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

Annotations already establish read-only, idempotent, non-destructive behavior. The description adds important behavioral context beyond that: only printers with scheduled or in-progress jobs are included, absent means no outstanding maintenance, and an empty object means nothing is scheduled. This is valuable semantic disclosure.

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 compact and front-loaded with the most important purpose and cost signal. Every sentence contributes: purpose, return shape, missing-printer semantics, and follow-up alternatives. No wasted words.

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 zero-parameter, read-only tool with no output schema, the description fully covers what the agent needs: output structure, value meanings, absence/empty-object semantics, and how to get more detail. No important gap remains.

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?

There are zero parameters)Skip so the baseline is 4, and the description explicitly reinforces that it takes no parameters. There is no parameter ambiguity to resolve.

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 returns a fleet-wide maintenance status map keyed by printer id, with status and next_scheduled_date. It explicitly distinguishes itself from get_printer_maintenance_profile and list_maintenance_jobs, so an agent can select it correctly without opening siblings.

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?

It positions the tool as the 'cheapest fleet-wide maintenance check' and gives explicit follow-up alternatives for one-printer detail or job-level detail. This tells the agent when to use this tool versus the named alternatives.

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