get_user_by_user_id_settings_main

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description only adds the HTTP GET endpoint, which restates the read-only nature and adds no new behavioral context like required authentication, error behavior, or response characteristics.

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 compact and well-structured: a clear lead sentence, the endpoint, and the argument definition. Every line adds useful information and there is no filler or repetition.

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 strong annotations, the presence of an output schema, and a single simple path parameter, the definition supplies enough context for an agent to select and call the tool. It is not perfect because it omits explicit guidance on when to use it versus related user-setting tools, but that gap is largely covered by the purpose clarity dimension.

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 input schema has 0% description coverage, so the description needs to compensate. It does so by explicitly stating that user_id is a path parameter, and the tool purpose clarifies that user_id identifies the target user. For a single self-explanatory numeric parameter, this is sufficient to invoke the tool correctly.

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 a GET operation on a user's main/general settings, which distinguishes it from sibling tools for notifications, password, and permissions settings. It could be stronger by explicitly naming a sibling or stating what 'general settings' includes, but the verb and resource are specific enough.

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?

The description provides no when-to-use guidance, no exclusions, and no mention of alternatives such as get_user_by_user_id_settings_notifications or list_settings_main. An agent has to infer the intended use from the tool name and path rather than from explicit instructions.

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