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

Annotations declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, and destructiveHint=false. The description adds value beyond those annotations by disclosing the persist caching behavior, the return shape ({ok, tools} or {ok:false, error}), and the security note that secrets are not leaked. It does not contradict any annotation.

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?

Two tightly written sentences: the first gives the action and optional caching behavior, the second gives the return shape and security constraint. Front-loaded and free of filler.

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 only two parameters, no output schema, and annotation coverage for safety hints, the description supplies the missing return-value information and caching behavior. It is largely complete for the tool's complexity, though it could mention authentication or error conditions more explicitly for a connection-testing operation.

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 0%, so the description must carry parameter meaning. It explains the persist parameter's effect (cache discovered tool names on success) and implies that id identifies an org-scoped upstream server, but it does not explicitly define the id parameter or its expected format. Partial compensation for the coverage gap.

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 states a specific verb and resource: it lists an upstream server's tools and can cache the discovered names. It is distinguishable from most sibling MCP server tools (create/get/delete/update), though it does not explicitly name an alternative. The title 'Test MCP server connection' adds slight framing but the description clarifies the concrete behavior.

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 explains what happens with persist=true but does not say when to use this tool versus alternatives such as get_mcp_server, list_mcp_servers, or update_mcp_server. No when-to-use, when-not-to-use, or prerequisite guidance is provided.

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