calendars_update_event_notification

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

Annotations provide readOnlyHint: false, idempotentHint: true, and destructiveHint: false, indicating a non-destructive but mutable operation. The description adds nothing about behavior beyond the word 'Update', so it provides minimal additional transparency. Not contradictory, but still inadequate.

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 extremely short at two words, but this is under-specification rather than conciseness. It lacks essential content needed to understand the tool, so the brevity is not a positive attribute.

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 18 parameters, 2 required, no output schema, and a two-word description, the tool is severely under-documented. An agent would have no idea what fields are critical, what the update affects, or how to invoke the tool correctly. The description is far from complete.

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 89%, so the input schema already documents the 18 parameters in detail. The description adds no parameter semantics beyond what the schema provides, but since coverage is high, a baseline of 3 is appropriate.

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 'Update notification' is a tautology that restates the tool name without specifying what kind of notification, what it updates, or how it differs from siblings like calendars_create_event_notification or calendars_update_schedule. This gives an agent no actionable purpose information.

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 on when to use this tool versus alternatives. It doesn't mention that it updates an existing event notification, nor any prerequisites or conditions under which it should be chosen over other calendar notification tools.

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