update_dns_record_tool

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

With no annotations available, the description carries full responsibility for behavioral disclosure. It fails to mention that updating is a mutating operation, potential irreversible overwrites, or any permission requirements. The single sentence provides no additional behavioral insight beyond the obvious.

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 at one sentence with no wasted words. However, it is under-specified for a tool with complex behavior, but conciseness is about efficiency, and this is efficient albeit minimal.

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?

Given the tool has 9 parameters, is a mutation operation, and has no annotations or output schema explanations, the description is severely incomplete. It does not explain what fields can be changed, the effect of partial updates, or any constraints. It is far from minimally viable for an agent to use correctly.

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 input schema already describes all 9 parameters with 100% coverage, so the baseline is 3. The description adds no parameter-specific information beyond what the schema provides, which is acceptable given the schema's completeness.

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 (update) and resource (existing DNS record), distinguishing it from create/delete operations. It is specific enough to understand the tool's core purpose, though it lacks detail on what can be updated.

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 is provided on when to use this tool versus alternatives. It does not mention prerequisites like needing zone_id and record_id, nor does it suggest retrieving them from list_dns_records_tool. It offers no context for usage.

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