Markdown to HTML API
Convert Markdown to clean HTML -- headings, lists, code blocks, tables, links, images. Optional full document wrap. 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": {
"markdown-to-html": {
"url": "https://markdown-to-html.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://markdown-to-html.api.klymax402.com/api/convert" \
-H "Content-Type: application/json" \
-d '{"markdown":"..."}'
# -> 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_markdown_to_html | POST | /api/convert | $0.003 | Convert markdown text to HTML |
text_convert_markdown_to_html
Use this when you need to convert Markdown text to clean HTML. Returns the converted HTML in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
markdown | string | yes | Markdown text to convert |
wrapInDocument | boolean | no | Wrap output in full HTML document (default: false) |
Example response:
{"html":"<h1>Hello World</h1>\n<p>This is <strong>bold</strong> and <em>italic</em>.</p>","inputLength":42,"outputLength":68}
When to use: rendering markdown content in web apps, converting README files, building documentation pages, and email template generation from markdown.
Not for: HTML to markdown (use text_convert_html_to_markdown), styled HTML with CSS themes (use text_render_markdown), PDF generation (use document_generate_pdf).
Example agent prompts
- "Convert Markdown text to clean HTML"
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