create_vfx_texture

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

With no annotations, the description carries the full burden. It discloses key behaviors: baking a vertical flipbook when frames>1, starting the animation player, defaulting to additive/emissive render mode and double-sided rendering. It doesn't cover all edge cases but provides sufficient behavioral context.

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, dense paragraph that efficiently conveys purpose, behavior, and usage. It is front-loaded with the main function and avoids unnecessary verbosity, though a more structured breakdown could improve readability slightly.

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 14 parameters and no output schema, the description covers the core functionality: texture generation, flipbook animation, default render settings, and application to planes. It references a guide for further details, making it fairly complete for an AI agent to understand usage.

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 86%, so the baseline is 3. The description adds overall context (e.g., flipbook, render modes) but does not elaborate on individual parameters beyond what the schema already provides. It does not detract, but also does not significantly enhance parameter understanding.

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 a pixelated VFX texture with specific visual characteristics (hot core, cool edges, quantized color bands, jagged edges). It gives concrete examples like pixel flames/energy/projectiles, distinguishing it from sibling tools that create generic textures or other elements.

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 specifies when to use it (for VFX textures on planes with optional flipbook animation) and provides usage context: apply to add_plane planes, animate with bones, and refer to a guide for more details. It lacks explicit when-not-to-use instructions but offers clear context.

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