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

With only readOnlyHint=false provided, the description adds meaningful behavioral context: released work becomes available to another agent, attempts remain counted, and release is not a way to bypass retry limits. This is valuable beyond the annotation, though it does not cover permissions, reversibility, or rate-limit behavior in detail.

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?

Two short sentences, front-loaded with the primary action and immediately followed by the critical retry-limit warning. Every sentence earns its place with no repetition or filler.

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?

The tool has an output schema and full parameter coverage, so the description need not explain return values. It provides the key behavioral caution about retry counting, making it nearly complete, though it could explicitly route users away from complete/fail when release is intended.

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 item_id and the optional reason field are documented in the schema itself. The description adds no additional parameter meaning or formatting guidance, so the baseline of 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 states a specific verb and resource: 'Release your currently leased work.' It adds the effect 'so another agent may claim it,' which clearly distinguishes this tool from siblings such as agent.inbox.complete or agent.inbox.fail without requiring schema inspection.

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?

It gives a clear usage context for currently leased work and explicitly warns against looping releases to evade the retry limit. It stops short of naming alternative sibling tools like complete or fail, so it lacks explicit alternative routing but still provides strong contextual guidance.

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