get_user_tool

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

No annotations are provided, so the description carries the full burden. The verb 'Get' clearly signals a read-only operation with no side effects, but the description does not mention not-found behavior, permission requirements, or any other edge-case behavior. For a simple retrieval this is adequate but minimal.

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, front-loaded sentence that states the tool's action and target in a compact, waste-free way. Every word is necessary and contributes to understanding.

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 one required parameter, a full output schema, and a low-complexity read operation, the description is complete enough for an agent to select and invoke the tool correctly. No additional return value documentation is necessary because the output schema exists.

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 100% for the single user_id parameter, which is already described as an integer 'User ID'. The description adds only the redundant 'by ID' phrase and no additional semantic value beyond the schema.

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 uses a specific verb ('Get') and resource ('a specific GitLab user by ID'), making the purpose immediately clear. It also distinguishes itself from sibling tools like list_users and get_current_user by explicitly scoping to a single user by ID.

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 phrase 'by ID' implies the tool is appropriate when a user_id is known and a single user record is needed, but it does not explicitly mention alternatives like list_users for searching/browsing. Usage context is only implied, not clearly stated.

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