Add DNS records

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

Annotations already note that this is mutating, non-idempotent, and non-destructive. The description adds useful behavioral context: the operation saves immediately, skips the validation step, and returns the saved zone. It goes beyond the annotations, though it does not elaborate on error behavior or idempotency consequences.

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 two sentences with no wasted words. Core behavior comes first, the immediate-save and no-validation caveat is included, and the sibling alternative is named succinctly. It is extremely efficient and front-loaded.

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 rich schema, output schema, and annotations, the description is largely sufficient: the agent knows what the tool does, when to avoid it, and what it returns. It could add failure-mode or multi-record behavior details, but the surrounding structured data covers most of the missing context.

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%, and the input schema already documents domainName and the body array with detailed field descriptions. The tool description does not add new parameter-level meaning beyond stating that records are appended, which is the baseline expectation at this coverage level.

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 opens with a specific verb and object: 'Appends records to a zone.' It clearly distinguishes itself from eurodns_dns_upsert_record by stating what it does not do (validate) and what it does do (save immediately, return saved zone). An agent can identify this tool's unique role among DNS-related siblings.

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?

The description explicitly directs agents to eurodns_dns_upsert_record for two specific conditions: when validation is desired, or when an existing record should be updated rather than duplicated. This is clear, actionable routing guidance with no ambiguity.

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