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HTML to Markdown API

Official registry Productivity

Convert HTML to clean markdown. Strips scripts and styles. x402 micropayment.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse html-to-markdown-api 'https://html-to-markdown.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "html-to-markdown-api": {
            "type": "sse",
            "url": "https://html-to-markdown.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. HTML to Markdown API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

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

ToolMethodPathPriceDescription
text_convert_html_to_markdownPOST/api/convert$0.003Convert 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

NameTypeRequiredDescription
htmlstringyesHTML 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.

License

MIT

Frequently asked questions

What is HTML to Markdown API?

Convert HTML to clean markdown. Strips scripts and styles. x402 micropayment.

How do I install HTML to Markdown API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse html-to-markdown-api 'https://html-to-markdown.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does HTML to Markdown API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is HTML to Markdown API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains HTML to Markdown API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.