ipv6_addresses

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

No annotations are provided, so the description carries the full burden, and it does disclose a genuinely important edge case: an empty list is returned (never an error) when the ipv6 package is disabled, plus a pointer to the README. It also notes the reply carries fields beyond those listed. It omits auth requirements and pagination, so not a 5.

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?

Front-loaded with the verb+resource before the field enumeration and the edge-case note. The field list is slightly verbose but each item (address, interface, advertise, disabled, dynamic) earns its place by previewing the payload.

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?

An output schema exists, so return-value documentation is not strictly required, yet the description helpfully previews the fields anyway and covers the disabled-package edge case. For a single-param read tool this is nearly complete; only auth/permission expectations are 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 description coverage is 0%, so the description would need to compensate for the single `device_name` parameter, and it says nothing about it. The parameter name is self-evident and the tool is single-param, so the gap is minor rather than severe.

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 specific verb and resource ('List IPv6 addresses configured on a device'), names the underlying RouterOS path (`/ipv6/address`), and explicitly distinguishes itself from its IPv4 counterpart ('Mirrors `ip_addresses` for IPv6'). An agent can place this among the ipv6_* siblings without opening any schema.

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 'Mirrors `ip_addresses` for IPv6' line gives clear context for choosing this over the IPv4 sibling, and the resource is unambiguous relative to ipv6_routes/ipv6_neighbors. However there is no explicit when-not or alternative routing, so it stops short of a 5.

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