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Northline WebKit – URL to Markdown
x402
Northline WebKit – URL to Markdown is a paid API for AI agents from northline-webkit.northline-c86.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).
Fetches a public URL and returns its content converted to clean Markdown text, with title and word count.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call web and domain utilities for AI agents: URL to Markdown, link preview metadata, links, uptime/redirect check, DNS, email-domain check, WHOIS/RDAP, robots.txt and a one-call domain report. x402 (USDC on Base), no API key, no signup.
Output
Returns a JSON object containing the canonical URL, page title, word count, and the page's content rendered as clean Markdown text (up to 20,000 characters by default, configurable up to 50,000).
Example use cases
LLM context from live webpage
“Pull the content of https://docs.openai.com/guides/function-calling as markdown so I can paste it into my prompt — keep it under 15000 characters.”
Research article text extraction
“Grab the text from this research article at https://arxiv.org/abs/2301.07041 and convert it to markdown so I can read through it.”
Competitor landing page snapshot
“Fetch https://www.stripe.com/pricing and turn the page content into markdown — I want to see what pricing info they're showing right now.”
Technical details
Endpoint
GEThttps://northline-webkit.northline-c86.workers.dev/v1/url/markdown?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to convert a live public webpage into Markdown for use in LLM context windows, document pipelines, or readable summaries. It is pay-per-call with no API key or signup required, making it ideal for agent workflows with sporadic, unpredictable scraping needs. Prefer it over browser automation tools when you need lightweight, fast text extraction without JavaScript rendering complexity.
Side effects
- URL is not publicly accessible or requires authentication — returns error
- URL scheme is missing or malformed (minLength < 3) — validation error
- Page returns non-HTML content (PDF, binary) — may return empty or partial markdown
- maxChars out of allowed range (1000–50000) — validation error
- Target server is slow or times out — request timeout error
- Rate limiting or bot protection on target site — fetch failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/",
"title": "Example Domain",
"words": 30,
"markdown": "# Example Domain\n\nThis domain is for use in documentation examples..."
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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