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

Annotations already declare readOnlyHint=true and openWorldHint=false, and the description adds useful context: USD pricing, remaining spots, refund policy, a 20-session cap, and listing_only sessions being booked externally via registration_url. It does not cover error handling or response shape, but it adds meaningful behavior beyond the annotations.

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?

Two sentences, front-loaded with the core purpose and the important listing_only caveat. There is no wasted text.

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 no output schema, the description must convey return content, and it does list bookability, pricing, remaining spots, refund policy, and the external-booking caveat. It lacks response structure and error details, but it is adequate for a one-parameter read 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?

Schema description coverage is 100%, and the single sess_ids parameter is fully documented in the schema, including the 1-20 range and source tools. The description only restates the 20-session cap, so the baseline of 3 is appropriate.

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 uses a specific verb and resource: checking live bookability, pricing, remaining spots, and refund policy for sessions. It is clear what the tool does, but it does not explicitly differentiate itself from siblings like get_booking_policies or get_camp_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?

It implies usage for checking live availability and pricing and notes the listing_only external-booking case, but it gives no explicit when-to-use guidance versus get_booking_policies or create_booking_handoff, and no exclusions.

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