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

No annotations are provided, so the description carries the behavioral burden. 'Health-check' and 'confirms' imply a read-only, non-destructive operation with no side effects, which is the key behavioral trait an agent needs. The presence of an output schema covers return-value expectations.

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, front-loaded sentence with no filler. It immediately states the tool's purpose and avoids repeating any schema or annotation 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?

For a zero-parameter health-check tool with an output schema, this description is fully sufficient. There are no inputs, side effects, or complex behaviors to explain, and the sibling context confirms its unique role.

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 zero parameters, so parameter-semantics guidance is not needed. The description adds no parameter information, but the baseline of 4 applies because there is nothing to document.

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 identifies this as a health-check tool with a specific verb ('confirms') and resource ('the MCP server is wired up correctly'). It is immediately distinguishable from the sibling financial-analysis tools, all of which perform data retrieval or computation rather than connectivity checks.

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 gives clear context: use when you need to verify that the server is reachable and properly connected. While it does not explicitly name alternatives or exclusions, the unique zero-parameter health-check purpose makes the appropriate usage obvious among the listed siblings.

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