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

The description discloses important behaviors beyond the false annotations: a 32 KB size limit, redaction of secret-shaped fields, a prohibition on storing secrets/personal data, and the fact that no authentication is required despite an owner token. It does not detail the lease lifecycle consequences (e.g., whether the lease ends), but the provided behaviors are valuable.

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 and front-loads the core action in the first sentence. It includes a couple of redundant cautions ('Do not store secrets' repeats the schema warning and redaction note), but overall it is efficient and scannable.

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?

Given the schema covers all parameters and an output schema is present, the description adds the key constraints an agent needs: size limit, redaction, storage warnings, and owner token requirement. It could be more complete by explicitly positioning this against release_lease or stating that the lease is completed/ended, but the core is present.

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 schema covers all four parameters with detailed descriptions, so the baseline is 3. The description mentions the 32 KB limit and secret redaction, but those already appear in the result property's schema description, so it adds little new semantic value.

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 finishes owned work and saves a reusable JSON result, which is a specific action and resource. It implies differentiation from sibling lease tools (acquire/release/renew) but does not explicitly name alternatives, so it stops just short of a 5.

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 phrase 'Finish owned work' implies this tool is used at the end of a lease, and 'save a reusable JSON result' gives a reason to pick it over other lease operations. However, there is no explicit when-to-use or when-not-to-use guidance, nor any mention of alternatives like release_lease.

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