create_user

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only says 'Create a new user' but doesn't describe any side effects, permission requirements, idempotency, or what happens if the user already exists.

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 single sentence with no filler words, which is efficient. However, it is so brief that it lacks important context, though that is a matter of content rather than conciseness.

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 creation tool with three parameters and no output schema, the description is insufficiently informative. It fails to mention the return value, the role of required user_db_id, or how to handle errors, and does not help differentiate from 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 descriptions cover all parameters (user_id, attributes, user_db_id), so the baseline is 3. The description adds no additional semantics beyond the schema, such as relationships between parameters or default behavior.

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') and the target resource ('a new user') plus scope ('in a user database'), which distinguishes it from create_user_db. However, it doesn't explicitly differentiate it from other user-related operations like get_user or create_user_attribute, though those are different resources.

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 or any prerequisites. It simply states what it does without mentioning the required user_db_id or how it relates to create_user_db.

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