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

With readOnlyHint=true already declaring the safety profile, the description adds useful behavioral context by specifying the exact account attributes (email, plan status, free-site slot, credit balance) that will be reported. It introduces no hidden side effects or contradictions with the annotation.

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?

One compact sentence front-loads the subject and lists the relevant output fields without repetition, filler, or restating the title. Every word earns its place.

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 zero-parameter, read-only identity tool with no output schema, this description is sufficient: it names the scope ('connected account') and the returned fields. Nothing an agent needs to select or successfully call this tool 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?

The tool has no parameters and no schema descriptions, so the parameter burden is zero; the no-parameter baseline of 4 applies. The description contributes nothing about parameters because there is nothing to contribute.

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 identifies the resource ('the connected sitectrl account') and enumerates the returned data fields, clearly distinguishing it from the sibling site-management tools. It lacks an explicit verb like 'retrieves' or 'returns,' but the intent is unambiguous from the noun phrase and tool title.

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 makes clear this is the tool for inspecting the currently connected account's identity and quota details—context that lets an agent select it for account-status questions. It does not name alternatives, but no sibling covers account identity, and zero parameters makes invocation trivial.

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