update_a_label

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

No annotations and no description of side effects, permissions, or what happens during an update. The tool is a mutation, but no disclosure of behavior beyond the name.

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?

Single vague sentence that fails to provide any useful information. It is underspecified, not concise in a helpful sense.

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 zero parameters, no output schema, and no annotations, the description is entirely incomplete. The agent cannot determine how to use this tool 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?

Input schema is empty, yet the tool likely requires parameters (e.g., label ID, new properties). The description does not compensate for the missing schema coverage, providing no guidance on how to invoke the tool.

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?

Description merely restates the name ('Update a label') without specifying what attributes can be updated. With sibling tools like create, get, and delete, the general purpose is inferred but lacks detail.

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 like contact_add_labels or conversation_add_labels, which also involve labels but in different contexts. Missing prerequisites or when not to use.

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