HTML to Markdown API

io.github.Br0ski777Published by GitHub account Br0ski777v1.1.0Updated Oct 24, 2026

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

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Overview

AI-generated overview

A remote MCP endpoint that converts HTML into clean Markdown, billed per call through x402 micropayments in USDC.

What you can do
Convert a supplied HTML string into clean Markdown text, returned as JSON with input and output lengths and a list of stripped elements.
When to use it
Useful when an assistant needs to turn web content, CMS exports or HTML emails into LLM-friendly Markdown, and a small per-call crypto payment is acceptable.
Requirements
A remote SSE endpoint; no API key, signup or environment variables. Payment requires an x402-capable client with a wallet holding USDC on Base L2, which handles the 402 challenge, signing and retry.
Before you install
Each conversion costs $0.003 in USDC on Base, so a connected wallet can spend funds automatically. The HTML you send goes to a third-party service. The README notes it does not do Markdown-to-HTML, scraping or PDF generation.

Installation

In SourceWeft

  1. Open HTML to Markdown API in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via SSE. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Br0ski777%2Fhtml-to-markdown/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "html-to-markdown-api": {
      "type": "sse",
      "url": "https://html-to-markdown.api.klymax402.com/mcp"
    }
  }
}

README

HTML to Markdown API

[MCP Server] [x402] [License: MIT]

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.):

json
{  "mcpServers": {    "html-to-markdown": {      "url": "https://html-to-markdown.api.klymax402.com/mcp"    }  }}

Quickstart -- HTTP (x402)

bash
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:

json
{"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

Source: README.md at commit 94cc5db

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v1.1.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts