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

Annotations only cover readOnlyHint/openWorldHint, and the description adds real behavioral context beyond that: an API token can read any job in its organization, including human-started web-app jobs. It also describes what speaker-separation output contains. It stops short of return-shape or error behavior, but the scope disclosure is genuinely additive.

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?

Three tight sentences, front-loaded with the core action before the sibling routing. Every clause carries actionable content; nothing is padding.

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?

With no output schema, the description does explain that the return is status plus output and details the speaker-separation payload, plus where to get file downloads. It could say more about generic output/status values, but it is adequate for a single-param read tool.

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% for the single jobId param, and the description only says 'by its id', which largely restates the schema's property name and type. No format, origin, or validity detail is added to help the agent supply or derive the id.

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 and resource ('Fetch the status and output of a job by its id'), which cleanly separates it from list_jobs and cancel_job. It further anchors itself by naming the sibling tools it is not (update_speaker_labels, get_file_download_url, get_job_result_asset_url).

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 explicit routing conditions: rename speakers via update_speaker_labels after reading speaker-separation output, and use get_file_download_url or get_job_result_asset_url when a downloadable file is needed. The agent can pick among four siblings without opening another schema.

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