Markdown Renderer API
Render Markdown to styled HTML with CSS themes -- light, dark, GitHub. Ready-to-embed HTML documents. 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-renderer": {
"url": "https://markdown-renderer.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://markdown-renderer.api.klymax402.com/api/render" \
-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_render_markdown | POST | /api/render | $0.005 | Render markdown to styled HTML |
text_render_markdown
Use this when you need to convert Markdown to a fully styled HTML document with embedded CSS. Returns a complete, display-ready HTML page in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
markdown | string | yes | Markdown text to render |
theme | string | no | CSS theme: 'light', 'dark', or 'github' (default: github) |
Example response:
{"html":"<!DOCTYPE html><html><head><style>body{font-family:system-ui;max-width:800px;margin:auto}...</style></head><body><h1>Title</h1><p>Content</p></body></html>","theme":"github","inputLength":25,"outputLength":1240}
When to use: generating styled documentation pages, creating email-ready HTML from markdown, building preview renders, and producing embeddable content blocks.
Not for: raw HTML conversion (no CSS) (use text_convert_markdown_to_html), PDF generation (use document_generate_pdf).
Example agent prompts
- "Convert Markdown to a fully styled HTML document with embedded CSS"
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