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TeTsuki Gateway

Official registry Other

Checks whether a website has a usable llms.txt. Score 0–100. Free 3/day/IP, then ¥10.

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 (streamable-http)
Claude Code 
claude mcp add --transport http tetsuki-gateway 'https://tetsuki-gateway.vercel.app/mcp' --header 'X-API-Key: <Optional prepaid API key for use after the free quota. Buy credits at https://tetsuki-gateway.vercel.app/.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "tetsuki-gateway": {
            "type": "http",
            "url": "https://tetsuki-gateway.vercel.app/mcp",
            "headers": {
                "X-API-Key": "<Optional prepaid API key for use after the free quota. Buy credits at https://tetsuki-gateway.vercel.app/.>"
            }
        }
    }
}

Documentation

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

Contents
  1. TeTsuki Gateway
  2. Product
  3. Install (Cursor / Claude)
  4. Tools
  5. HTTP API (same tool)
  6. Pricing
  7. License

TeTsuki Gateway

Checks whether a website has a usable llms.txt. Score 0–100. Free 3 checks per day per IP, then ¥10.

Hosted MCP (HTTP): https://tetsuki-gateway.vercel.app/mcp

This is a live fetch of https://{domain}/llms.txt on each call. It is not a world-mandatory gate, and it does not include monitoring history yet.

Product

Install (Cursor / Claude)

Remote MCP URL: https://tetsuki-gateway.vercel.app/mcp

{
  "mcpServers": {
    "tetsuki": {
      "url": "https://tetsuki-gateway.vercel.app/mcp",
      "headers": {
        "X-API-Key": "tsk_your_key_here"
      }
    }
  }
}

Free quota works without a key (3/day/IP). Paid checks need X-API-Key from the homepage purchase.

Tools

NameWhat it does
check_llms_txtFetches /llms.txt for a domain, reports exists/missing, basic shape, and a score from 0 to 100 (0 if missing).

Input: domain (example: example.com).

Response includes source_url, fetched_at, content_hash, score, and whether the file exists.

HTTP API (same tool)

POST https://tetsuki-gateway.vercel.app/api/mcp

{ "tool": "check_llms_txt", "domain": "example.com" }

Pricing

  • Free: 3 checks / day / IP
  • Paid: ¥10 per check (prepaid credits)
  • Current pack: 10 credits = ¥100
  • No monthly plan in this MVP

License

MIT

Frequently asked questions

What is TeTsuki Gateway?

Checks whether a website has a usable llms.txt. Score 0–100. Free 3/day/IP, then ¥10.

How do I install TeTsuki Gateway?

It runs as a remote server. In Claude Code: claude mcp add --transport http tetsuki-gateway 'https://tetsuki-gateway.vercel.app/mcp' --header 'X-API-Key: <Optional prepaid API key for use after the free quota. Buy credits at https://tetsuki-gateway.vercel.app/.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does TeTsuki Gateway need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Is TeTsuki Gateway open source?

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

Who maintains TeTsuki Gateway?

It is published by kairosusunsei. 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.