create_user

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

With no annotations, the description carries the full burden of behavioral disclosure. It only mentions the admin permission requirement, but does not state whether the operation is idempotent, what it returns, what side effects occur, or what fields are expected in the user object. This is minimal transparency.

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 short and front-loaded with the core action, followed by a necessary permission note. It contains no fluff, though the sparse content borders on under-specification; however, the conciseness itself is effective.

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?

Despite having an output schema, the input schema is a vague open object and the description provides no additional context about required fields, validation rules, or expected behavior. The tool is not adequately specified for correct invocation, especially compared to the richness of the sibling tools.

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 schema defines a single 'user' property with additionalProperties true and no description, and the description itself says nothing about the parameter. With schema coverage at 0%, the description completely fails to explain what the 'user' object should contain, making it impossible for an agent to construct a valid input without external knowledge.

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 'Create a user' clearly states a specific verb and resource, and distinguishes this from sibling tools like update_user and delete_user. The additional 'Requires ADMIN' does not obscure the purpose.

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 provides a prerequisite ('Requires ADMIN') but no explicit guidance on when to use this tool versus alternatives like update_user or create_api_key. The usage context is implied but not elaborated with exclusions or alternative references.

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