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

The annotations already declare a safe read, so the description's value-add is the payload disclosure and the explicit note that the git deploy-trigger URL is hidden — a non-obvious truncation an agent would otherwise assume was present. It does not cover auth requirements or failure behavior (e.g. unknown id), keeping it short of 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 core action and the return-shape summary, then the endpoint, with no filler sentences. The field enumeration is long but earns its place as the substitute for a missing output schema.

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 no output schema, the description carries the full burden of describing the return value, and it does so field by field while flagging the one field that is omitted. For a single-record read tool with one required parameter, nothing an agent needs in order to call it correctly is missing.

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%, and the single site_id parameter is already documented with its provenance in the schema, so the baseline is 3. The description adds no format or constraint detail beyond what the schema states.

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 — fetch one site by id — and immediately scopes it as the single-record counterpart to the list tool by enumerating the full settings payload. An agent can distinguish it from spinupwp_list_sites or spinupwp_get_server without opening the 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?

Usage is implied (call this when you need the detail record for a known site id) but the description never states when to use it versus spinupwp_list_sites or the narrower list_site_domains/list_site_path_redirects siblings. No prerequisites or exclusions are given; the only routing hint, the id source, lives in the schema, not the description.

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