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Get Rakuten Travel Hotel Chains

travel_get_hotel_chain_list
Read-onlyIdempotent

Retrieve all hotel chains registered in Rakuten Travel, including codes, to filter or group hotel search results by chain.

Instructions

List all Rakuten Travel hotel chains (Marriott, APA, Hilton, Toyoko Inn, etc.) with their codes. Useful for filtering or grouping search results by chain.

[JA] 楽天トラベルに登録されている全ホテルチェーン(マリオット、APA、ヒルトン、東横INN等)とコードを返します。

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint. The description adds that it returns a list of chains with codes, consistent with the annotations. No extra behavioral details beyond what annotations provide.

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?

Two clear sentences in English plus a Japanese translation. No superfluous words; front-loaded with the primary purpose.

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?

Given zero complexity (no parameters, no output schema), the description fully covers what the tool does and what it returns. The annotation set is rich enough that additional context is unnecessary.

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

Parameters5/5

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

No parameters exist, so schema coverage is 100%. The description effectively explains the output (list of hotel chains with codes), compensating for the lack of output schema, thus adding value beyond the input 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 explicitly states the tool lists all Rakuten Travel hotel chains with their codes, naming examples like Marriott, Hilton. It clearly distinguishes itself from sibling travel search tools by focusing on chain listing.

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

Usage Guidelines4/5

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

Suggests use for filtering or grouping search results by chain, implying it's a preliminary step before other travel searches. While not specifying when not to use it, the context of sibling tools makes its purpose clear.

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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