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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered. The description adds scope boundaries ('We don't tell you what to rent or who to rent from') and signals a return payload, but with an output schema present it doesn't need to explain returns, so its added behavioral value is modest.

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?

Short and front-loaded, with the scope-limiting sentence doing real work by clarifying what the tool will not do. Slightly reportorial marketing phrasing, but no wasted sentences.

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-required-parameter informational tool with an output schema, the description is sufficient: it says what question it answers and that it returns an explanation plus next steps. An agent needs nothing further to select and invoke it.

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 100% and both parameters are documented in the schema itself; the description adds no meaning about metro or situation. Baseline of 3 is appropriate when the schema carries parameter semantics fully.

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 what the tool returns — an explanation of what TrueRent is and how to get started — with the marketing framing backed by a concrete deliverable ('Returns that, and how to start'). It is clearly distinct from siblings equipment_coordinator (coordination) and request_follow_up (follow-up), though the verb is more explanatory than action-oriented.

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?

Provides an explicit trigger: 'Use this when someone asks what TrueRent is.' That is a clear when-to-use condition and effectively routes against the sibling tools, though it does not name those alternatives or state when not to call it.

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