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

There are no annotations or additional behavioral details. The description does not mention side effects, partial-update semantics, authentication requirements, or the response format.

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 clear sentence with no redundant information. It is well-structured and easy to read.

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 nested object parameters and lack of annotations, the description is far too sparse to fully support correct invocation. Important details about expected fields, output, and side effects are missing.

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 parameters 'extra' and 'profile' are entirely unexplained, and 'fullname' is only self-explanatory by name. With no parameter descriptions or schema documentation, the meaning of the inputs is ambiguous.

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 it updates the authenticated user's profile, matching the title. It distinguishes from get_my_profile (read) and update_user (admin update) by targeting the current user.

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 related tools such as get_my_profile or change_my_password. The description only states the action, leaving the selection context implicit.

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