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get_esim_catalog

Search active international travel eSIM data plans by filtering with country codes or keywords to find suitable options.

Instructions

Queries active international travel eSIM data plans. Optionally filter by country code (e.g. JP, US, FR) or search query.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
countryYesDestination name, country code, or query keywords to refine results (e.g. JP, Japan, Japan 100MB, Europe 10GB, USA 30 Days).
Behavior2/5

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

No annotations are provided, so the description bears full responsibility for behavioral disclosure. It only states the basic function, omitting details like response format, pagination, or data freshness.

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

Conciseness5/5

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

The description is a single, concise sentence. It is front-loaded with the primary action and resource, with no unnecessary words.

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

Completeness3/5

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

Given a single parameter and no output schema, the description is adequate for basic use but does not describe the returned data structure or any additional behavior. It could be more complete.

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 description coverage is 100%, and the description reinforces the parameter by giving examples (JP, US, FR) and mentioning search queries. This adds marginal value beyond the schema.

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?

The description clearly states the tool queries active international travel eSIM data plans with optional filtering by country code or search query. It effectively distinguishes from sibling tools like purchase_esim_with_wallet or get_topup_packages.

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

Usage Guidelines3/5

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 (querying eSIM plans) but does not explicitly mention when not to use or suggest alternatives. The agent can infer usage from the description.

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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