get_targets

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

Annotations already declare the read-only, idempotent, open-world, and non-destructive nature, lowering the burden. The description adds a small behavioral cue about the return format being like the targets shown beside diary totals, but it does not disclose units, scope of nutrients, or how it differs from get_macro_targets.

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?

Single sentence, front-loaded with the resource and scope, and no filler. It communicates the core purpose efficiently without unnecessary detail.

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?

For a parameterless read-only tool with an output schema, the description is mostly sufficient. However, given the sibling get_macro_targets, the description does not clarify how 'nutrient targets' differs from 'macro targets', so an agent may not reliably select between them based on this definition alone.

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?

The tool takes zero parameters, so the baseline is 4. The description reinforces the account-level scope, which is the only semantic needed for a parameterless retrieval.

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 identifies the resource ('nutrient targets'), scope ('for the account'), and a display context ('as shown beside the diary totals'), so an agent knows what it retrieves. However, it does not distinguish itself from the sibling get_macro_targets, which could be the same or a related resource.

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?

No guidance is given about when to use this tool instead of alternatives such as get_macro_targets or set_nutrient_target. The description implies retrieval of account-level targets but provides no exclusions, conditions, or comparison to sibling tools.

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