cal_today

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

No annotations are provided, so the description carries full responsibility. It states the basic function but does not disclose how 'today' is defined (e.g., timezone, day boundary), whether recurring events are handled, or any limitations on the number of events returned.

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 a single, concise sentence with no unnecessary words. Every word contributes to the purpose, making it highly efficient.

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 zero parameters and the presence of an output schema, the description is largely complete. It explains the tool's primary action and scope. However, it could slightly benefit from defining 'today' more precisely or mentioning if events are filtered by certain criteria.

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?

There are zero parameters, and the schema coverage is 100%. According to the scoring guidelines, zero parameters baseline is 4. The description does not need to add parameter information since none exist.

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 retrieves 'today's calendar events from Outlook.' The verb 'Get' is specific, and the resource 'today's calendar events' is precise. This distinguishes it from siblings like 'cal_list' (which likely has broader scope) and 'cal_next' (single next event).

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 explicit guidance on when to use this tool versus alternatives such as 'cal_list' or 'cal_next.' The description implies it is for today's events, but it does not state when not to use it or mention any prerequisites like timezone settings.

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