email_vacation_set

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

With no annotations, the description carries the full burden of behavioral disclosure. It only says 'Create/update' and repeats 'confirm: Required'; it does not explain what confirm does, whether an existing message is overwritten, what permissions are needed, or what the response looks like. This is a mutation tool whose side effects are largely undisclosed.

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 short, front-loaded with the main purpose, and uses a simple argument list. However, the terse one-line parameter notes, especially 'confirm: Required,' are not fully informative.

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?

For a tool with nested object parameters and no annotations, the description leaves important input semantics undefined: the shape of 'values', the meaning of 'confirm', and the behavior when a vacation message already exists. Even though an output schema exists, the missing input behavior makes this definition 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%, so the description must compensate for the bare input schema. It adds minor value ('Local part', 'Vacation body'), but 'values' is an arbitrary object and the description does not specify its required fields, and 'confirm: Required' misleadingly implies confirm is mandatory when the schema marks it optional with a default of false.

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 opening line 'Create/update a vacation message' names a specific action and resource, clearly distinguishing it from sibling email_vacation_list/get/delete operations. An agent can infer when to call this tool without opening the schema.

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 'Create/update' phrasing makes the intended use clear: it is the tool to set or modify a vacation message, as opposed to listing, retrieving, or deleting one. It does not explicitly name alternatives or exclusions, but the context is sufficient for routing.

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