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

The annotations already declare readOnlyHint=true and openWorldHint=true, so the description does not need to establish safety. The description adds useful return-field context but does not go beyond annotations to disclose rate limits, auth requirements beyond the connected OAuth app, or other behavioral traits.

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 two concise sentences with the resource and returned fields front-loaded, followed by a specific use case. Every sentence earns its place.

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 zero parameters, no output schema, and read-only annotations, the description is largely complete: it identifies the resource, lists the salient return fields, and gives a practical use. It could be slightly stronger by explicitly differentiating itself from gocanvas_get_user or by mentioning whether it returns only the current authenticated user.

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?

There are zero parameters, so the baseline is 4. The description correctly adds no parameter semantics because none exist, and it focuses on the response shape instead.

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 identifies the resource as the user who owns the connected OAuth application and enumerates the key fields returned (id, login, company id/name, default department, role). It distinguishes itself implicitly from gocanvas_get_user by tying the resource to the 'connected OAuth application', though it does not name the sibling explicitly.

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?

It provides one concrete usage context: 'Use it to learn the default department id.' However, it does not state when to use this tool versus alternatives such as gocanvas_get_user, nor does it describe exclusions or prerequisites.

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