highlight_reel_tool

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

With no annotations provided, the description fully bears the burden of behavioral disclosure. It only states the basic operation without revealing potential side effects, authorization requirements, or limitations (e.g., file format constraints, processing time). This is insufficient for a tool that creates a new file.

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 extremely concise with two short sentences that are front-loaded with the core action. Every word is meaningful and there is no redundancy.

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?

Given that an output schema exists (as per context signals), the description is not required to explain return values. It adequately covers the basic purpose and scope, but lacks usage guidance and behavioral details. It is minimally viable but has clear gaps.

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 100%, so the baseline is 3. However, the description adds no extra meaning to the parameters beyond what the schema provides (e.g., no examples, constraints, or relationships between parameters). It could have clarified how 'theme' influences extraction or the role of 'target_duration'.

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 that the tool extracts highlights from multiple videos to create a highlight reel, and mentions support for cross-video theme aggregation. This is a specific verb-resource combination that distinguishes it from sibling tools like 'analyze_content_tool' (analysis) or 'smart_clip_tool' (single clip generation).

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?

The description provides no guidance on when to use this tool versus alternatives, nor any prerequisites or exclusions. Without such context, an AI agent cannot determine if this tool is appropriate for a given task among the sibling tools.

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