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

Annotations already disclose destructiveHint=true and idempotentHint=true, so the mutation profile is known; the description adds the important nuance of what is actually destroyed (the waiting copy) and what is left alone (imported copies). It stops short of saying whether deletion is recoverable or requires confirmation, but otherwise tells the agent more than the annotations do.

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?

Four short sentences, front-loaded with the usage restriction before the action, then the exclusion. Every sentence prevents a distinct failure mode and none repeats the schema or title verbatim.

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 single-parameter, annotated mutation with an output schema, this covers the decision-relevant facts: when to call it, where the item_id comes from, and what it does and does not affect. It could still note whether the removal is reversible, which matters given destructiveHint=true.

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 coverage is 100% with a single well-documented item_id parameter, so the schema already carries the semantics. The description's 'Pass its item_id' adds only a light reinforcement of provenance rather than new syntax or format detail, which is the expected baseline when the schema does the work.

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?

States a specific verb (delete/cancel) and resource (a script in the blablabla inbox) plus the exact scope: waiting copies not yet imported. It explicitly distinguishes itself from send_to_blablabla and from the in-app deletion path, so an agent can separate it from every sibling.

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?

Gives a hard precondition ('only when the user explicitly asks') and a state condition ('sent with send_to_blablabla and have not imported yet'), plus an explicit when-not: imported scripts are handled elsewhere and are not touched by this tool.

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