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

Annotations only flag destructiveHint/idempotentHint; the description goes well beyond them by detailing exactly what each action destroys versus retains (take plus playback removed, section and replacement draft kept; remove_section takes the whole cue), that edits are free and do not wait for regeneration, and that source files, accepted jobs and recovery history survive. This is the precise blast-radius information an agent needs before invoking a destructive tool.

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 front-loaded with the core purpose and per-action effects, then moves to retention guarantees and retry rules, with no filler sentences. It is dense to the point of being run-on in the middle clause about remove_take, which slightly hurts scannability but every sentence carries operational content.

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 destructive, nested-schema, six-parameter tool with an output schema, the description supplies everything an agent needs: prerequisite read, conflict handling, retention semantics, failure-tolerance policy, and a note that the result returns current selection and sectionUpdatedAt. Return-value detail is appropriately left to the output schema.

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 50% and the domain parameters (action, take_id, expected_updated_at, section_id) are undocumented in the schema. The description compensates by explaining what each action enum value does, when take_id is mandatory, and that expected_updated_at must be the exact value from a fresh read. It says nothing about the envelope parameters (work_id, request_key, read_skills, edit_variant_id), leaving some gaps.

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 names the resource precisely (saved narration, score or song takes in a film edit) and enumerates the three operations it performs: select_take, remove_take, remove_section. It does not, however, distinguish itself from plausible sibling tools such as native.select_film_saved_take, native.clean_film_take_audio, or native.remove_film_clip_sound, so an agent must infer which tool owns saved-take selection.

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?

It states the prerequisite ('Read the audio section once for its edit ID, section ID, exact updated_at and take IDs'), the per-action parameter requirement ('Supply take_id for select_take or remove_take'), an explicit prohibition ('Do not rewrite or copy the picture timeline to remove scores'), and an edge case ('Act on the creator's requested removal even when a replacement failed'). Retry guidance is also explicit: one refreshed audio read on conflict, no verification loop after a successful receipt.

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