import_image_as_layer

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions layer creation but does not disclose other important behaviors: how the image is placed (replacing, overlaying, positioning relative to x/y), whether existing layer content is affected, how frame_index influences the operation, or any potential error conditions (e.g., invalid image_path). The description is minimally transparent and leaves significant behavioral uncertainty.

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

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

The description is a single, efficient sentence with no wasted words. However, it is under-specified; the conciseness comes at the cost of missing critical details. It is not verbose, but it is also not appropriately informative. It earns a middle score for being compact yet lacking necessary elaboration.

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

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

For a tool with 6 parameters, no annotations, no output schema, and a large sibling set, the description is severely incomplete. It does not explain return values, side effects on the sprite/canvas, coordinate system semantics, frame handling, or interaction with other layers. An agent cannot call this tool correctly without additional information. The description is far from adequate for the tool's complexity.

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

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

Schema description coverage is 0%, so the description must compensate by explaining parameter meaning. It does not. It mentions 'named layer and frame' but does not map that to layer_name or frame_index, nor does it explain filename vs. image_path, the meaning of x/y coordinates, or the default behavior of frame_index. Agents have no idea what each parameter controls without opening the schema, and even then the schema has no descriptions.

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

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

The description states a clear verb ('import'), a specific resource ('an image'), and a precise target ('into a named layer and frame'). It also discloses the auto-creation behavior ('creating the layer when it does not exist'), which distinguishes it from other layer-related tools like add_layer or set_layer. This gives an agent a concrete understanding of what the tool does.

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

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

The description implies the tool is for placing an image into a specific layer, but it does not explicitly state when to use it over alternatives, nor does it mention when not to use it. It does not reference sibling tools like draw_pixels or add_layer, leaving the agent to infer the appropriate context. No exclusionary guidance is provided.

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