retrieve_label

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

Annotations include readOnlyHint=true and openWorldHint=true. The description describes a read operation (retrieve) which aligns with readOnlyHint. It adds that the return is a Label object, but does not discuss potential errors, permissions, or side effects. The description adds minimal behavioral context beyond the annotation.

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 extremely concise: one sentence for purpose, followed by a structured argument and return section. Every part is necessary, and the key information is front-loaded. No unnecessary words.

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?

Given the simplicity of the tool (retrieve by ID) and the existence of an output schema (indicated by context), the description covers the essential functional aspects. It does not mention error handling or not-found cases, but for a straightforward retrieval, this level is adequate.

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?

The input schema has no descriptions (0% coverage), but the description provides docstrings: 'project_id: UUID of the project' and 'label_id: UUID of the label', adding semantic meaning (the expected type UUID) beyond the schema's plain string type. This compensates for the schema's lack of 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 clearly states 'Retrieve a label by ID' specifying the verb and resource. It also lists the required parameters (project_id, label_id). However, it does not explicitly differentiate from sibling tools like list_labels or other retrieve tools, but the purpose is clear enough.

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 on when to use this tool versus alternatives. The description does not mention that this is for retrieving a single label by ID, while list_labels would be used for listing all labels. No explicit conditions or exclusions are provided.

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