MetaMCP Admin MCP

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

With no annotations provided, the description carries the full burden of behavioral disclosure but provides minimal information. It does not state whether this is read-only, what comparison dimensions are used, or what the output format contains despite having no output schema.

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 consists of a single efficient sentence with no redundant words, providing immediate clarity on the tool's core function without extraneous information.

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 zero parameters and no annotations or output schema, the description establishes basic functionality but fails to compensate for missing metadata by describing comparison criteria, output structure, or side effects. Adequate but with clear gaps.

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 contains zero parameters (empty object), so the baseline score of 4 applies per evaluation rules. With no parameters to describe, there is no additional semantic burden on the description.

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 provides a specific verb ('Compare') and clear resources ('MCP servers' across 'MetaMCP instances'), clarifying that servers are the subject compared across instances rather than comparing instances themselves. However, it does not explicitly differentiate from sibling list_instances or clarify the comparison methodology.

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?

No explicit guidance on when to use this tool versus alternatives like list_servers or list_instances. There is no mention of prerequisites or specific scenarios where cross-instance comparison is needed.

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