get_user_profile

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

With no annotations provided, the description carries the full burden of explaining behavior. It discloses that the tool returns a JSON string containing profile and preferences, which indicates it is a read-only operation. However, it does not mention authentication requirements, whether it returns the current user or a specified user, or any potential error conditions. This is a basic level of transparency.

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 exceptionally concise, with two short sentences. The first states the action, the second outlines the return format. No wasted words.

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 no-parameter getter tool, the description is almost sufficient. The output schema exists and would detail the return structure, so the high-level summary in the description is adequate. However, it does not specify whose profile is retrieved, but the tool name implies the current user. Given the simplicity, the description is largely complete.

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 tool has zero parameters, so there are no parameter semantics to document. Per the baseline guidance for 0 params, a score of 4 is appropriate, and the description does not attempt to add redundant information.

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 the tool's function: retrieving a user profile and preferences. This is distinct from sibling tools, which all focus on bookmarks, tags, or bundles, so the purpose is unambiguous.

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 does not explicitly discuss when to use this tool or contrast it with alternatives. However, the tool's name and the fact that no sibling tool handles user profiles imply its intended usage scenario. This is an implied usage, not an explicit guideline.

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