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vocametrix_calculate_sz_ratio

Calculate the S/Z phonation ratio from separate /s/ and /z/ recordings to screen for vocal fold pathology when ratio exceeds 1.4.

Instructions

Calculate the S/Z phonation ratio (duration of sustained /s/ vs /z/). Normal ratio ≈ 1.0. Ratio > 1.4 suggests vocal fold pathology (the /z/ is shorter). Requires two separate recordings: one of sustained /s/ and one of sustained /z/.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sFilePathYesRecording of sustained /s/ phonation (voiceless)
zFilePathYesRecording of sustained /z/ phonation (voiced)
patientAgeYesSpeaker age in years (0–120)
patientGenderNomale
clinicalContextNoClinical context for threshold interpretation
Behavior3/5

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

No annotations are supplied, so the description must cover behavioral aspects. It explains the ratio's clinical interpretation but omits the output format (e.g., numeric value) and potential error conditions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences with the most critical information front-loaded. No extraneous content.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description explains the concept well but lacks mention of the return value (the ratio itself). Given no output schema, this is a notable gap for completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 80%, and the description adds clinical context (threshold, requirement for two recordings). It does not elaborate on individual parameters beyond the schema, so baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it calculates the S/Z phonation ratio, defines normal and pathological thresholds, and specifies the requirement for two recordings. This distinguishes it from sibling 'calculate_*' tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It explicitly states the prerequisite of two separate recordings, giving clear context for usage. No explicit when-not-to-use or alternatives are provided, but the condition is well-defined.

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

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