suggest_domains

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so safety is covered structurally; the description only adds that this is a GET endpoint returning suggestions. It says nothing about whether results are cached, whether suggestions carry pricing/premium flags, or what a suggestion object contains.

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 verb and resource, with the endpoint path appended compactly. No filler, though the bracketed route adds little for an agent that already has 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?

With five well-documented params, full annotation coverage, and no output schema, the description is close to sufficient but leaves the return shape underspecified — 'suggestions' could mean bare labels, FQDNs, or objects with price/availability, and the premium flag's effect on results is unexplained.

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%, so every parameter including tlds, limit, premium and x-trace-id is already documented in the schema. The description only restates the query/TLD-set idea, adding no semantics (e.g. how premium interacts with the result set) beyond structured fields — baseline 3.

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 pairs a specific verb and resource ('Suggest domains') with the underlying endpoint and states the scope ('across a TLD set'). An agent can tell it generates name ideas rather than checking a single name, but it never names the near-miss sibling validate_domain_availability to draw the boundary 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?

Usage is only implied by the verb 'suggest' — the description never says when to reach for this versus validate_domain_availability or order_domain. No prerequisites, no exclusions, and no guidance on whether suggestions are guaranteed available.

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