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

Annotations already declare destructiveHint=true, idempotentHint=false, and readOnlyHint=false, so the safety profile is covered. The description does add genuinely non-obvious context — that deletion is Sendocado-local and the provider account retains the domain — but it stops short of saying what happens to senders or campaigns attached to the domain, or whether calls are blocked while in use.

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?

Two short sentences with zero filler; the action is front-loaded and the clarification about provider-side retention follows it naturally. Nothing is redundant or padded.

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, non-idempotent tool with no output schema, the definition covers the key semantic nuance (local-only removal) but omits the ID's provenance, side effects on dependent senders, and any confirmation or irreversibility notes. Adequate, but there are real gaps an agent would want filled.

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 has one required parameter with 0% description coverage, so the description carries the burden of explaining sending_domain_id. It does not say how to obtain the ID (e.g., from list_sending_domains or get_sending_domain) or what format it takes, leaving the single input essentially undocumented.

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 ('Remove') and resource ('a sending domain') scoped to Sendocado, which cleanly separates it from siblings like delete_sender, delete_project, or delete_template. It does not explicitly name an alternative or contrast tool, but the resource noun is unambiguous.

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 guidance on when to call this versus get_sending_domain, list_sending_domains, or create_sending_domain, and no stated preconditions such as verifying the domain is no longer used by senders. A caller must infer the workflow entirely from the name.

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