crossfade_videos

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It conveys only the core crossfade action but omits important details such as whether the output is a new video, how durations are handled, whether audio is affected, or if transitions require matching video properties.

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 a single focused sentence with no wordiness and the core action is front-loaded. It is concise, though it sacrifices useful detail for brevity.

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 simple tool with three parameters this is minimal but usable; however, the absence of annotations, output schema, and parameter explanations means the agent must rely on inference for behavior, return value, and transition semantics. Important context is missing.

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, but it does not explain any parameters. While video1 and video2 are relatively self-explanatory, transition_duration has no units or semantic context beyond its default value.

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 clearly states the operation as 'crossfade from one video into another,' naming the verb and the resource. It is specific enough to identify what the tool does, though it does not differentiate it from similar tools like merge_videos or fade_video.

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?

No guidance is given about when to use this tool versus alternatives such as merge_videos or fade_video. There is no mention of prerequisites, order of operations, or whether the user should also call export_video afterward.

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