update_shopping_list_item

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

There are no annotations, so the description carries full responsibility for behavioral disclosure. It says 'Update' but does not clarify partial-update semantics (e.g., whether only provided fields are changed), error handling for nonexistent items, or any side effects. This is a significant gap for a mutation tool.

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 a single, focused sentence that is front-loaded with the core action. Every word contributes to the purpose, and there is no padding or redundancy.

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 the tool's complexity (5 parameters, no annotations, no output schema), the description provides only minimal context. It states the purpose and gives examples but omits critical details like partial update behavior or response format. It is minimally viable but not comprehensive.

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 100%, so the baseline is 3. The description's mention of 'check/uncheck' and 'change amount' loosely maps to the 'checked' and 'amount' parameters but adds no new meaning beyond the schema descriptions. It does not compensate for any missing schema info.

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 a specific verb ('Update') and resource ('existing shopping list item'), with concrete examples ('check/uncheck, change amount'). This distinguishes it from sibling tools like add_shopping_list_item, remove_shopping_list_item, and get_shopping_list.

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 implies usage for modifying existing items but does not provide explicit guidance on when to use it versus alternatives, nor does it mention exclusions or prerequisites. The examples hint at typical use cases but lack direct comparative guidance.

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