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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered structurally. The description adds nothing beyond that — no note on what is returned, whether a missing id errors, or whether pagination/expansion applies — leaving the annotation-provided behavior as the only signal.

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 first sentence is duplicated word-for-word, which is pure waste, and the remaining content is a machine-generated operation ID plus a cross-reference. There is no front-loaded statement of value beyond the path string.

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?

There is no output schema and no parameter documentation, so the description should explain the identifier format and the shape of a site record, but it does neither. For a nested-object, 0%-coverage schema, the definition is not sufficient on its own; the agent must chain into describe_operation to use it correctly.

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% across two parameters (a free-form query object and a required params.id), so the description carries the full burden and does not meet it. It never mentions that id is the site identifier or what the query object accepts, only deferring to describe_operation.

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 only the raw REST path 'GET /api/sites/:id' repeated verbatim twice, which merely restates the name and title. It conveys the HTTP verb and resource but gives no plain-language statement of what a 'site' fetch returns or how it differs from siblings like get_sites_1c66d899f55d56514bed9495 (list), get_sites_by_id_documents_... or find_sites.

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 only routing guidance is a pointer to describe_operation for native request schemas, which is a schema-lookup hint rather than a when-to-use rule. Nothing says when to call this single-site fetch versus the sites list endpoint or the many sub-resource site tools.

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