postUsers

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 states that the tool creates users, omitting any details about side effects (e.g., validation rules, idempotency, rate limits, or what happens on duplicate entries). The description provides minimal transparency beyond the basic action.

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 very concise (one sentence), which is efficient, but it lacks structural elements like prerequisites, usage examples, or parameter explanations. For a complex input schema, additional structure would be beneficial.

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?

Given the tool's complexity (nested array of user objects with relationships), no output schema, and no annotations, the description is insufficient. It does not explain required user fields (e.g., 'id' is required in attributes), unique constraints, or how to handle optional properties like 'email' or 'name'.

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 description adds no information about the parameters beyond what is in the schema. Although schema coverage is listed as 100%, the nested properties (e.g., attributes.id, attributes.email) lack descriptions, and the tool description does not clarify their meaning or constraints (e.g., required fields, format expectations).

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 'Creates a list of Users' clearly states the tool's action (create) and resource (Users), which distinguishes it from related tools like getUsers (read) and patchUser (update). However, it could be more precise by indicating that it creates multiple users in a single call (batch operation).

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 regarding when to use this tool versus alternatives. There is no mention of prerequisites, context (e.g., requiring authentication or specific permissions), or scenarios where this tool is appropriate (e.g., batch user creation).

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