Get Monthly Food Diary Summary

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

Annotations already declare read-only, idempotent, non-destructive behavior. The description adds that it returns daily totals for logged days and focuses on calorie/macro data, providing some behavioral context beyond annotations, though it omits details like handling of missing days.

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?

The description is brief but complete, with a front-loaded purpose sentence, a use-case statement, and bulleted arguments. No wasted 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?

Given simplicity and rich annotations, the description covers the return format (daily totals) and purpose. It could mention specific macro fields, but the term 'calorie/macro totals' is sufficient for a read tool without output schema.

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 coverage is 100% with clear parameter descriptions for month and year. The description repeats these with minor additions (e.g., '2026' example), not adding significant meaning beyond the schema.

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 the tool retrieves daily calorie/macro totals for an entire month, specifying the resource (daily totals) and scope (monthly). This distinguishes it from siblings like 'get_food_entries' which likely target single days.

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 includes 'Useful for tracking adherence and trends,' which implies when to use, but it does not explicitly contrast with alternatives like single-day queries or other tools. The context is clear but lacks exclusionary guidance.

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