# 24K Labs Markdown to HTML Converter

> 24K Labs Markdown to HTML Converter is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Converts a Markdown string into rendered HTML, returning the full HTML markup as a string.

## Facts

- Endpoint: POST https://api.24klabs.ai/api/markdown-to-html
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/24k-labs-markdown-to-html-converter-7bd13e2e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-qaRfcS4rs69MlyCZDZaU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 24k-labs-markdown-to-html-converter-7bd13e2e -d '<json body>'
```

Example prompt: Convert this markdown to HTML for me: '# Hello World\n\nHere is some **bold** text and a list:\n- item one\n- item two'

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call Markdown-to-HTML conversion without setting up a local parser library. It is ideal for agents that occasionally need to render markdown content in contexts where a full markdown library is not available, such as dynamically rendering user-submitted markdown for web display, email templates, or CMS injection. At $0.002 USDC per call it is cost-effective for low-to-moderate volume use cases that don't justify bundling a local dependency.

## Known failure modes

- Empty or missing markdown body returns an error or empty html string
- Extremely large markdown payloads may time out or be rejected
- Malformed JSON request body returns a 400-level error
- Payment failure via x402 protocol results in a 402 Payment Required response before processing

## How this service works

A curated directory of x402 services — each one on the list on purpose, with the health, uptime, and independent trust grades from across the ecosystem gathered in one place.

## Output

A JSON object containing a single 'html' field with the fully rendered HTML string. For example, headings become <h1>/<h2> tags, bold text becomes <strong>, code becomes <code>, and lists become <ul><li> elements. The HTML is ready to inject directly into a web page or email template.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "markdown": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "html": "<h1>Title</h1>\n<p>Hello <strong>world</strong> and <code>code</code>.</p>\n<ul>\n<li>one</li>\n<li>two</li>\n</ul>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/24k-labs-markdown-to-html-converter-7bd13e2e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.24klabs.ai](https://www.zero.xyz/host/api.24klabs.ai/llms.txt)