update_label

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

With no annotations provided, the description carries the behavioral disclosure burden. It does add the meaningful authorization requirement (owner or admin), which is beyond the schema. However, it does not clarify whether the update is partial or full replacement, whether unspecified fields are cleared, or what the response contains. That leaves important behavioral ambiguity for an agent.

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 efficient sentence with no filler. Each element earns its place: the action, the existing-label scope, and the role requirement. It is front-loaded and immediately understandable.

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 tool is simple and the schema is complete, so an agent can construct a basic valid request. However, with no output schema and no mention of behavior when only some fields are provided, the description is not fully self-sufficient for an agent deciding whether to send a partial update. It is adequate but leaves meaningful gaps.

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 all three parameters (name, color, label_id). The description adds no additional parameter-level semantics such as optionality, partial-update behavior, or validation rules. The baseline of 3 is appropriate because the schema carries the load.

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 the verb and resource: 'Update an existing label.' It differentiates from create_label and delete_label via 'existing,' and the resource 'label' distinguishes it from update_task, update_folder, and update_status. However, it stays close to the tool name and does not elaborate on 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?

The role requirement ('requires owner or admin role') is a useful explicit precondition, and 'existing label' implies this is not for creating or deleting. But there is no explicit guidance about when to choose this over create_label, delete_label, or list_labels, nor any comparison with sibling update_* tools. Usage context is mostly implied rather than stated.

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