today_overview

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

No annotations are provided, and the description does not mention side effects, read-only nature, or error conditions. It is unclear whether this tool modifies data or just reads it.

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 brief and to the point, listing four key data elements without unnecessary elaboration. It is well-structured for a quick overview.

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 there is no output schema, the description partially conveys what the tool returns (age, counts, medication adherence, active alerts), but 'counts' is vague and the structure (single object vs. list) is not specified. This leaves significant gaps for an agent.

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?

The tool has zero parameters, so the empty schema is fully covered. The description does not add parameter-specific information, but that is acceptable given there are no parameters to explain.

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 it provides a 'snapshot' of today's data but lacks an explicit verb (e.g., 'retrieves' or 'lists'). It mentions specific data elements (age, counts, medication adherence, active alerts) but the action is ambiguous, making it unclear whether this is a read operation or something else.

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?

No guidance is given on when to use this tool versus alternatives like medication_report or routine_report. The description does not specify scenarios or contexts where this snapshot is preferred.

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