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

Annotations already declare destructiveHint=true, readOnlyHint=false, and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that: no note on irreversibility, whether drafts/scheduled sends referencing the template are affected, or whether confirmation is required.

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?

One short front-loaded sentence with zero padding, which is structurally clean. But its brevity comes from under-specification rather than efficiency, since no substantive information beyond the name is conveyed.

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 destructive, three-required-parameter mutation with no output schema and no parameter documentation, the description is too thin. An agent cannot determine scope, side effects, or failure modes from either the description or the schema.

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 0% across three required parameters (projectId, siteId, templateId). The parameter names are largely self-evident, but the description supplies no scoping semantics — e.g., that the template must belong to the given project/site or what happens on a mismatch.

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 states a specific verb and resource ('Delete an email template'), so the core action is identifiable. However, it says 'email template' rather than 'outreach template', and with siblings such as list_outreach_templates, create_outreach_template, and update_outreach_template, plus unrelated template-like resources (distribution pages/posts), it does nothing to anchor the tool to the outreach domain.

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?

There is no when-to-use guidance, no mention of prerequisites, and no reference to alternatives such as update_outreach_template (which is the safe action if the template is still needed). The agent must infer all routing from the tool name alone.

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