post_user

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

Annotations already declare the safety profile (readOnlyHint=false, destructiveHint=true, idempotentHint=false, openWorldHint=true), so the description would need to add non-obvious context. It adds none: no mention that passwords must match a confirmation field, that admin/teams are optional, or that creation is non-idempotent (duplicate emails may fail).

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?

It is short, but not efficient: the second sentence duplicates the first verbatim in meaning, and the space is spent on redundancy rather than the field semantics an agent actually needs.

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 non-idempotent creation endpoint with a nested required body, no output schema, and annotations that only cover safety, the description is far too thin. It leaves the required payload contract, the password-confirmation rule, and failure modes entirely undocumented.

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 description coverage is 0% at the exposed level and the single 'body' parameter wraps a nested object with five required fields (including password_confirmation and an optional admin flag). The description mentions no field, format, or matching rule, so it does nothing to compensate for the coverage gap.

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 does name a specific verb and resource ('Create a user'), so the core purpose is legible. However, the second sentence ('Create a new user account') is a pure restatement, and nothing distinguishes this from sibling write tools like put_user, make_admin_user, or post_team.

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?

There is no when-to-use guidance at all. With siblings such as put_user, make_admin_user, remove_admin_user, and archive_user in the same namespace, an agent gets no signal about which user-mutation tool to pick or what preconditions apply.

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