get_lan_settings

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is fully covered without the description. The only added content is a field list, which duplicates what the output schema presumably returns, and it discloses nothing about scope, freshness, or whether values are read live from the router.

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?

Four words plus conjunctions is admirably short and every term is meaningful, but it is a fragment rather than a sentence, with no lead verb or structure an agent can anchor on. Brevity here shades into under-specification rather than genuine economy.

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 zero-parameter read-only getter with an output schema and both safety annotations present, the description is only just sufficient: the name plus field list conveys what comes back. It omits any statement of relationship to set_lan_settings, which is the main gap an agent would care about when deciding between reading and writing LAN configuration.

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?

The tool takes zero parameters, so there is no parameter semantics for the description to carry; baseline 4 applies. The listed fields are output content, not inputs, so no compensation was needed here.

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 is a bare noun phrase ("LAN address, mask, DHCP range and lease time") with no verb, so the agent must infer 'retrieve' from the tool name alone. It does enumerate the specific settings covered, which distinguishes it from get_firewall_settings, get_dns_settings, and other getters, but it never states the resource as an action or notes that set_lan_settings is its counterpart.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as set_lan_settings (the write counterpart) or read_router_page. The read-only nature can be inferred from the 'get_' prefix, but nothing in the text routes the agent between this and the other settings getters.

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