Backend health check

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

Annotations already cover the safety profile (readOnlyHint, idempotentHint, openWorldHint), and the description adds only the database-targeting context beyond that. It does not disclose what a healthy response looks like, whether latency is returned, or how failures surface, which matters given there is 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?

A single six-word sentence that front-loads the primary verb ('Ping') and names the target resource. Every word earns its place, and the size is appropriately proportionate to a parameterless tool.

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 tool with strong annotations the definition is nearly complete, but the absence of an output schema means the description should indicate what the ping returns or what signals health. It also never reconciles 'backend' vs. 'backend database,' leaving the scope of the health check slightly underspecified.

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 takes zero parameters and the schema is an empty object with 100% coverage, so there is nothing the description needs to document. Baseline 4 applies because no parameter semantics could be missing.

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 and resource — 'Ping the Nuvio backend database' — which clearly identifies this as a liveness/health probe. It is naturally distinguishable from the ~60 sibling CRUD tools. Minor ambiguity remains between the title's 'backend health check' and the description's narrower 'backend database,' and 'ping' is not defined in terms of what it 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?

Usage context is implied by the tool's nature: a health check is for verifying backend connectivity, and no sibling provides a comparable liveness probe. However, the description never explicitly states when to run it (e.g., before troubleshooting other tools) or when not to, leaving the agent to infer the trigger conditions.

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