engine_health

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

Discloses what is reported (liveness, versions, data source) without mentioning side effects, which is appropriate for a read-only diagnostic tool. No annotations provided, but description is transparent.

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?

Single sentence front-loading the key purpose and listing specifics. No redundant words.

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?

Sufficiently complete for a zero-parameter tool with an output schema. Covers all aspects an agent needs to understand the tool's function.

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?

No parameters, schema coverage 100%. The description adds value by explaining the purpose beyond the empty schema, earning baseline 4.

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 states it reports 'engine + install diagnostics' including specific items like versions and data source. This distinguishes it from sibling tools that deal with builds, items, or updates.

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?

Implied usage as a diagnostic tool without explicit when-to-use or alternatives. No sibling tools serve a similar diagnostic purpose, so it's clear but not explicitly guided.

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