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ZeroTian

Aseprite MCP Tools

by ZeroTian

delete_frame

Remove a specific frame from an Aseprite animation by its index number.

Instructions

Delete a frame by index.

Args: filename: Aseprite file to modify frame_index: Frame index starting at 1

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filenameYes
frame_indexYes
Behavior1/5

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

No annotations are provided, and the description fails to disclose behavioral traits such as whether deletion shifts subsequent frame indices, irreversible nature, or any side effects. The description only says 'Delete a frame by index' without elaboration.

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

Conciseness4/5

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

The description is short and front-loaded with the core purpose. The arg list is clear. It could be slightly more structured (e.g., grouping), but it is efficient for an agent.

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

Completeness2/5

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

Given no output schema and no annotations, the description is incomplete. It lacks information about return values, error conditions, and the effect on the frame index order. Sibling tools are many, but the description does not help differentiate.

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 schema has 0% description coverage, so the description adds some value by explaining that frame_index starts at 1 and filename is an Aseprite file. However, the descriptions are minimal and do not clarify formats or constraints (e.g., full path vs relative name).

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

Purpose4/5

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

The description clearly states the action ('Delete') and the resource ('frame'), and specifies the parameters. However, it does not differentiate from sibling tools like clear_cel or copy_frame, but the core purpose is unambiguous.

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 (e.g., clear_cel, copy_frame). The description does not mention any prerequisites or contexts where deleting a frame is appropriate.

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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