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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so safety is covered. The description adds value by enumerating the returned data in the absence of an output schema, but says nothing about auth, rate limits, or error behavior, so it goes only modestly 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?

A single front-loaded sentence that opens with the core purpose and follows with a compact field list. No filler, no repetition of the name or annotations.

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?

For a one-parameter read-only lookup with annotations covering the safety profile and no output schema, listing the returned fields is a meaningful completeness contribution. The remaining gap is routing: nothing helps the agent choose this over get_availability, which sounds like it covers overlapping data.

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 parameter is fully documented ('Event ID from search_events'), so the schema carries the load. The description adds no syntax, format, or constraint detail for event_id, making the baseline 3 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?

States a specific verb and resource ('Full details for one event') and enumerates the returned fields (venue, date, ticket count, price range, sections). It is clear about what it does, but it never distinguishes itself from siblings like get_availability, whose scope ('sections available') it partially overlaps.

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 only implied: 'one event' signals a single-record lookup as opposed to search_events' multi-record listing, and the schema hints the id comes from search_events. There is no explicit when-to-use versus get_availability or get_deals, and no exclusions stated.

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