get_todays_events

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

No annotations are provided, so the description carries the full burden, and it discloses nothing beyond the content categories. It does not state that this is a read-only lookup, whether results are sorted, whether it reflects a timezone, or how the enumerated categories are returned. For a zero-parameter read tool the omission is tolerable but still a gap.

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?

One short sentence that front-loads the verb and scope and then lists the covered categories without padding. It is efficiently sized, though the scope qualifier could precede the category enumeration more explicitly.

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 an output schema present, the description needn't explain return values, and the zero-parameter surface means little call syntax is required. What remains missing is routing guidance relative to the sibling get_events_on_day, but the tool is otherwise complete for its low complexity.

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 takes zero parameters, so there is nothing for the description to disambiguate; the baseline for a parameterless tool applies. The description's category list is the only semantic content needed and it is present.

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 with the scope fixed to 'today', and enumerates the included event categories (birthdays, holidays, passive holidays, fishing tournaments, booksellers). It doesn't explicitly name the near-sibling get_events_on_day, but 'today' is a clear scope signal that separates it from the date-parameterized alternatives.

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 word 'today' implies the usage context, so an agent can infer this is the shortcut when no date argument is needed. However, it never states when to prefer this over get_events_on_day or get_birthdays_on_day, nor any exclusions, leaving the routing decision to inference.

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