add_dns_domain

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

Annotations already indicate that the operation is non-read-only and non-destructive. Beyond that, the description usefully discloses the explicit permission requirement (pdns/edit) and the fact that both a DNS zone and a domain-table entry are affected. It does not mention return values or idempotency, but that is not critical here.

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, front-loaded with the primary action, followed by the permission requirement. No filler, no repetition of schema content, and every clause earns its place.

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 simple two-parameter mutation with complete schema coverage and no output schema, the description provides the essential action and access constraint needed to call the tool correctly. The only gap is not explicitly disambiguating from add_dns_zone, but that is more of a usage-guidance issue than a completeness issue.

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%, with both name and confirm already documented in the input schema. The description adds no parameter-level meaning beyond the schema, so the baseline of 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?

Description states a specific compound action: 'Создать DNS-зону и добавить домен в таблицу доменов' and even names the underlying internal method (pdns/add_domain). This makes the resource and effect clear. It does not explicitly differentiate from the sibling add_dns_zone, so it misses the top score.

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 given on when to use this tool versus alternatives such as add_dns_zone or add_dns_subdomain. The only contextual note is the permission requirement 'Требует права pdns/edit', which is a prerequisite rather than a usage rule.

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