Azure DevOps MCP Server

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

No annotations are provided, so the description carries the full burden. It states the tool retrieves identity information, which implies a read-only operation, but doesn't disclose behavioral traits such as authentication requirements, rate limits, error conditions, or what specific data is returned (e.g., user ID, name, email). The examples hint at use cases but don't clarify operational behavior.

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, well-structured sentence that front-loads the core purpose ('Get the current authenticated user identity') and follows with practical examples. Every part adds value without redundancy, making it efficient and easy to parse. It's appropriately sized for a simple, parameterless tool.

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 tool's simplicity (0 parameters, no output schema, no annotations), the description is adequate but has gaps. It explains the purpose and provides usage examples, but without annotations or output schema, it lacks details on return values (e.g., what user identity fields are included) and behavioral constraints. For a basic read tool, it's minimally viable but could be more informative.

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 0 parameters, and schema description coverage is 100%, so there are no parameters to document. The description doesn't need to add parameter semantics, and it appropriately avoids discussing inputs. A baseline of 4 is applied since no parameters exist, and the description doesn't introduce confusion about inputs.

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 purpose: 'Get the current authenticated user identity' specifies the verb (get) and resource (user identity). It distinguishes from siblings like get_user_profile by focusing on the authenticated context, though it doesn't explicitly name alternatives. The examples (voting on PRs, assigning work items) add practical context but don't fully differentiate from all siblings.

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 implies usage context through the examples ('useful for knowing your user ID for voting on PRs, assigning work items, etc.'), suggesting when this tool might be helpful. However, it doesn't explicitly state when to use this vs. alternatives like get_user_profile or get_my_role, nor does it provide exclusions or prerequisites. The guidance is helpful but not comprehensive.

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