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HTML to Markdown Converter (Rainmaker WELL-004)
x402
HTML to Markdown Converter (Rainmaker WELL-004) is a paid API for AI agents from well-004-html-to-markdown.rainmaker-wells.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Converts HTML content (directly supplied or fetched from a public URL) into clean, tidy Markdown, returning the result as JSON for $0.005 USDC per call via x402 payment.
Price / call$0.005
Success—
StatusUnknown
How this service works
Convert HTML to tidy markdown ($0.005 USDC via x402). Pass html (string) and/or url (public https to fetch). At least one required; if both, prefers html and warns. URL fetches use the same allowlist as WELL-002 (https only — http/file/data/localhost/private IPs rejected; 1 MB body, ~10s timeout, max 5 redirects). Returns JSON { source, url?, final_url?, content_type?, markdown, warnings }.
Output
A JSON object containing: 'source' (whether input was 'html' or 'url'), optional 'url' and 'final_url' (after redirects), optional 'content_type' of the fetched page, 'markdown' (the converted Markdown string), and 'warnings' (array of any processing warnings, e.g. if both html and url were supplied).
Example use cases
LLM context from a web article
“Take the HTML from https://www.bbc.com/news/technology-12345678 and convert it to markdown — I want to feed it into a prompt without all the HTML noise.”
Paste HTML snippet as markdown
“I've got this raw HTML snippet from our CMS — can you convert it to clean markdown? Here it is: <h1>Hello World</h1><p>This is a <strong>test</strong> paragraph.</p>”
Docs site to markdown for archiving
“Grab the page at https://docs.example.com/getting-started and turn its HTML into markdown so I can store a readable version in our knowledge base.”
Technical details
Endpoint
POSThttps://well-004-html-to-markdown.rainmaker-wells.workers.dev/mcp?utm_source=zero.xyz#html-to-markdown#html-to-markdownWhen to prefer
Choose this endpoint when you need a simple, reliable, paid-per-call HTML-to-Markdown conversion with optional remote URL fetching built in. It is ideal for agents that need to ingest web page content as Markdown for LLM prompts, knowledge bases, or document pipelines. Prefer it over DIY scraping when you want a single API call that handles both fetching and conversion with sensible security guardrails (allowlist, redirect limits, size cap). It is not suitable for private/intranet URLs, bulk batch conversions, or non-HTML formats like PDFs.
Side effects
- Non-HTTPS URLs (http, file, data, localhost, private IPs) are rejected with an error
- URL fetch timeout after ~10 seconds
- Response body exceeds 1 MB limit — fetch is aborted
- More than 5 redirects causes the fetch to fail
- Neither html nor url parameter provided — returns error requiring at least one
- If both html and url are provided, html is used and a warning is returned
- Malformed or unparseable HTML may produce degraded or partial markdown output
Tags
x402
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