One property and its permission level

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint, so the safety profile is covered. The description adds no behavioral context on top of that: it does not mention that a mismatched property shape returns 403 (that is relegated to the schema) or what the permission level values are.

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?

A single short sentence with no filler, front-loaded on the resource. It is slightly too terse to read as a complete statement of purpose, which keeps it out of the top band.

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 the description omits the return shape beyond saying 'permission level.' For a simple two-parameter read tool with full schema coverage and complete annotations this is adequate, but the returned object's fields remain unspecified.

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%, so the schema already documents both parameters thoroughly, including the URL-prefix vs sc-domain: distinction and the 403 consequence. The description adds nothing about parameters, so baseline 3 applies.

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 names the resource (one property) and the payload (the permission level this account holds), which distinguishes it from list_sites, the plural enumerator in the sibling set. It is a verbless fragment, but 'get_site' plus this phrase is unambiguous about what the tool returns.

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 offers no when-to-use guidance and never contrasts itself with list_sites or list_verified_sites, which are the obvious alternatives for property lookups. The only routing advice (call list_sites for exact strings) lives in the schema text for the 'site' param, not in the description.

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