generate_video

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

The description outlines the workflow: writes script, renders scenes, adds voiceover and music, returns a project URL. However, with no annotations provided, it lacks details on authentication, rate limits, or potential side effects, which would enhance transparency. The description is adequate but not thorough.

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 four sentences long, front-loaded with the primary action, and each sentence adds value. It efficiently conveys the tool's purpose, process, and usage guidance without 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 the tool's complexity (5 parameters, creative generation) and lack of output schema, the description adequately explains what the tool does and that it returns a project URL for preview and export. It could mention processing time or limitations, but overall it provides sufficient context for an agent.

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 100%, and the schema's parameter descriptions are already detailed (e.g., prompt includes a full creative brief). The main description does not add significant new information about parameters beyond what the schema provides, so a baseline score of 3 is appropriate.

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 tool generates short-form demo videos for specific platforms (Instagram Reel/TikTok/YouTube Shorts) from a text prompt. It distinctly differentiates from sibling tools like create_schedule, get_video_status, and list_capabilities by focusing on video creation.

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 explicitly says 'Use this when the user wants to create a promotional video, product demo, or UGC-style ad.' This provides clear context for when to use the tool, though it doesn't mention when not to use it or suggest alternatives.

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