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create_character_animation

Animate a saved pixel art character by ID using template, v3, or pro modes. Supports custom actions and frame interpolation for flexible animations.

Instructions

Animate a SAVED character by ID with flexible modes. mode='template' uses a skeleton-based template_animation_id; mode='v3' interpolates frames from a custom action_description (4-16 frames); mode='pro' is the pro animator. More flexible than animate_character, which is template-only. Requires a character_id.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
modeNoAnimation mode: 'template' (skeleton from template_animation_id), 'v3' (custom action), 'pro'
seedNoSeed for deterministic generation (default 0)
detailNoDetail level
outlineNoOutline style
shadingNoShading style
isometricNoGenerate in isometric view (default false)
directionsNoDirections to animate (south, north, east, west, etc.), or omit for default
color_imageNoColor palette reference image
descriptionNoCharacter description (uses character's original if omitted)
frame_countNoNumber of frames (4-16, must be even, default 8). v3 mode only
character_idYesID of existing character to animate
force_colorsNoForce use of colors from color_image (default false)
animation_nameNoName for this animation (defaults to action_description)
enhance_promptNoAuto-expand the description into a richer prompt before generating (default false)
action_descriptionNoAction description (required for custom v3/pro animations, e.g. 'walking', 'jumping')
text_guidance_scaleNoHow closely to follow the text (1.0-20.0, default 8)
template_animation_idNoAnimation template ID (required for template mode, e.g. 'walking', 'attack')
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It explains modes and inputs but does not disclose side effects (e.g., whether it modifies the character, creates a new animation, or returns a job ID). More transparency on expected behavior and output is needed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise with 4 sentences, front-loading the purpose and modes. No unnecessary words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 17 parameters, nested objects, and no output schema, the description is adequate but lacks details on return values, prerequisites (character must be saved), and default behaviors for parameters like frame_count and seed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% coverage, so the description adds marginal value. It provides context for mode and the difference between template and v3, but other parameters are not elaborated beyond schema definitions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool animates a saved character by ID, with flexible modes. It distinguishes itself from the sibling tool animate_character, which is template-only.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly explains when to use each mode (template, v3, pro) and notes that animate_character is an alternative. It also states the requirement for a character_id.

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

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