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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered structurally. The description adds only 'current state', which hints at a point-in-time snapshot but provides no additional behavioral context (e.g. whether state changes over time, staleness, or error behavior for unknown lease ids).

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?

One short sentence with no padding or waste, and the key noun is front-loaded. However, the brevity reflects under-specification rather than tight editing, so it does not reach the top of the scale.

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 single-parameter read with a full safety annotation profile, this is minimally adequate. With no output schema, the description's brief mention of 'current state' is the only hint at what is returned, and it is too thin to fully carry that burden, but nothing critical is misleading.

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% for the single lease_id parameter, though the schema's own description ('Lease id.') is itself thin. Per the rubric, full schema coverage establishes a baseline of 3, and the description adds no format or sourcing detail beyond it.

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 identifies the resource (a lease) and indicates it returns current state, but it is a noun phrase that closely echoes the title 'Get a lease' rather than stating a specific verb+resource. It does nothing to distinguish this read tool from the many sibling lease operations (activate_lease, cancel_lease, dispute_lease, reclaim_lease, etc.).

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 when-to-use guidance, no prerequisites, and no mention of alternatives despite a crowded sibling set of lease tools. The agent must infer that this is the read path for lease state.

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