create_user

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

No annotations are provided, and the description only states that a user account is created. It does not disclose mutation details, such as whether the operation is idempotent, what happens on duplicate email, or if permissions are validated.

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 concise with three short sentences. The first sentence highlights the admin requirement, and the third lists arguments. No unnecessary words.

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 incomplete for a creation tool with a complex parameter. It lacks error handling, response format (despite output schema existence), default values, and guidance on required fields within user_data.

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 input schema has 0% coverage (no parameter descriptions), but the description lists three expected fields (email, name, role) which adds meaning beyond the generic object schema. However, it lacks type constraints or optionality details.

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 tool creates a new user account, with the precondition 'admin only'. The verb 'Create' and resource 'user' are explicit. However, it does not explicitly differentiate from sibling tools like 'update_current_user', but the action is distinct enough.

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 mentions 'Requires admin privileges' as a precondition, which guides usage. However, it does not specify when not to use (e.g., if user already exists) or suggest alternatives like updating an existing user.

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