QAmcp

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Directory / hotels

hotels

Q: Is hotels MCP server safe?

QAmcp's test on 5 Nov 2026: None of the hidden-instruction wordings we know were found in its 7 tool descriptions. Its error messages showed no secrets or internal details. 6 of its 7 tools are labeled read-only; the others may change or send things. Overall it scored 70/100 on 5 Nov 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by fostay.com · https://fostay.com/api/mcp

Hotel search, live prices and rate holds in 9 cities incl. Dubai, Sydney, Madrid; pay on fostay.com

7 tools✓ no account neededPricing: not listed

Visit website

70 /100

FAIL

13 of 13 checks · 5 Nov 2026

Test it now for current results

At a glance

Runs where: On their server. What you send to it goes to them.
What you need: Nothing: it answered without a login
Tools: 7 tools
Its own safety labels: 6 read-only, 1 labeled as changing things
Memory it takes: About 2,700 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 22.1 KB in our test
Speed: Average answer in our test: 1.5 s

Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 5 Nov 2026.

Is hotels MCP server safe?

None of the hidden-instruction wordings we know were found in its 7 tool descriptions.
Its error messages showed no secrets or internal details.
6 of its 7 tools are labeled read-only; the others may change or send things.
Overall it scored 70/100 on 5 Nov 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What this test does not check

Its source code and packages.
What a tool quietly does behind the scenes, such as writing a file or calling another service.
Instructions hidden inside live tool answers. We only look for those in tool descriptions.
Hidden instructions worded in a way our list doesn't know yet.
Tools that could change something. Those are read, never run.

What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection

Known security advisories

It lists no public code, so there is nothing to look up in GitHub Security Advisories or OSV.dev. QAmcp tests how a server behaves. It does not scan source code.

What it can do

7 tools, in the server's own words.

search_staysread-only

Search hotels in Dubai, Abu Dhabi, Goa, Sydney, Melbourne, Auckland, Singapore, Madrid or Barcelona.

get_live_ratesread-only

Live bookable room offers for one hotel and stay dates: total all-in price (in the hotel's home currency: INR for Goa, AED for Dubai and Abu Dhabi, AUD, NZD, S…

demand_calendarread-only

Fostay's editorial demand calendar (UAE only — Dubai and Abu Dhabi; Goa has no event calendar yet): the upcoming date windows where Dubai and Abu Dhabi hotels …

event_staysread-only

Where to stay for a major UAE event, in one call: hotels grouped by distance to the venue (at the venue, nearby, rest of the city), each with live all-in price…

when_to_goread-only

Prices upcoming weekends (Fri–Sun, 2 nights) to find the cheapest times to stay.

prepare_booking

Books everything except the payment: holds the chosen offer (real prebook — the price is locked while the hold lasts), registers the guest details, and returns…

booking_statusread-only

Verify a completed booking: confirmation status, hotel confirmation code, stay and price.

Test results

Safe mode: only tools labeled read-only were run. How the test works

✕
Tools work with good inputs
1 failed
- ✕when_to_go: No answer within the time limit
- –prepare_booking: Not run: labeled as changing data
- and 5 more
fail
!
Every tool is described
1 warning
- !prepare_booking: Inputs with no description: guest_first_name, guest_last_name, guest_phone
note
!
Fast enough
1 warning
- !event_stays: Slowest tool: event_stays (3.9 s): users will notice the wait
- and 3 more
note
!
Follows MCP best practices (not scored yet)
1 tip (not scored)
- !3 tools answer with structured data but don't declare its shape (outputSchema): get_live_rates, demand_calendar, booking_status. If those answers change shape, nothing can catch it; with a schema, every answer is checked.
note
!
Resources and prompts work
1 warning (3 resources)
- !3 of 3 resources have no description, so people can't tell what they contain.
- and 2 more
note
✓
ConnectsConnected in 688 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 7 tools
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
pass
✓
Bad inputs give a clean error
All good
- ✓search_stays: Refused missing required input "city" with a clear error
- ✓search_stays: Refused wrong type for "city" with a clear error
- ✓get_live_rates: Refused missing required input "hotel_id" with a clear error
- ✓get_live_rates: Refused wrong type for "hotel_id" with a clear error
- ✓demand_calendar: Refused wrong type for "city" with a clear error
- ✓event_stays: Refused wrong type for "event" with a clear error
- ✓when_to_go: Refused wrong type for "hotel_id" with a clear error
- ✓booking_status: Refused missing required input "booking_id" with a clear error
- and 1 more
pass
✓
Tools work togetherevent_stays → when_to_go: when_to_go found what event_stays returned (hotel_id = "lp4f7bb")
pass
✓
No secrets leakedChecked 13 error messages: no secrets or internal details
pass

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://fostay.com/api/mcp

Show this score on GitHub

Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.

[![QAmcp score](https://qamcp.dev/s/com-fostay-hotels.svg)](https://qamcp.dev/s/com-fostay-hotels.html)

Score over time

5 Nov 202670

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use hotels, signed in with GitHub, one per person. Reviews never change the score.

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