calendar_watch_settings

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. It does not disclose that the tool creates a persistent watch channel, that it sends notifications to the provided URL, or any authorization or rate-limit considerations. The description is too minimal to cover behavioral traits.

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 that effectively communicates the tool's purpose with no unnecessary words. It is front-loaded and earns its place.

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 3 parameters, the description is too short to provide complete context. It does not explain that this creates a watch channel for the entire user's settings, that only one watch may be active, or that the channelId must be unique. The description fails to convey important operational details.

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%, so each parameter has a description in the input schema. The tool description adds no additional meaning beyond the schema. Baseline 3 is appropriate as the schema already documents the parameters adequately.

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 verb 'Watch for changes' and the resource 'Google Calendar user settings', with the addition of 'push notifications' to clarify the mechanism. This distinguishes it from sibling tools like calendar_watch_events (which watches events) and calendar_stop_channel (which stops watching).

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 implies the tool is used to receive push notifications for settings changes, but it does not explicitly provide guidance on when to use this tool versus alternatives (e.g., calendar_watch_events, calendar_list_settings). No prerequisites or exclusions are mentioned.

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