blood_alcohol_calc

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

No annotations are present, so description carries full burden. It uses 'Estimate' to indicate approximation, which is good, but lacks disclosure of limitations (e.g., not for legal accuracy) or error handling. Parameter listing adds some transparency but not beyond 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?

Description is short and front-loaded with purpose. The parameter list is efficient, but the structure could be slightly improved (e.g., separating parameter descriptions more clearly). No redundant content.

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 the presence of an output schema (context signal), description does not need to detail return values, but it fails to specify BAC units (e.g., g/dL) or mention edge cases (e.g., zero weight). Adequate for a simple calculator but not comprehensive.

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?

Schema description coverage is 0%, so description compensates by providing units ('kg', 'hours') and clarifying 'standard drinks' and drink type options. This adds meaning beyond schema titles and defaults, though no formula assumptions are given.

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 'Estimate blood alcohol content (BAC) level' using a specific verb and resource. It distinguishes itself from sibling calculator tools (e.g., bmi_calc, body_fat_calc) by focusing on BAC estimation.

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 implies usage (when BAC estimation is needed) but does not provide explicit when-to-use or when-not-to-use guidance. No alternatives are mentioned, which is acceptable given no direct sibling competitors.

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