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

Beyond the readOnlyHint and openWorldHint annotations, the description discloses result count and ordering, the exact returned fields, default stay dates when omitted, currency behavior, and the per-call x402 payment model with failures not charged. This gives the agent substantial behavioral and cost context before invocation.

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 front-loaded with the tool's purpose and remains dense with useful output and pricing details. The long enumeration of return fields is somewhat heavy, but it is purposeful and not padded.

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?

With annotations, a complete input schema, and an output schema, the definition gives enough context to call the tool correctly. It covers return fields, optional dates and defaults, currency handling, and payment behavior, so no critical context is missing.

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?

Schema description coverage is 100%, so the parameter meanings are already documented. The description adds useful context about optional stay dates and default dates, but it does not add much semantic detail for place or limit beyond the schema.

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 states a specific resource and scope: Google Travel hotels and vacation rentals for a place, with returned fields and ordering. It is clear what the tool does, though it does not explicitly distinguish itself from nearby siblings such as travel_google_hotels_price or travel_booking_com.

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?

Usage is implied by 'for a place' and the optional stay dates, which tells the agent this is a place-based lodging search. However, there is no explicit when-to-use guidance, no when-not-to-use guidance, and no named alternative for hotel price or booking searches.

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