Who the user is: profile, the passports/nationalities they hold (which decide every visa answer), and their recorded passport documents. Worth reading before planning anything.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and idempotentHint=true, so the description doesn't need to repeat that. It adds value by explaining what data is returned (profile, passports, documents) and why it matters ('which decide every visa answer'). This goes beyond the annotations by providing domain-specific context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences, front-loaded with the core purpose, and every word earns its place. It's concise, informative, and well-structured.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, no output schema), the description is complete. It explains what the tool returns and why it's important. The only minor gap is that it doesn't explicitly state the return format, but that's not necessary for a zero-parameter tool with no output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, and the schema coverage is 100% (empty properties). The description doesn't need to explain parameters, but it does explain the output semantics (what the user gets). Since there are no parameters, a baseline of 4 is appropriate, and the description adds value by clarifying the content of the response.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: to retrieve the user's profile, passports/nationalities, and passport documents. It uses a specific verb ('get') and resource ('me'), and distinguishes itself from siblings like get_country_info and get_visa_status by focusing on the user's identity data.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for when to use this tool: 'Worth reading before planning anything.' It implies this is a foundational tool to call before other actions, but it doesn't explicitly mention alternatives or when not to use it. However, given the tool's unique purpose, this is sufficient.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Each tool targets a distinct resource and action (e.g., create_flight vs create_activity vs create_stay), and descriptions clarify overlaps like stay vs accommodation. The only potential confusion (create_activity covers travel legs) is explicitly explained, so misselection is unlikely.
All tools follow a consistent verb_noun pattern using standard verbs: create, delete, get, list, search, set, update, add, remove, leave. Nouns are consistently singular and descriptive (passport, journey, stay, flight, accommodation). No mixed conventions or vague verbs.
With 36 tools, the count is higher than typical, but the server covers a wide domain: journeys, stays, activities, flights, accommodations, visas, documents, preferences, and sharing. Each entity has CRUD operations plus search and status, so the count is justified, though bordering on heavy.
The tool surface is remarkably complete: full CRUD for every entity (journeys, stays, activities, flights, accommodations, visas), user profile access (get_me), search utilities, sharing controls (join links, member management), and preferences. No obvious dead ends or missing lifecycle steps; even edge cases like deleting bookings before stays are handled.