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

Adds substantial context beyond the annotations: no payment is charged, no accuracy guarantee for uploaded files, a job_id is returned for polling, and authentication can come from a trial access token. The one opaque sentence about 'Owner legacy calls' queueing a 'fixed synthetic benchmark' is unexplained and slightly muddies otherwise clear 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?

Dense and front-loaded with the required-input rule and the two kinds before the return/polling and idempotency details. Nearly every sentence carries information, but the unexplained 'Owner legacy calls ... synthetic benchmark' line costs a point.

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 correctly covers what comes back (job_id, transcript) and how to continue (poll get_compute_job), plus billing and auth expectations. It leaves the legacy benchmark path and any failure/partial-result behavior undefined.

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 already 100%, so the baseline is 3; the description earns above that by giving conditional meaning the schema only states flatly ('Beta users must supply their uploaded asset_id') and by explaining kind in terms of outcome (transcript vs transcript plus WER gate). idempotency_key semantics are restated and elaborated usefully.

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 concrete action (submit a job that produces a transcript) and disambiguates its two modes: compute_job returns a transcript while delegated_task adds a WER gate. It is clearly an audio-transcription submitter rather than a chat/image one, though the sibling relationship is carried by the title rather than the prose.

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 real selection guidance: beta users must supply asset_id, compute_job vs delegated_task is chosen by whether a quality gate is needed, and results are retrieved via get_compute_job. It also states retry policy (same idempotency_key on retries, new key only for a new job). No explicit when-not-to-use or comparison to submit_chat_job/submit_image_job, so not a 5.

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