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Aseprite MCP

Aseprite MCP

by MalloyTheDev
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

convert_background_to_layer

Converts the Background layer into a normal layer that supports transparency, enabling edits like adding alpha channels or moving content.

Instructions

Convert the Background layer back into a normal (transparent-capable) layer.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "filename": "<filename>"
    },
    "name": "convert_background_to_layer"
  }
}

Input Schema

NameRequiredDescriptionDefault
filenameYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv0.10.0
    • removedInput schema / properties / filename / title
      Removed value: -"Filename"
    • removedInput schema / title
      Removed value: -"convert_background_to_layerArguments"
  2. First observedv0.7.0

TDQS

B3.4/5.0
Behavior3/5

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

The annotations already declare readOnlyHint=false, so the agent knows this mutates state. The description adds useful semantic context by identifying that the Background layer is changed into a normal transparent-capable layer, but says nothing about reversibility, permissions, or side effects on existing content.

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?

A single front-loaded sentence with no redundant wording. The key action and result are stated immediately.

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?

For a simple mutation tool with readOnlyHint=false and no output schema, the core effect is covered. However, with 0% schema description coverage and no parameter explanation, the definition remains incomplete regarding which file the operation targets and what error or edge conditions exist.

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

Parameters2/5

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

Schema description coverage is 0% for the single required 'filename' parameter, and the description adds no explanation of it. The agent can infer it refers to a file, but the description does not compensate for the schema gap.

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?

States a specific verb ('Convert back') and resource ('the Background layer') with the exact resulting state ('normal (transparent-capable) layer'). This clearly distinguishes it from the inverse sibling convert_layer_to_background.

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 explicit when-to-use guidance, prerequisites, or alternatives are given. It implies the operation is needed when a transparent-capable layer is desired, but does not say when to choose this over other layer operations or what conditions must hold.

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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