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

With no annotations provided, the description fully discloses the behavior: no password is used, a verification code is emailed, and the API key is obtained via a follow-up call. The consent requirement is also stated.

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 description is a few sentences but every sentence adds value: identity of the action, required inputs, a warning against passwords, the verification flow, and a consent requirement. No redundant or filler content.

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?

The description is complete for the agent's task: it explains what to request, what to avoid, the follow-up step (verify_account), and the consent condition. Since there is no output schema, return value details are unnecessary.

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 coverage is only 50% (name and username have descriptions; email and website do not). The description mentions only that username and email are required, but adds no detail about the optional name or website parameters, failing to compensate for the missing schema descriptions.

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 clearly states the verb 'Create a contributor account' and specifies the resource (contributor account) and target (the user). It distinguishes from sibling tools like verify_account by outlining the account-creation step.

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?

Provides explicit guidance: only needs username and email, never ask for a password, a 6-digit code is emailed, then call verify_account, and only proceed with explicit consent. This leaves no ambiguity about the next action.

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