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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds the useful detail that results carry nameserver detection, DNSSEC and logging status, but says nothing about pagination behaviour, result ordering, or what happens for accounts with many zones.

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?

A single tight sentence front-loads the verb and resource, followed by the endpoint reference. Both earn their place, though the 'bunny.net: GET /dnszone' tag is mildly redundant for an agent that only needs the tool name.

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 read-only paginated list tool with no output schema, the description covers what is listed and what fields matter. It is nearly complete; only pagination semantics and the list-vs-get distinction are left unstated.

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 coverage is 100% and all three parameters (page, search, per_page) are documented in the schema with defaults and ranges. The description adds no parameter 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?

States a clear verb+resource ('List the DNS zones hosted on bunny.net') and enumerates the interesting fields returned (nameserver detection, DNSSEC, logging status). It implicitly distinguishes itself from the singular bunny_get_dns_zone and from bunny_list_dns_records, though it never names those siblings 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?

The listing scope implies when to use it, and 'hosted on bunny.net' hints at account-wide listing, but there is no explicit when-to-use guidance, no mention of alternatives like bunny_get_dns_zone for a single zone, and no prerequisites stated.

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