animate

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

With no annotations, the description carries the burden of behavioral disclosure. It does disclose the output format (multiple PNG frames or spritesheet) and the nature of the action (pixel motion animation). However, it omits other behavioral traits such as whether it requires an existing sprite/character, potential side effects, or limitations. This is a moderate level of transparency.

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 two sentences, front-loaded with the primary action, and contains no filler. Every word contributes to understanding the tool's purpose and output. This is exemplary conciseness.

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?

The description covers the essential context: what the tool does and what it returns. Since there is no output schema, explaining the return format is important and handled well. However, for a tool with 5 parameters and no annotations, it could further explain the id/seed relationship or default behaviors, but the schema fills those 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 description coverage is 100%, and each parameter has a clear description (e.g., 'Sprite ID to animate (use this OR seed)' and the enum for motion). The tool description adds no parameter-specific information beyond the schema, so the baseline 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 animates a sprite or character and specifies the output format (multiple PNG frames or spritesheet). The verb 'animate' and resource 'sprite or character' are specific, and the output mention adds clarity. However, it does not explicitly differentiate from sibling tool 'animate_scene', though 'sprite or character' implies a distinction.

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 explicit guidance on when to use this tool versus alternatives. It doesn't mention 'animate_scene' or other siblings, nor does it state any prerequisites or exclusions. The context is only implied by 'Animate a sprite or character', which is too vague for clear usage direction.

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