For AI assistants
Use Stay Cost Brain in ChatGPT and Claude
Ask an assistant what tax a stay adds and get the answer from the authorities' own pages, dated, for 71 places in 18 countries (27 in the US). Free, read-only, no account.
Connect
Claude (web, desktop, mobile): find Stay Cost Brain in the connectors directory and connect it, or add a custom connector with the URL below.
Claude Code: claude mcp add --transport http stay-cost-brain https://staycostbrain.com/mcp, or install
the plugin: /plugin marketplace add jimiwalters-cmyk/stay-cost-brain-mcp.
ChatGPT: Plugins → Add → Add custom MCP server, with the URL below and no authentication.
Any MCP client (streamable HTTP, no sign-in):
https://staycostbrain.com/mcp
What the tools answer
| Tool | What it answers |
|---|---|
| tourist_tax | The tax for one stay, night by night: each tax separately, the amount or range, nights charged, how it's paid, announced changes, source and date. |
| place_rules | Every rule for one place: rates by type of stay, seasons, caps, exemptions and sources. |
| list_places | Every researched place with today's headline rate and the date it was checked. |
| hotels_link | A link to live hotel prices for the dates and guests, where the person books. |
| get_capabilities | What is covered, how figures are sourced and what the tools don't do. |
Towns we haven't researched come back as not researched, with no figure.
The same answers as JSON
Every rate in one file: llms-full.txt · summary: llms.txt · discovery: /.well-known/mcp.json
Citing us
Link the place's page: it has every rate, the official source and the date we checked it. Say the figure is the published rate, not a quote: the accommodation charges what is in force on the night. Hotel links may earn us a commission; that never changes a tax figure (how we earn).
Privacy for tool calls: privacy · questions: [email protected]