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

Annotations already declare readOnlyHint and idempotentHint, so the description correctly spends its words on non-obvious behavior instead: unconfirmed agent-created accounts are deleted at deletesAt, and confirmation gates appointment emails/texts, search indexing, invites, and API keys. That is genuinely additive. It stops short of describing result freshness or what an empty/uninitialized account looks like, so not 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 answer (is the owner confirmed) and no wasted framing; the blocked-features list is a parenthetical enumeration that earns its space by explaining consequences. It is dense but tightly packed, with the dependency warning and scope at the end where they belong.

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, so the description must carry the return payload — and it does, enumerating confirmation status, blocked capabilities, deletesAt, and location booking page URLs. Combined with the scope note and cross-tool dependency, an agent has everything needed to call and interpret this 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?

The tool takes zero parameters, so there is no parameter semantics to explain and the baseline of 4 applies. The description correctly avoids padding with irrelevant argument talk.

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 resource and the exact facts it returns: email-confirmation state, what is blocked until confirmation, deletion at deletesAt, and each location's booking page URL. This clearly separates it from siblings like verify_email, resend_verification_email, and get_location_setup, which an agent might otherwise confuse it with.

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?

Gives explicit when-to-use routing: 'Check it before invite_member or create_api_key, which both need a confirmed owner email' — naming two concrete siblings and the condition that triggers this call. It also names the scope (locations:read, any member), so prerequisites are settled before invocation.

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