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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is partly covered; the description adds the irreversibility framing ("Permanently") and a required user-confirmation step, which is real operational context. It does not describe any cascade effects (e.g., what happens to existing DM history) or error behavior, so it stops short of full disclosure.

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?

Three short sentences, each earning its place: what it does, the safer alternative, and the confirmation gate. The destructive nature is stated first, which is the correct ordering for a delete tool.

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 single-parameter delete with no output schema and annotations that already declare destructiveness, nothing essential is missing: permanence, the non-destructive alternative, and the confirmation requirement are all covered.

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 100% and the single parameter already carries a pointer to list_comment_automations as its source. The description adds no format, validation, or sourcing detail beyond the schema, so the baseline 3 applies.

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?

States a specific verb and resource ("Permanently delete a comment→DM automation") with the permanence qualifier front-loaded. It is clearly distinguishable from update_comment_automation, which the description itself names, so an agent can route correctly without opening a schema.

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?

Gives explicit when-not guidance ("To stop it temporarily, use update_comment_automation with isActive:false instead") naming the exact alternative and the parameter value to use. It also states a procedural prerequisite ("Confirm with the user before deleting"), leaving nothing to inference.

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