unlabel_message

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

With no annotations provided, the description must fully disclose behavioral traits. The description only states that labels are removed, but does not clarify if the action is reversible, whether it triggers filters, or if it requires specific permissions. For a mutation tool, such behavioral context is critical and missing.

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 sentence with no unnecessary words, which is good for conciseness. However, it lacks essential detail, making it under-specified. It earns its place but is too brief to be fully effective.

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 complexity of 4 parameters, no output schema, and no annotations, the description is severely incomplete. It does not explain parameter purposes, return values, or authentication needs. More context is required for an AI agent to correctly select and invoke this tool.

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 coverage is 0%, meaning the description must compensate by explaining parameters. The description only mentions 'one or more labels' but does not describe the required 'message_id' parameter, nor the optional 'account' and 'password'. The parameter semantics are entirely absent from the description.

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 action ('remove') and the target ('labels from a message'). It implicitly distinguishes from siblings like 'label_message' and 'unlabel_thread' by specifying 'message', but does not explicitly mention that it operates on a single message rather than a thread. The verb-resource combination is specific.

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 'unlabel_thread' or 'label_message'. There is no mention of prerequisites, typical use cases, or situations where this tool should be avoided. The description is purely informative about the basic function.

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