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ZeroTian

Aseprite MCP Tools

by ZeroTian

rotate_layer

Rotate a specific layer in an Aseprite file by 90, 180, or 270 degrees clockwise. Specify the filename, layer name, and frame index.

Instructions

Rotate a layer's image 90, 180, or 270 degrees clockwise.

Args: filename: Aseprite file to modify layer_name: Layer name to rotate frame_index: Frame index starting at 1 angle: Rotation angle: 90, 180, or 270 (clockwise)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filenameYes
layer_nameYes
frame_indexYes
angleNo
Behavior2/5

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

No annotations provided; description does not disclose side effects (e.g., modifies file in-place), reversibility, or permission requirements. The simple verb 'rotate' lacks behavioral depth.

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?

One-line purpose followed by a clean Args list; every element is necessary and front-loaded. No redundancy.

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?

No output schema; description does not explain return values or confirm that the operation modifies the file. Adequate for a simple mutation but lacking confirmation of side effects.

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

Parameters4/5

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

Schema coverage is 0%, but the description provides context for all four parameters (e.g., filename as 'Aseprite file to modify', frame_index as 'starting at 1', angle options). This adds significant meaning beyond the schema types.

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 rotates a layer's image by 90, 180, or 270 degrees clockwise, specifying the exact action and resource, distinguishing it from similar tools like flip_layer.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives; no mention of prerequisites or when not to use it.

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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