transita_country_overviewGet summary data for a destination country: number of visa pathways, EU member status, score dimensions, drawbacks, top cities with rent ranges, and PR/citizenship timelines.
| Name | Required | Description | Default |
|---|---|---|---|
| country_code | Yes |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden. It indicates a read-only operation ('Get') and lists the return content, adding some transparency. However, it does not disclose potential error behavior, data source, rate limits, or limitations beyond the basic scope.
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 a single efficient sentence, front-loaded with the action, and includes a comprehensive list of what the tool returns without any wasteful or redundant wording.
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 simple one-parameter tool and absence of output schema, the description adequately communicates the key return categories (visa pathways, EU status, cities, PR timelines). It lacks detail on response format or edge cases, but is sufficient for a starting-point overview tool.
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 schema provides only a country_code string with no description (0% coverage). The description adds context by saying 'for a destination country', clarifying the parameter's role. However, it does not specify the expected format (e.g., ISO code) or constraints.
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 a specific verb ('Get') and resource ('summary data for a destination country'), and enumerates the content areas (visa pathways, EU status, score dimensions, etc.). This distinguishes it from the sibling visa-specific tools like transita_compare_visas or transita_visa_details.
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 implies usage for a high-level country overview but does not explicitly mention when to use this tool versus alternatives, nor does it provide exclusions or prerequisites. It is inferred from the sibling tool names but not stated.
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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Each tool targets a distinct step in the visa advisory workflow: nationality-based discovery, country overview, profile matching, side-by-side comparison, single-visa details, and live programme status. The overlap between compare and match is resolved by their descriptions—one compares selected pathways while the other scores a full profile against all pathways.
All tools share the transita_ prefix and use snake_case, but the suffix pattern is mixed. compare_visas, match_visas, and search_by_nationality are verb-led, while country_overview, programme_status, and visa_details are noun-phrase outputs. The consistent prefix helps, but the inconsistent verb/noun structure makes the API less predictable.
Six tools is well-scoped for a specialized visa advisory server. Each tool addresses a distinct user need from discovery to status checking, and none feels redundant or out of place.
The tool surface covers the full user journey: exploring destinations, matching eligibility, comparing visas, viewing details, and checking current intake status. There is no direct 'list all visas for a country' endpoint, but match_visas and search_by_nationality provide usable workarounds for discovery.