-been-working-on-march-2023 and follow up to 5 linked pages, then synthesize an answer with cited sources.”
Gathering a list across multiple pages
“Can you crawl https://hn.algolia.com and follow links to collect a list of the top AI startup launches mentioned across the site this week? Synthesize the results into a JSON list with company names, descriptions, and source URLs, using up to 8 pages.”
Technical details
Endpoint
POSThttps://paid-md.hihat.workers.dev/research?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to synthesize information from multiple web pages into a single coherent answer with cited sources — especially when a question spans several documents, pages link to each other, or you want to compare content across a site. It is superior to single-page scrapers when multi-document aggregation is needed, and far more token-efficient than reading raw HTML yourself. Use when you have a seed URL to crawl or an explicit list of up to 8 URLs.
Side effects
- Seed URL is unreachable or returns non-200 response
- Linked pages are behind authentication or paywalls, limiting crawl depth
- Requested depth exceeds maximum of 8 pages
- Malformed or conflicting JSON schema causes structured output to fail
- Pages contain insufficient content to answer the question
- Rate limiting or bot detection on target sites blocks fetching
- Payment of $0.05 USDC not completed, request rejected via x402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Seed url; links on the page are followed. |
| urls | array | Explicit list instead of a seed. No crawl, fetched in parallel. |
| depth | integer | How many pages to use. Defaults to 5 for a seed, 8 for an explicit list. |
| schema | object | |
| instructions | string |
Tags
x402
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