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

Annotations already indicate this is a mutating, non-idempotent, non-destructive operation. The description adds valuable context: it releases the lease before TTL ends, requires the secret owner token, and explicitly states 'No authentication is required.' This goes beyond the annotations by clarifying the authorization model and the effect on other agents. It doesn't mention what happens to the lease's data or whether the release is permanent, but the core behavior is well disclosed.

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?

Three sentences, each earning its place: the action and purpose, the usage condition, and the required token plus auth note. The most important information is front-loaded. No fluff or repetition of schema details.

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 mutating lease operation with a clear schema and output schema, the description covers the essential context: when to use it, what it does, and the key prerequisite. It could mention what the response contains or what happens to the lease after release, but the output schema likely covers that. The description is complete enough for an agent to select and invoke the tool correctly.

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%, so the schema already documents all three parameters thoroughly. The description adds the context that owner_token is the 'secret owner token' and that it is required, but this is also in the schema. The description does not add new parameter-level meaning beyond what the schema provides, so a baseline 3 is appropriate.

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 action ('Give up a lease before its TTL ends'), the resource ('a lease'), and the purpose ('so another agent can acquire the work'). It also distinguishes the tool from siblings like renew_lease and complete_lease by specifying the use case of abandoning work without a reusable result.

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 description explicitly says when to use this tool ('when abandoning work without a reusable result') and implies when not to use it (when there is a reusable result, presumably complete_lease). It also mentions the required secret owner token, which is a key prerequisite. This is strong guidance for an agent deciding between release_lease and related lease tools.

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