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

The annotations already declare destructiveHint=true and readOnlyHint=false, so the agent knows this is a destructive mutation. The description adds that this is an explicit abandonment of a failed upload generation, but it does not explain what state is removed, whether the action is reversible, or how idempotency affects behavior.

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?

The description is a single front-loaded sentence with no redundant wording. Every part contributes to identifying the operation.

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?

An output schema exists, so return values do not need description coverage. However, for a destructive tool with four undocumented parameters and a required idempotency key, the description should provide more operational context, especially around parameter meaning and safe 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 0%, and the description does not explain any of the four parameters. It does not clarify what file_hash identifies, what upload_attempt means, or why idempotency_key is required, leaving the schema as the only source of parameter names and types.

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 gives a specific verb ('abandon') and resource ('failed creative upload generation'), making the operation clear. It does not explicitly name sibling tools such as creatives_confirm_upload or creatives_request_upload, but the failure condition distinguishes it reasonably well.

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 phrase 'one failed creative upload generation' implies the usage context: cleaning up an unsuccessful upload. However, the description does not state when to use this instead of confirm/request upload tools, nor does it mention exclusions or prerequisites.

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