create-user

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

Annotations declare non-reonly, non-idempotent, and non-destructive behavior, which aligns with a creation operation. The description adds no further behavioral details (e.g., side effects, authorization needs), so it does not significantly enhance transparency beyond the structured annotations.

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 extremely concise at four words and front-loaded with the core action. It is efficient but could benefit from additional context without being verbose.

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?

With four parameters, three required, and no output schema, the description lacks sufficient context. It does not explain success/error behavior, return values, or what constitutes a 'user' in this context, leaving gaps for a tool that likely has moderate complexity.

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 100%, with all four parameters having descriptions. The description does not add any additional semantic meaning or context for the parameters beyond what is already in the schema, so baseline 3 is appropriate.

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 new user' clearly states a specific verb and resource. However, it does not explicitly differentiate from the sibling tool 'create-random-user', leaving it to the agent to infer that this tool creates a specific user rather than a random one.

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?

No guidance is provided on when to use this tool versus alternatives, such as 'create-random-user'. There is no mention of prerequisites, conditions, or exclusions, leaving the agent without context for appropriate invocation.

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