delete_template

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

Without annotations, the description bears full responsibility. It discloses the restriction on built-in templates but does not note reversibility, authentication needs, or other side effects. The existence of an output schema partially mitigates the need for return value details.

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 extremely concise, delivering essential information in two short sentences without any superfluous words.

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 with one parameter, the description covers the core purpose and key constraint. However, it lacks parameter explanation, which is necessary for correct invocation. The output schema covers return values, so that gap is acceptable.

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 description provides no additional meaning for the 'template_id' parameter beyond what the schema offers (integer). With 0% schema description coverage, the description should explain what identifies the template (e.g., the ID from get_template or list_templates).

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') and the resource ('custom email template'), and explicitly distinguishes from built-in templates, which helps the agent understand the scope.

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 includes the important constraint 'Cannot delete Mailchimp's built-in templates,' guiding the agent on when not to use it. However, it does not mention alternative tools or contexts where deletion is appropriate.

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