pencil2d_create_spritesheet

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

No annotations are provided, so the description must carry behavioral disclosure. It notes the output is a single spritesheet image with grid metadata, but omits whether an existing output file is overwritten, what permissions are needed, whether the project is modified, and what the tool returns.

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?

A single front-loaded sentence with no filler. It states the action, source, and output immediately.

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?

The high schema coverage covers parameter meaning, and the description identifies the output artifact. However, with no annotations and no output schema, it leaves out behavioral details such as overwrite semantics and return information that would help an agent invoke it safely.

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 coverage is 100% and all four parameters have descriptions, including defaults for columns and layer_name. The description adds no parameter detail beyond the schema, so the baseline of 3 applies.

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 uses a specific verb ('Pack') and resource ('animation frames from a Pencil2D project') and states the output ('single spritesheet image with grid metadata'), distinguishing it from frame extraction or general export. It does not explicitly name the sibling alternatives it differs from, so it falls short of a 5.

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?

No when-to-use or when-not-to-use guidance is provided, and no alternative sibling is named. The purpose implies spritesheet creation, but an agent must infer when to choose this over pencil2d_extract_frames or pencil2d_export.

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