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

Annotations already declare readOnlyHint=false and destructiveHint=true, so the safety profile is covered. The description still adds real value beyond that: it stresses the removal is permanent and live-affecting, names the underlying API call, and states the 204/no-body response, which the annotations do not convey.

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, front-loaded with the operation and then the danger warning, then API/response detail. Every sentence earns its place with no redundancy.

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 two-parameter destructive tool with full schema coverage and no output schema, the definition is nearly complete, even specifying the 204 no-body response. It omits edge behavior such as what happens on an unknown record id or missing permissions, so it falls short of a 5.

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 100%: the schema itself documents both 'zone' (zone name, e.g. example.com) and 'record' (numeric record id). The description adds nothing to parameter meaning, so the baseline of 3 applies rather than a higher score.

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 (Delete) and resource (DNS record from a zone), which cleanly distinguishes it from siblings like dnsimple_get_zone_record, dnsimple_update_zone_record, and dnsimple_list_zone_records. An agent can identify the operation without opening the 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?

No guidance on when to use this versus alternatives (e.g., get_zone_record to verify the record id first, or update_zone_record to modify rather than remove). The warning implies caution but does not state conditions, prerequisites, or exclusions for invocation.

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