Update Units By Item

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

With no annotations and no parameter descriptions, the description carries the full burden of behavioral disclosure. 'Update One' communicates only that some single entity is updated; it does not disclose effects, required permissions, partial-update semantics, or which fields can be changed. This is minimal signal beyond the tool's name.

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?

'Update One' is short, but this is under-specification rather than concise clarity. Two words carry almost no information that the name and title do not already provide.

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 an update tool with 14 parameters, zero annotation coverage, and distinguishable sibling operations, a complete description would need at least the resource, scope, and parameter semantics. This description is inadequate for an agent to select and invoke the tool correctly.

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% across 14 parameters, and the description names no parameters or field semantics. It provides no help in understanding required fields like item_id and name or optional fields such as aliases, fraction, standardUnit, and abbreviation.

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 'Update One' provides only a verb and an ambiguous target. It does not identify the resource (units), so an agent must infer the purpose entirely from the tool name. It fails to distinguish updating a single unit from update_units_merge or other sibling update operations.

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?

There is no guidance about when to use this tool versus update_units_merge, get_units_by_item, or create_units. No context, prerequisites, or conditions are stated.

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