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

Without annotations, the description discloses that it's a read-only monitoring endpoint with no auth, and lists specific data returned. No destructive behavior mentioned, which is appropriate for a health check.

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?

Description is brief and well-structured: purpose first, then bullet-like listing of outputs, then auth note. Every sentence adds value, no redundancy.

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?

Given zero parameters and no output schema, the description sufficiently explains the tool's behavior and return content (200 response with JSON including regression, baseline, blockers). Complete for a health check.

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 exist, and schema coverage is 100%, so the description adds no param info. Baseline 4 is appropriate as there's nothing 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?

Description clearly states it performs a deep health check for the V12 pipeline, listing specific outputs (last nightly regression, baseline metadata, preflight blockers). This distinguishes it from sibling tools like health_check or slate_health.

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?

Explicitly states no auth required and that it's a monitoring endpoint, implying usage for health monitoring. Could mention when to use V12-specific vs. general health check, but context is clear.

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