Sync Calendar Items

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

Annotations already indicate readOnlyHint=false, destructiveHint=false, and idempotentHint=false. The description adds that only supplied fields are changed and returns the modified object, which is consistent but adds minimal extra value beyond annotations.

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 three sentences long, front-loading the action and purpose. It is efficient but has slight redundancy between the first and third sentences regarding updating records.

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?

No output schema is provided, and the description does not explain the structure of the 'updates' array or the format of the returned object. For a batch sync operation, this lack of detail on input format and response is a significant gap.

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 coverage is 100% and both parameters are described in the schema. The description merely restates that project_id and updates are required, adding no further semantic meaning or format details.

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 creates or updates a batch of Calendar Items, using the verb 'sync' and specifying 'Create or update a batch'. It distinguishes from sibling tools like create_calendar_item (singular) and list_calendar_items by emphasizing batch operation.

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 explicitly says 'Use this to update an existing Schedule (Legacy) records' and lists required parameters, providing clear context for when to invoke the tool. However, it does not explicitly state when to use alternatives like create_calendar_item or update_calendar_item for single operations.

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