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ferryhopper_trip_details

[ferryhopper] Get full details for a single sailing leg, looked up by the id of one of the options returned by search_ferry_trips (legs[].options[].id). Returns the trip's departure/arrival time, ports, and operating company, plus the vessel's technical specs, onboard amenities, and photos. Use this to answer questions about a vessel such as: does it have wifi / a restaurant / a snack bar / an open deck / a lift or elevator / wheelchair or disabled access / a designated smoking area? Is it pet-friendly, or does it allow pets on board? Does it have cabins, or a garage / vehicle deck for cars and motorbikes? How many passengers or vehicles does it carry (capacity)? How long is the vessel (length in meters)? What is its IMO number or MMSI (maritime identification numbers used for registry/tracking lookups)? Is this vessel accessible, family-friendly, or suitable for passengers who need mobility assistance? What does the vessel look like (photos)? If no detailed specs exist for the vessel in the source system, vessel.hasDetails is returned as false and every spec/amenity field is null — this means the data is unavailable, not that the vessel lacks that amenity. Also returns the trip's bookable accommodation tiers (seat/cabin classes) with their price and a photo of that accommodation, when available. Throws if the tripId is malformed or the trip is no longer bookable (e.g. it has already departed, was cancelled, or sold out) — re-run search_ferry_trips to get a fresh tripId in that case.

Input Schema

NameRequiredDescriptionDefault
tripIdYesThe trip identifier for a single sailing leg, as returned in legs[].options[].id by search_ferry_trips. Do not fabricate this value.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / tripId / description
      Previous value: -"The trip identifier for a single sailing leg, as returned in tripsById/bookingSolutions by search_trips_v2. Do not fabricate this value."New value: +"The trip identifier for a single sailing leg, as returned in legs[].options[].id by search_ferry_trips. Do not fabricate this value."
  2. Added

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full behavioral burden and does so: it enumerates the returned fields, discloses the hasDetails=false sentinel semantics (null means data unavailable, not amenity absent), and documents error conditions (malformed tripId, departed/cancelled/sold-out trips) plus recovery.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loads the core purpose before elaborating, and every section maps to an agent need. The long enumerated list of example questions ('wifi / restaurant / snack bar / ...') is somewhat padded, but it is illustrative rather than redundant.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema exists, so the description must describe returns, and it thoroughly covers trip fields, vessel specs, amenities, photos, accommodation tiers with pricing, the null-data sentinel, and failure modes. Nothing an agent needs to call it correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single parameter's schema description already states the origin and the 'Do not fabricate' warning. The description restates the source (search_ferry_trips output) but adds little grammar or format beyond what the schema provides, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Get full details for a single sailing leg') and pins the lookup key to its sibling's output ('legs[].options[].id returned by search_ferry_trips'). An agent can distinguish this detail-lookup from the search tool without opening either schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Specifies the condition that selects this tool (answering questions about a specific vessel/accommodation from a known tripId) and where to obtain the id. It also names the remediation path when it fails ('re-run search_ferry_trips to get a fresh tripId'), which is explicit when/when-not guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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