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

No annotations are provided, so the description must disclose behavior. It only lists output content (quality scores, install paths, env vars) but fails to state whether the operation is read-only, requires authentication, or has any side effects, leaving an agent without critical safety information.

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 sentence that immediately states the tool's purpose and key details, with no filler. It is concise and well-structured.

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 simple tool with one parameter and no output schema, the description covers the core purpose and the categories of comparison, giving the agent enough context to invoke it. It does not elaborate on data sources or presentation format, but given the simplicity, it is sufficiently 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 schema fully describes the single required parameter 'slugs' with the context that these are server slugs to compare. The description adds minimal extra meaning beyond reinforcing the 2-5 count, which is already encoded in the schema's minItems/maxItems, so the baseline 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?

Clearly states it performs side-by-side comparison of 2-5 MCP servers, listing specific comparison dimensions (quality scores, install paths, env vars). This distinguishes it from sibling tools like assess_server (single server) and search_mcp_servers (search).

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 for comparing multiple servers by specifying a 2-5 range, but it doesn't explicitly state when to use this tool over alternatives or mention exclusions. No reference to sibling tools is made, so guidance is mostly implicit.

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