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

The description adds important behavior beyond the annotations: the link is short-lived and should be used immediately. It does not explain why readOnlyHint is false despite the retrieval-style operation, nor does it disclose permissions or whether repeated calls create new links.

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 tight sentences front-load the purpose and then the required action. There is no redundant restatement of the tool name or title.

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 key operational fact, link expiration, and the tool has an output schema plus annotations covering safety. It could be slightly more complete by explicitly routing to get_audio_job for valid output stems, but nothing critical is missing.

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?

With 50% schema description coverage, the output parameter is documented in the schema while jobId is not. The description contributes 'completed audio job' as a constraint on jobId and 'one output' as the meaning of output, but it adds no format or selection guidance beyond the schema.

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: it returns a link to one output of a completed audio job. It is clear enough to distinguish from create_audio_job and generic job inspection, though it does not explicitly name sibling tools like get_audio_job or download_voice_conversion_output.

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 'completed audio job' implies the prerequisite that the job must already be finished, and 'Download it or give it to the user straight away' gives a usage action. However, it does not explicitly say when to use this versus get_audio_job for listing outputs or download_voice_conversion_output for conversion outputs.

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