labels_update_label

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

With no annotations, the description must disclose behavioral traits. It only says 'Update an existing label' without covering idempotency, permission requirements, error handling, or side effects. The agent is left unaware of what happens if the label doesn't exist or if fields are set to null.

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 very short (one sentence) but lacks critical information. Conciseness is not sacrificed for completeness; rather, it is under-informative. The first sentence does not front-load essential details like required parameters or usage context.

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 tool's complexity (5 parameters, 1 required, output schema exists but not described), the description is incomplete. It does not mention the output (updated label object), error cases, or how it differs from other label tools. Richer context is needed for effective use.

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 0% coverage (no parameter descriptions), and the description adds no parameter-level information. It does not explain that label_id is required or how the optional fields (name, icon, color, description) modify the label. The agent must infer all semantics solely from parameter names.

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 'Update an existing label', matching the tool name. It adds the WS endpoint, which is technical but still conveys the action. Among siblings like labels_create_label and labels_delete_label, the purpose is distinct. However, it could be more specific about what aspects of the label can be updated.

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 usage guidance is provided. There is no mention of when to use this tool versus alternatives like labels_create_label or labels_delete_label. The description does not include prerequisites, exclusions, or context for appropriate use.

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