venue_ops_period_summary

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds behavioral context by specifying that the group_total is present only when venue_id is omitted, and that the response format can be markdown or json. This goes beyond the annotations without contradicting them.

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 well-structured with clear sections (Args, Returns, JSON schema, Examples) and is appropriately sized. Every sentence adds value, and the examples are concise and illustrative. No wasted words.

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?

Given the tool's moderate complexity (4 parameters, one nested object, output schema provided), the description is complete. It covers input semantics, output structure, usage examples, and exclusions. The output schema is present, so the description doesn't need to explain return values in detail, but it still provides a high-level summary.

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 0%, so the description must compensate. It does by listing each parameter (start, end, venue_id, response_format) with brief semantics and the JSON schema for the return value. While it doesn't detail every field in the aggregated figures, it provides enough for an agent to understand the inputs and expected output structure.

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 clearly states the tool aggregates a date range for one venue or the whole group, with specific verbs ('Total up') and resource ('date range, for one venue or for the whole group'). It distinguishes from sibling tools by explicitly noting when not to use it (single day, use venue_ops_get_day).

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?

The description provides explicit usage examples ('Use when: What did the group do in July?') and a clear exclusion ('Don't use when: You want a single day (use venue_ops_get_day)'). This directly guides the agent on when to select this tool versus alternatives.

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