Ask your AI about saunas.

Saunasto runs a public Model Context Protocol (MCP) server. Connect it to Claude, ChatGPT, Cursor or any MCP-compatible client, and your assistant can search the atlas directly: 73,000+ sauna and bathing venues across 199 countries, including 27,000+ dedicated saunas.

Endpoint

https://saunasto-mcp.fly.dev/mcp

Streamable HTTP, no authentication, no API key. Results are summaries with links back to saunasto.com; full venue detail (addresses, hours, photos) lives on the venue pages and in the iOS app.

What your assistant can do

• search_saunas: find venues by name, city or country ("banya in Berlin", "onsen in Hakone").
• get_venue: a one-glance summary of any venue, with its saunasto.com link.
• get_metro_stats: how many saunas, bathhouses and hot springs a city or country has, by type.
• list_metros: the biggest sauna cities in the index.
• get_company_info: what Saunasto is, with honest dataset numbers.

Claude

In claude.ai or the Claude apps: Settings → Connectors → Add custom connector, paste the endpoint URL above.

In Claude Code:

claude mcp add --transport http saunasto https://saunasto-mcp.fly.dev/mcp

Cursor / Windsurf / other clients

Add to your client's MCP config:

{
  "mcpServers": {
    "saunasto": { "type": "http", "url": "https://saunasto-mcp.fly.dev/mcp" }
  }
}

ChatGPT

Settings → Connectors → Advanced → Developer mode, then add the endpoint URL as a custom connector.

Try it without a client

curl -X POST https://saunasto-mcp.fly.dev/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call",
       "params":{"name":"search_saunas",
                 "arguments":{"city":"Helsinki"}}}'

Fair use

The endpoint is free and rate-friendly for personal assistant use. It intentionally serves summaries, not the full dataset: searches return at most 10 results and venue records omit addresses, coordinates and contact details. If you need deeper data access, email [email protected].