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davidmosiah

Wellness Nourish

Estimate meal photo

nourish_estimate_meal_photo
Read-onlyIdempotent

Estimate meal nutrition from a photo observation and require user confirmation before logging intake.

Instructions

Estimate meal nutrition from an agent-provided photo observation; always requires user confirmation before logging.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
image_descriptionYes
detected_itemsNo
localeNoen-US
meal_typeNoother
response_formatNojson
Behavior4/5

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

Annotations provide readOnlyHint=true and idempotentHint=true. The description adds that user confirmation is required before logging, which is useful behavioral context beyond annotations. No contradiction.

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?

Single sentence with no wasted words. Purpose is front-loaded.

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

Completeness2/5

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

No output schema is present, yet the description does not explain the return format or how the estimation results are presented. With 5 parameters and no schema descriptions, additional context is needed for complete understanding.

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

Parameters1/5

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

Schema description coverage is 0%. The description gives no explanation of parameters like detected_items, meal_type, or response_format. For a tool with 5 parameters including a complex array, this is insufficient.

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 the verb ('Estimate') and resource ('meal nutrition from an agent-provided photo observation'). It distinguishes from siblings like nourish_estimate_meal (likely text-based) by specifying photo observation and the confirmation requirement.

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

Usage Guidelines3/5

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

The description implies a workflow (requires user confirmation before logging) but does not explicitly say when to use this tool versus alternatives like nourish_analyze_food_image or nourish_estimate_meal.

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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