travel MCP server

None of its 20 tools are described as changing anything. For 20 the reading was uncertain, so no mark is shown.

• search_tripson 6 other servers

  “Find hotels, flights and flight-and-hotel packages on Vuelo for a destination, dates and number of travellers, within a budget.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes

  15 inputs, 4 required

  • destinationstringrequired“Town or city, with its country when the name is shared or could be ambiguous: "Lisbon", "Zurich, Switzerland", "Cambridge, UK".”
  • fromstringrequired“Check-in date, YYYY-MM-DD”
  • tostringrequired“Check-out or return date, YYYY-MM-DD.”
  • travellersintegerrequired“Number of travellers”
  • budgetnumber“Maximum total in pounds”
  • originstring“Where they fly from, to include live flights and packages: an airport code (LHR) or, when the traveller names a city, the city (London, or LON), which searches…”
  • destinationAirportstring“Arrival airport for the destination, for example LIS for Lisbon; for a city with several airports (London, Paris, New York, Milan, Rome, Tokyo, Stockholm) pass…”
  • onlystring“What the traveller asked for.”
  • refundableOnlyboolean“Only stays with a refundable rate, when the traveller asks for refundable or free cancellation.”
  • minStarsinteger“Minimum hotel star rating, when the traveller asks for one (for example 5 for "5-star").”
  • hotelstring“The hotel, when the traveller names one ("the Pulitzer", "The Savoy"): its name only, with the town in destination.”
  • cabinstring“Which cabin to price flights in, when the traveller asks for one ("business class", "premium economy", "first").”
  • passengersarray“Pass this whenever you know it: the results page and checkout then need nothing typed.”
  • mobilestring“The traveller's mobile number (any country; international format such as +1 415 555 2671 outside the UK), whenever you already know it from this conversation o…”
  • travellerobject“The person booking, whenever you know them from this conversation or about the user: full name as on their ID, email, date of birth (YYYY-MM-DD) and home postc…”
• get_hotel_availabilityon 2 other servers

  “Live rooms and prices at ONE hotel the traveller already has in mind, for their dates and number of guests, without searching the whole town.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes

  4 inputs, 4 required

  • propertystringrequired“The hotel: a Vuelo hotel link, an offerId from a Vuelo search, a Vuelo property_id (VHP_…) or a hotel id from a Vuelo search.”
  • fromstringrequired“Check-in date, YYYY-MM-DD”
  • tostringrequired“Check-out date, YYYY-MM-DD”
  • travellersintegerrequired“Number of adults”
• get_offeron 41 other servers

  “Details, terms, photos and the payment options for one Vuelo offer, repriced live.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes

  1 input, 1 required

  • offerIdstringrequired
• change_package_flight

  “For a flight-and-hotel package from search_trips: every other flight for the same route and dates, each priced as a package with the same stay, with what it costs each traveller more or less than the…”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes

  1 input, 1 required

  • offerIdstringrequired“The package offerId from search_trips”
• book_tripon 1 other server

  “Bookings are made under Vuelo's Booking Terms and Conditions (https://getvuelo.com/uk/legal/terms-of-booking-service/); the Vuelo card and pay page show them.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  14 inputs, 2 required

  • offerIdstringrequired
  • paymentOptionstringrequired“One of the options search_trips returned as eligible”
  • travellersarray“Each passenger, as on their passport, with their title and gender where you know them (airlines need both).”
  • travellersConfirmedboolean“Set true when the traveller has confirmed the passengers Vuelo filled in and named back to you.”
  • consumer_refstring“The vc_ reference Vuelo gave you after this traveller authorised you to book for them within limits.”
  • mobilestring“Mobile number to text the link to (any country; international format outside the UK).”
  • leadTravellerobject“The traveller booking: name, email, date of birth and home postcode, town and county, as far as you know them.”
  • deliverystring“How the confirmation reaches the traveller.”
  • conversationIdstring
  • from_cardboolean“Set only by the Vuelo card.”
  • hoststring“Which assistant this is, so the Vuelo page names it and matches its look.”
  • payerobject“Only when the traveller says someone else is paying (a friend, a partner, a parent): their name and mobile or email, as the traveller gives them.”
  • notify_urlstring“Your own https address.”
  • notify_tokenstring“A secret of yours.”
• get_booking_progress

  “Progress of the newest booking for an offer, or the newest booking of all, for the Vuelo widget.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

  1 input

  • offerIdstring
• change_payment_option

  “When the traveller wants to pay a different way (for example reserve now instead of paying in full) before they have confirmed.”

  Publisher declares: read-only no · destructive no · idempotent yes · open-world no

  2 inputs, 2 required

  • taskIdstringrequired
  • paymentOptionstringrequired
• update_travellers

  “Correct who is travelling on a booking the traveller has not paid for yet: a passenger's name or date of birth (names exactly as on the passport, dates YYYY-MM-DD).”

  Publisher declares: read-only no · destructive no · idempotent yes · open-world no

  3 inputs, 1 required

  • taskIdstringrequired“The taskId book_trip returned.”
  • leadTravellerobject“The booking traveller's email, date of birth and home postcode, town and county, to fill in their Vuelo account on the pay page.”
  • travellersarray
• resend_link

  “When the traveller says the secure link has not arrived, or asks for another: Vuelo texts it again, to the same number.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  1 input, 1 required

  • taskIdstringrequired
• send_to_payer

  “After a booking has started, when the traveller says someone else is paying (a friend, a partner, a parent, their company); if you know before booking, pass payer to book_trip instead.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  4 inputs, 2 required

  • taskIdstringrequired“The taskId book_trip returned.”
  • namestringrequired“The name of the person paying, as the traveller gave it.”
  • mobilestring“Their mobile, to text the link.”
  • emailstring“Their email, to email the link.”
• cancel_bookingon 51 other servers

  “Cancel a Vuelo booking, before or after the traveller confirms.”

  Publisher declares: read-only no · destructive yes · idempotent yes · open-world yes

  6 inputs

  • taskIdstring“The taskId book_trip returned, when the booking was made in this conversation.”
  • referencestring“Otherwise: the Vuelo booking reference (VU-...).”
  • emailstring“With reference: the email the traveller booked with.”
  • mobilestring“With reference, instead of email: the mobile on the booking.”
  • previewboolean“true: only say what cancelling would refund, changing nothing.”
  • codestring“For a paid booking: the six-digit code Vuelo texted the traveller, as they gave it to you.”
• contact_supporton 4 other servers

  “Send the traveller's request to Vuelo's support team, who will be in touch with them.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  6 inputs, 2 required

  • taskIdstring“The taskId book_trip returned, when the booking was made in this conversation.”
  • referencestring“The Vuelo booking reference (VU-...), when there is no taskId.”
  • emailstring“The email the traveller booked with: needed when there is no taskId, or when this tool asks for it.”
  • mobilestring“With reference, instead of email: the mobile on the booking.”
  • topicstringrequired“What the request is about.”
  • messagestringrequired“What the traveller wants, in their words.”

Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. “Publisher declares” lists the hints the server itself sends with the tool (MCP annotations: read-only, destructive, idempotent, open-world); they are the publisher's claims, not checked by us. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-30.

The registry checks an entry when it is published (each new version), and nothing re-checks it on a schedule. A difference below is about the listing, not a judgement of the publisher.