lease_renew

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

With no annotations, the description carries the full behavioral burden. It does disclose one useful trait - renewal preserves the existing handle rather than issuing a new one - but says nothing about expiry behaviour, error conditions if the deadline already lapsed, or whether any session/auth context is required.

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?

A single short sentence with the effect front-loaded and no filler. It is efficient, though the 'handle' jargon costs a little clarity.

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 simple, parameterless tool with no output schema, a one-liner is close to sufficient, but with no annotations the description should at least clarify what lease is being operated on and what renewal returns or invalidates. It is minimally adequate rather than complete.

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 there is no parameter meaning for the description to add; the baseline for a 0-param tool applies. The one relevant implicit detail (which lease is renewed) is left unanswered, but no schema semantics are missing.

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 an action (extending a deadline) on a resource it calls a 'reservation', but the tool is named lease_renew and the term 'handle' is never defined. An agent can roughly infer the effect, yet the lease/reservation/handle terminology shift leaves the actual target somewhat vague and it names no sibling (e.g. lease_profile, lease_fleet) to disambiguate.

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 conditions, and no mention of alternatives such as lease_profile or lease_fleet. The agent must guess the calling context entirely from the name.

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