panelica_subdomains_get_v1_subdomains_id

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

Annotations already carry readOnlyHint, idempotentHint, and destructiveHint=false, so the description needs to add context beyond them. It adds the required scope and HTTP method, which are useful, but it does not describe response contents, 404 behavior, or any other operational details. For a simple read-only GET, the added value is modest.

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?

The description is compact and structured, with clear metadata lines and no filler. Minor redundancy exists because 'Get subdomain' repeats the annotation title and 'Read-only' echoes the readOnlyHint, but overall it is appropriately short and scannable.

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 one-parameter, read-only GET, the description combined with annotations supplies the method, path, required scope, resource identity, and safety profile needed to invoke the tool. No output schema exists, so the description could have provided return-value context, but this is not critical for selecting or calling the tool. The main gap is not distinguishing this from subdomain-listing siblings.

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%: the single `id` parameter is already documented as a path parameter. The description's endpoint line reinforces that the ID lives in the path, but it adds no new format, type, or domain-specific meaning. The baseline of 3 applies because the schema already covers the parameter adequately.

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 states a specific action ('Get subdomain') and includes the HTTP endpoint and category, making it clear this fetches a single subdomain resource by ID. However, it does not explicitly differentiate itself from the sibling list operation panelica_domains_get_v1_domains_id_subdomains, so it stops short of a 5.

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 description implies usage through 'Get subdomain' and the GET path, and it provides a prerequisite via 'Required scopes: domains:read' and 'Read-only'. It does not give explicit when-to-use vs. when-not-to-use guidance, nor does it mention alternatives such as listing subdomains via the domain endpoint.

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