update_track

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

Annotations already establish that this is a non-read-only, non-destructive mutation, so the description does not need to restate safety. It adds useful field-level behavior (what properties can change and the audio volume range), but it omits important mutation semantics: whether omitted/null fields mean 'leave unchanged', whether updates are partial, and whether project/sequence resolution is required.

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?

It is a single front-loaded sentence that enumerates the core operations without filler. Every clause corresponds to a real capability, and there is no repetition of annotation or schema text.

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 10-parameter mutation tool with zero schema description coverage, the description is too thin: it leaves identifier formats, context parameters, null/no-op semantics, and several update flags unexplained. The output schema means return values need not be described, but the input-side gaps remain substantial.

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%, so the description must compensate for 10 parameters. It explains the key editable fields and the volume range, and it distinguishes video blend mode from audio volume, but it does not explain the track identifier (integer vs string), project, sequence, blend_enabled, null defaults, or allowed blend_mode values.

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 clear verb and resource: update a track, with specific mutable properties (name, enabled/disabled, lock/unlock, blend mode, volume). It is distinguishable from siblings like add_track and update_track_item by operating on a track itself rather than track items, though it does not explicitly name or contrast those siblings.

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 by the listed operations, but there is no explicit guidance on when to use this versus add_track/delete_track/update_track_item, nor any prerequisites about project/sequence context. The video/audio split gives some conditionality but not enough to reach a clear when-to-use statement.

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