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set_active_layer

Define which layer editing tools apply to, ensuring edits target the correct layer in a pixel art document.

Instructions

Set the default target layer for editing tools.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
layerYesLayer id or name
doc_idYesDocument id
Behavior2/5

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

With no annotations, the description must disclose behavioral traits. It only states the basic purpose, omitting details like failure modes (e.g., invalid layer/document), side effects, or prerequisites. This leaves significant gaps for an agent.

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?

Single sentence of 8 words, no redundancy. It is efficient, though could marginally expand to include a hint about what constitutes an editing tool without becoming overly long.

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 lacks contextual details about expected behavior, error states, or usage conditions. It feels incomplete for a tool with two required parameters.

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?

Schema coverage is 100% with descriptions for both parameters. The description does not add extra meaning beyond the schema, which meets the baseline but does not compensate for any gaps.

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 action (set) and the resource (default target layer for editing tools). It distinguishes this tool from sibling tools like add_layer, remove_layer, set_layer_visibility, and set_active_frame.

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

Usage Guidelines3/5

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

The description implies usage before editing operations, but provides no explicit guidance on when to use versus alternatives, nor exclusion criteria. The context is clear but not fully elaborated.

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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