create_calendar

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

No annotations are provided, so the description carries the full burden of behavioral disclosure, but it only restates the creation operation already implied by the tool name. It does not mention persistence side effects, campaign association, permissions, validation, or return behavior.

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 one-sentence description is short and readable, but the brevity is under-specification for a tool with two required parameters and a nested data object. It lacks enough substance to count as appropriately sized for the tool's complexity.

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 no output schema, no annotations, and 0% schema description coverage, this one-line description is the agent's only guidance, and it explains nothing about required inputs, behavior, or success criteria. For a create operation with required campaignId and data, this is materially incomplete.

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%, yet the description names neither campaignId nor data. An agent gets no clue that campaignId likely identifies the campaign to add the calendar to, or what shape the nested data object should take.

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 a clear action ('Create') and a clear resource ('a new calendar'), so an agent can tell this tool creates a calendar as opposed to listing, updating, or deleting one. However, it mostly paraphrases the tool name and does not distinguish it from other create_* siblings such as create_timeline or create_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?

There is no guidance about when to use this tool versus list_calendars, update_calendar, delete_calendar, or related create tools. No prerequisites are mentioned, such as requiring an existing campaignId. The intended invocation context is left entirely to inference.

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