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

No annotations are provided, so the description carries the full behavioral burden, and it does not meet it. It hints that validation matches other surfaces, but omits critical traits: whether the account is immediately active, whether verification email is sent, whether the caller is logged in afterwards, rate limits, and what happens with the invitation tokens.

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?

It is short and front-loaded, but one of the two sentences is a redundant restatement of the tool name and the other is a vague parity claim, so the brevity comes from omission rather than efficiency.

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 6-parameter account-creation mutation with no annotations, no output schema, and sparse schema descriptions, the description is far too thin. An agent cannot tell what the call returns, what happens on success, or how invitation tokens change behavior.

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 only 17% (just acceptTerms), yet the description adds nothing about name, email, password constraints, or the two invitation token parameters. Name/email/password are largely self-evident, but the invitation flows are undocumented in both schema and description, so it fails to compensate for the low coverage.

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 essentially restates the tool name ("account.register") as "SAGOT account.register", which is a tautology rather than a stated verb+resource. It never says plainly that this creates a new user account. The only added information is a note about parity with other surfaces.

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?

There is no when-to-use guidance and no differentiation from close siblings such as account_login, members_invite, waitlist_join, or account_acceptTerms. The sentence about sharing authorization/validation with website, API and CLI is a consistency note, not an instruction on when to select this tool.

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