Stay Cost Brain
REMOTE · STAYCOSTBRAIN.COM
Tourist and hotel taxes from official sources, worked out night by night for your dates and guests.
Available components
Last scanned (8 hours ago)
Scores higher than 57% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
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. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability63
- AI-judged instruction clarity (good).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +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.
- 3 Nov 26 +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.
- 1 Nov 26 +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.
- 30 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 29 Oct 26 67
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://staycostbrain.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=staycostbrain.com | CN=WE1,O=Google Trust Services,C=US | 20 Oct 2026 | 18 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | e2f5cb9f09bebc5013b84e609aa9c0f8 |
| SANs: staycostbrain.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of staycostbrain.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| staycostbrain.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://staycostbrain.com/mcp | Verified | 200 | |
| http (plaintext) | http://staycostbrain.com/mcp | HTTPS enforced | 301 | https://staycostbrain.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_capabilities Get capabilities ~46
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.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| method | string | – | – |
| note | string | – | – |
| places | array | – | – |
No examples provided.
hotels_link Hotels link ~225
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | 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 |
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| for | string | – | – |
| note | string | – | – |
| url | string | – | – |
No examples provided.
list_places List places ~54
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.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| note | string | – | – |
| places | array | – | – |
No examples provided.
place_rules Place rules ~101
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.
| Name | Type | Req | Description |
|---|---|---|---|
| place | string | yes | A researched place ('Lisbon', 'Algarve', 'Paris') or any town ('Quarteira', 'Funchal', 'Kyoto') |
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| note | string | – | – |
| place | object | – | – |
| taxes | array | – | – |
No examples provided.
tourist_tax Tourist tax ~374
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | 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 | yes | Number of nights from check_in (1-60) |
| place | string | yes | 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. |
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| note | string | – | – |
| page | string | – | – |
| researched | boolean | – | – |
| taxes | array | – | – |
| total | object | – | – |
No examples provided.
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.
remote · staycostbrain.com
claude mcp add --transport http com-staycostbrain-stay-cost-brain 'https://staycostbrain.com/mcp'
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.