# Stay Cost Brain (remote · staycostbrain.com)

Tourist and hotel taxes from official sources, worked out night by night for your dates and guests.

- Trust score: 71/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `staycostbrain.com`: 71/100 (this document), [markdown](https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain.md), [page](https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain)

## Channel facts

- Endpoint: `https://staycostbrain.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 63/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 953 tokens (~190/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Stay Cost Brain MCP server?

Stay Cost Brain is a hosted endpoint at https://staycostbrain.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-staycostbrain-stay-cost-brain 'https://staycostbrain.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-staycostbrain-stay-cost-brain": {
      "url": "https://staycostbrain.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-staycostbrain-stay-cost-brain": {
      "type": "http",
      "url": "https://staycostbrain.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-staycostbrain-stay-cost-brain]
url = "https://staycostbrain.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-staycostbrain-stay-cost-brain": {
      "type": "remote",
      "url": "https://staycostbrain.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-staycostbrain-stay-cost-brain --url 'https://staycostbrain.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-staycostbrain-stay-cost-brain:
    url: "https://staycostbrain.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-staycostbrain-stay-cost-brain": {
      "Transport": "http",
      "Url": "https://staycostbrain.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-staycostbrain-stay-cost-brain -t streamable-http -u 'https://staycostbrain.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-staycostbrain-stay-cost-brain": {
      "type": "http",
      "url": "https://staycostbrain.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 68, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-29 (score 67)

First indexed and scored.

## MCP tools (5)

### `get_capabilities` (~46 tokens)

Get capabilities

What Stay Cost Brain covers: the researched places, how the tax figures are sourced and dated, what it does not do (no room prices, no booking), and the sister services.

Output parameters:

- `error` (string)
- `method` (string)
- `note` (string)
- `places` (array)

### `list_places` (~54 tokens)

List places

Every place with a researched tourist-tax table: name, country, today's headline rate, the date it was checked, the next re-check date, the towns that set their own tax, and the page with every rate and source.

Output parameters:

- `error` (string)
- `note` (string)
- `places` (array)

### `tourist_tax` (~374 tokens)

Tourist tax

The tourist tax for one stay, worked out night by night: each tax that applies (regional and city parts separately), the amount or the range when the star rating or type of stay is not given, how many nights are charged, how it is paid, announced changes in force on those nights, and the official source and date for each. Accepts a researched place or any town; towns outside the researched places return researched=false. Percentage taxes need room_price_total. Residents', medical and other special exemptions are listed in `rules`, not applied.

Input parameters:

- `adults` (integer): Default 2
- `adults_70_plus` (integer): How many of the adults are 70 or over
- `area` (string): Area/zone code where a place has zones (e.g. Venice)
- `check_in` (string, required): YYYY-MM-DD
- `child_ages` (array): Age of each child on check-in, one entry per child (many taxes exempt under-12s, -16s or -18s); omit for none
- `local_category` (string): The authority's own category label, as returned in options
- `nights` (integer, required): Number of nights from check_in (1-60)
- `place` (string, required): A researched place ('Lisbon', 'Algarve', 'Paris') or any town ('Quarteira', 'Funchal', 'Kyoto')
- `room_price_total` (number): Room price for the whole stay, for percentage taxes
- `rooms` (integer): Default 1 (for per-room taxes)
- `town` (string): Town or municipality inside a region (e.g. 'Albufeira' in the Algarve)
- `type_of_stay` (string): Hotel stars, apartment, holiday rental, etc.

Output parameters:

- `error` (string)
- `note` (string)
- `page` (string)
- `researched` (boolean)
- `taxes` (array)
- `total` (object)

### `place_rules` (~101 tokens)

Place rules

Every tourist-tax rule for one researched place: each tax with its authority, legal basis, rates by type of stay, season and area, night caps, exemptions, how it is paid, valid dates and status (verified, inferred, announced), with source links and dates.

Input parameters:

- `place` (string, required): A researched place ('Lisbon', 'Algarve', 'Paris') or any town ('Quarteira', 'Funchal', 'Kyoto')

Output parameters:

- `error` (string)
- `note` (string)
- `place` (object)
- `taxes` (array)

### `hotels_link` (~225 tokens)

Hotels link

A link to live hotel and rental prices for a place or any town and the given dates and guests (Stay22, showing Booking.com, Expedia, Agoda, Vrbo and others). The person sees prices and books there; this tool returns no prices and books nothing. Stay Cost Brain may earn a commission on bookings.

Input parameters:

- `adults` (integer): Adults staying (default 2)
- `check_in` (string): YYYY-MM-DD
- `child_ages` (array): Age of each child on check-in, one entry per child (many taxes exempt under-12s, -16s or -18s); omit for none
- `nights` (integer): Number of nights from check_in (1-60)
- `place` (string, required): A researched place ('Lisbon', 'Algarve', 'Paris') or any town ('Quarteira', 'Funchal', 'Kyoto')
- `town` (string): Town inside the place to search in (e.g. 'Albufeira' in the Algarve); omit for the whole place

Output parameters:

- `error` (string)
- `for` (string)
- `note` (string)
- `url` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain#diagnostics

## Score history

- 2026-11-05: 71
- 2026-11-04: 70
- 2026-11-03: 70
- 2026-11-02: 69
- 2026-11-01: 69
- 2026-10-31: 68
- 2026-10-30: 68
- 2026-10-29: 67

## Common questions

### What is the Stay Cost Brain MCP server?

Stay Cost Brain is an MCP server listed in the public MCP registry as com.staycostbrain/stay-cost-brain. Tourist and hotel taxes from official sources, worked out night by night for your dates and guests. This page covers its hosted endpoint (https://staycostbrain.com/mcp).

### Is the Stay Cost Brain MCP server safe to use?

Stay Cost Brain scores 71 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Stay Cost Brain MCP server expose?

Stay Cost Brain exposes 5 tools: get_capabilities, list_places, tourist_tax, place_rules, hotels_link. Their descriptions and schemas cost roughly 800 tokens of context every time the server is loaded.

### Does the Stay Cost Brain MCP server require authentication?

No. We connected to Stay Cost Brain without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Stay Cost Brain MCP server still maintained?

Stay Cost Brain is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the Stay Cost Brain MCP server?

VerifyMCP ran 13 checks on Stay Cost Brain, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://staycostbrain.com/mcp
- Repository: https://github.com/jimiwalters-cmyk/stay-cost-brain-mcp
- Website: https://staycostbrain.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain.json
- HTML version of this page: https://verifymcp.io/servers/com-staycostbrain-stay-cost-brain/staycostbrain