health_check

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

With no annotations, the description carries the behavioral disclosure burden. It communicates the action and what will be returned ('Backend type, connection status, and basic diagnostics'), but it does not explicitly say that the tool is read-only or describe side effects. The check/connectivity wording implies safety but leaves the guarantee implicit.

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 three short, front-loaded sections: action, return value, and use cases. Every sentence contributes useful information and there is no redundancy or fluff.

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 parameterless, simple diagnostic tool, the description is complete: it states what is checked, what is returned, and when to use it. The presence of an output schema covers detailed return-field definitions, so nothing necessary is missing.

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, and the schema is complete and empty. Per the baseline for no-parameter tools, the description adds sufficient context by outlining the returned health-check details.

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 uses a specific verb-resource pairing: 'Check the health and connectivity of the memory backend.' It clearly defines a diagnostic operation and is immediately distinguishable from all sibling tools, which handle memory/storage operations.

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 'Use for:' section explicitly lists two intended scenarios: 'Troubleshooting connection issues, verifying configuration.' None of the sibling tools cover this diagnostic purpose, so the tool is uniquely positioned for these cases.

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