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ZeroTian

Aseprite MCP Tools

by ZeroTian

set_frame_duration_all

Set all frame durations in an Aseprite file to a consistent millisecond value for uniform animation timing.

Instructions

Set the duration of all frames in milliseconds.

Args: filename: Name of the Aseprite file to modify duration_ms: Duration in milliseconds

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filenameYes
duration_msYes
Behavior2/5

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

Lacks details on side effects (e.g., modifies the file, overwrites existing durations). No annotations provided to compensate.

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?

Very concise with front-loaded purpose. The Args section is clean, but could be integrated into a single sentence.

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?

Too brief for a tool with many siblings. Lacks context on file persistence, error handling, or return value. No output schema.

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?

Adds basic meaning beyond schema titles (e.g., 'Name of the Aseprite file to modify'), but is minimal for 0% schema coverage.

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?

Clearly states it sets the duration of all frames in milliseconds, distinguishing it from sibling 'set_frame_duration' which targets a single frame.

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 vs alternatives like 'set_frame_duration'. No context on prerequisites or when not to use.

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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