HTML to Markdown API
Convert HTML to clean Markdown -- strips scripts/styles, preserves headings, links, lists, images. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"html-to-markdown": {
"url": "https://html-to-markdown.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://html-to-markdown.api.klymax402.com/api/convert" \
-H "Content-Type: application/json" \
-d '{"html":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
text_convert_html_to_markdown | POST | /api/convert | $0.003 | Convert HTML to markdown |
text_convert_html_to_markdown
Use this when you need to convert HTML to clean Markdown text. Returns the converted markdown in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
html | string | yes | HTML content to convert to markdown |
Example response:
{"markdown":"# Hello World\n\nThis is **bold** and *italic*.\n\n[Link](https://example.com)","inputLength":156,"outputLength":68,"strippedElements":["script","style"]}
When to use: converting web content to LLM-friendly format, migrating CMS content, cleaning up HTML emails, and preparing content for markdown-based systems.
Not for: markdown to HTML (use text_convert_markdown_to_html), web scraping (fetching + converting) (use web_scrape_to_markdown), PDF generation (use document_generate_pdf).
Example agent prompts
- "Convert HTML to clean Markdown text"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT