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

No annotations are provided, so the description must carry the behavioral burden. It discloses the key delayed-visibility behavior and the return shape. It does not mention potential edge cases or side effects, but the core mutation and timing semantics are transparent enough.

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 sentences, front-loaded with the core behavior, then use cases, then return note. Every sentence earns its place and there is no 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 description covers the core behavior, when to use it, and the return value, which is good for a queue mutation tool. However, with no output schema and low parameter documentation, the missing definitions of required slug and name leave an important gap for correct invocation.

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 only 20%: only owner_key has a schema description. The description adds meaning for value ('JSON value') and visible_after_seconds ('elapsed'), but leaves the required slug and name undefined in both the schema and the description, so an agent cannot confidently infer what those fields identify.

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 verb and resource: 'Push a JSON value onto a queue' with a distinctive delayed-visibility behavior. It explicitly distinguishes this from queue_push by saying the item is 'invisible to pop/pop-lease until visible_after_seconds have elapsed' and notes it returns the same shape as queue_push.

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 explicit use cases: 'Use this for retries, backoff, or scheduled work.' This makes the intended context clear, though it does not explicitly say when not to use it or name a direct alternative beyond referencing queue_push.

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