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

The description says to 'set up a new unit' — a creation/mutation action — while annotations declare readOnlyHint=true and destructiveHint=false. A read-only tool setting up a new unit is a direct contradiction that could mislead the agent about side effects.

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?

Two short sentences, front-loaded with the action and followed by triggers; no filler. Minor cost is spent on the parenthetical gloss rather than on differentiating siblings.

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, no-output-schema tool the description is minimally sufficient, but it leaves 'unit' undefined, omits any relationship to create_unit, and is inconsistent with its own read-only annotation, so an agent lacks what it needs to invoke this confidently.

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?

The tool takes zero parameters, so the baseline is 4; there is nothing for the schema or description to disambiguate. The description cannot add parameter meaning because none exist.

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 states a general action ('set up a new unit') and glosses the resource with '(client, project...)', which helps, but 'unit' and 'Script' are non-standard terminology left undefined. It also fails to distinguish this from the sibling create_unit, so an agent cannot tell which creation path applies.

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 gives concrete triggers ('nuovo cliente', 'start project', 'track someone/something new'), which is useful when-to-use signal. However, it names no exclusions and no alternative tool (e.g., create_unit), so the boundary against siblings is left to inference.

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