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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered elsewhere and the description's contribution is the payload. It does disclose return contents in the absence of an output schema, which is genuinely useful. Missing are failure behavior for an unknown id and whether the video/audio status answer differs in shape from the image detail answer.

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 action, with the id-type caveat following rather than leading. Information density is high with no filler. The mid-sentence 'ETA hint' phrasing and the packed em-dash list make it slightly denser to scan than necessary.

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 one-parameter read tool with no output schema and full annotation coverage, the definition is sufficient to call it correctly: it names id sources and enumerates the returned fields. The remaining gap is behavioral rather than structural — no guidance on bad ids or on which sibling status tool to use instead.

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 a single parameter at 100% schema description coverage, the schema already explains taskId and its origins. The description reinforces this by naming audio 'generation_id or request_id' and pointing at generate_video, but adds only marginal precision over the schema text. Baseline 3 applies.

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 opening clause gives a specific verb and resource ('Get the full detail of one of your generations by its id'), and the follow-on sentences clarify that the same tool also serves video/audio ids. What it does is unambiguous. It stops short of 5 because it never draws a line between itself and sibling status tools (get_video_status, get_audio_status) that appear to overlap.

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?

Usage is implied rather than stated: id provenance ('from generate_video', 'from generate_image or list_generations') hints at when to reach for it after a generation. There is no explicit when-not or named alternative, so an agent facing a video task id must guess between this tool and get_video_status.

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