Create a label

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

Annotations provide no readOnlyHint or destructiveHint, so the description must disclose behavioral traits. It only states 'Create' but omits side effects, idempotency, validation behavior, or permissions, leaving the agent uninformed.

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, clear sentence with no wasted words. It is appropriately sized for the tool's simplicity, though it could incorporate a hint about output.

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?

With no output schema and a nested object parameter, the description should at least indicate the expected return value (e.g., the created label). The current description relies heavily on the schema, which defers some field details to external docs, making it incomplete for a standalone tool definition.

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% and the schema itself details the 'fields' parameter, including required and optional attributes. The description adds minimal value by stating 'Pass its attributes in fields', which only reaffirms the schema.

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 the specific verb 'Create' and identifies the resource as 'a new label', clearly distinguishing it from sibling create tools for other entities like artists or publishers.

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 guidance is provided on when to use this tool versus alternatives such as update_label or other create tools. Prerequisites or when-not-to-use are absent.

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