Create a moodboard

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

Annotations already indicate this is a mutating, non-read-only action. The description adds meaningful behavioral details: the board starts empty, cannot be used as a reference until it has at least one image, and later drives new work by name. No contradiction with annotations exists.

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 compact and well-structured: the action is stated first, the workflow follows, and the key constraint is saved for last. Every sentence contributes useful information with no redundancy.

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 simple one-parameter creation tool with annotations covering its mutating behavior, the description is complete. It explains the full lifecycle, the relationship to add_to_moodboard, and the non-obvious restriction about empty boards, which is exactly what an agent needs to proceed correctly.

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 100%, so the schema already documents the single title parameter with an example. The description does not add meaning beyond what the schema provides, so the baseline score of 3 is appropriate.

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 first sentence states exactly what the tool does: 'Create a new, empty moodboard on the account.' This is a specific verb and resource, and the word 'empty' adds an important distinction from later moodboard operations like add_to_moodboard or get_moodboard.

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 gives a concrete workflow: create a board, generate images, add them with add_to_moodboard, then reuse the board by name. This clearly conveys when in the overall process the tool should be invoked. It lacks explicit 'do not use when' conditions or comparison to list_moodboards/get_moodboard, so it is not a 5.

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