IT Tools MCP Server

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

Annotations provide readOnlyHint=false, indicating a write operation, which aligns with 'Generate' implying creation. The description adds that it generates 'random' MAC addresses, clarifying the generation method beyond annotations. However, it doesn't disclose other behavioral traits like whether addresses are globally unique, format defaults, or any rate limits. No contradiction with annotations exists.

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, efficient sentence with zero waste: 'Generate random MAC address'. It front-loads the core action and resource, making it immediately understandable without unnecessary elaboration. Every word earns its place, adhering to ideal conciseness standards.

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 low complexity (2 optional parameters, no output schema), the description is minimally adequate. It covers the basic purpose but lacks context on usage, output format (e.g., string representation), or error handling. With annotations providing some safety info, it meets a baseline but could be more informative for a generation tool.

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%, with clear descriptions for both parameters: 'prefix' as a MAC address prefix and 'separator' as an enum of ':' or '-'. The description adds no additional parameter semantics beyond what the schema provides, such as default behaviors or examples of full usage. With high schema coverage, the baseline score of 3 is appropriate.

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 'Generate random MAC address' clearly states the verb ('Generate') and resource ('MAC address'), with 'random' specifying the generation method. It distinguishes from sibling tools like 'generate_uuid' or 'generate_random_port' by focusing on MAC addresses specifically. However, it doesn't explicitly differentiate from all potential sibling tools in a broader context.

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 guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, typical use cases (e.g., network testing, device simulation), or when not to use it (e.g., for production addresses). With many sibling tools for generation tasks, this lack of context leaves the agent guessing about appropriate scenarios.

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