Manage DNS Settings

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

Annotations provide idempotentHint=true and destructiveHint=true. The description adds context by explaining idempotency ('returns no_change if nothing differs') and listing what settings are updated. However, it doesn't elaborate on authorization needs, side effects, or the destructive nature beyond the annotation.

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 sentences, no wasted words. First sentence clearly states purpose and scope; second adds valuable idempotency behavior. Highly concise.

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 8 parameters (all documented in schema), annotations, and no output schema, the description covers purpose and idempotency but lacks usage guidelines and behavioral details (e.g., confirmation token requirement, destructive action). Adequate but not comprehensive.

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%, so baseline is 3. The description summarizes key parameters (upstream servers, cache size, cache TTL, allow-remote-requests) but does not add meaning beyond the schema. No additional parameter semantics provided.

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 verb ('Update'), the resource ('DNS resolver settings'), and lists specific settings (upstream servers, cache size, cache TTL, allow-remote-requests). It distinguishes from siblings like 'get_dns_settings' by being a write operation, though not explicitly.

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 vs alternatives. Does not mention when not to use, prerequisites, or context for choosing this tool over related tools like 'manage_dns_entry' or 'get_dns_settings'.

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