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

Annotations already declare a non-destructive, closed-world mutation, so the safety profile is covered. The description adds genuine behavioral value by disclosing the two possible outcomes (returning a queued place vs. relinquishing an in-progress turn), but says nothing about error behavior, whether the call is idempotent, or what identity is needed to leave.

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 twelve-word sentence with zero filler, and the primary outcome is front-loaded. It is arguably too terse for a mutation with two undocumented optional parameters, but there is no wasted prose to trim.

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 state-changing tool with no output schema, no annotations covering outcome semantics, and two parameters at 0% schema coverage, the description should say what a successful leave returns or confirms and what identity is required. The one-line description is not enough to call this confidently without trial and error.

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 0% and neither `session` nor `agent_token` is documented anywhere. With both parameters optional and unexplained, an agent cannot tell whether omitting them infers identity from context or fails silently — the description must compensate here and does not mention parameters at all.

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 action on a specific resource: relinquishing a position in the bench queue, and clarifies it also covers an already-started turn. The verb is colloquial ("give back the place") but the meaning is unambiguous against siblings queue_join and queue_status, which the name already separates.

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?

Usage is only implied by the verb — call it when you want out of the queue. There is no statement about what happens if the caller is not queued (error vs no-op), no mention of queue_join as the inverse path, and no prerequisites such as when a session must be open. Adequate but leaves the agent to infer.

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