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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states 'Delete', which implies mutation, but does not mention that the action is likely irreversible, whether confirmation is required, or how errors are handled. This lack of detail is a significant gap for a destructive operation.

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, concise sentence with no redundant words. It front-loads the action verb and is appropriately sized for a tool with one parameter and no output schema. Every word earns its place.

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?

For a simple delete operation, the description is minimal but not fully complete. It does not mention return values, error behavior, or postconditions. Given the tool's low complexity, this is acceptable but leaves gaps an agent might need to handle, especially regarding destructiveness and failure modes.

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 schema description coverage is 0%, so the description must compensate by clarifying the parameter. It merely says 'by id', which restates the watch_id parameter name from the schema without adding format, source, or validation details. The singleton parameter is self-explanatory in name, but the description provides no added meaning.

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 (Delete), the resource (watch), and the identifier (by id). It is specific and unambiguous, distinguishing itself from siblings like create_watch or watch_status. However, it does not elaborate on what a 'watch' is or whether the deletion is permanent, which could add clarity but is not essential for the basic purpose.

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 description provides no guidance on when to use this tool versus alternatives such as cancel_limit_order or destroy_rental. It does not mention prerequisites, permissions, or conditions under which deletion is appropriate. Usage is only implied by the verb 'Delete', leaving an agent to infer the decision logic.

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