set_check_item

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. However, it only states that the tool marks an item as complete or incomplete, lacking details on behavior when the item is not found, idempotency, or error conditions. This leaves significant gaps for a mutation operation.

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 sentence with no wasted words. It is appropriately front-loaded, immediately stating the action and the possible outcomes. Every word earns its place, achieving high efficiency.

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 simplicity of the tool (3 required parameters, boolean toggle), the description is minimal. It does not address error handling, idempotency, or the behavior when the item is already in the desired state. Since an output schema exists, return values are not required, but other behavioral context is missing.

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?

Input schema description coverage is 0%, meaning no extra meaning is added beyond parameter names. The description does not explain the format or constraints of card_id, item_id, or how the 'complete' boolean is interpreted. The parameters are self-explanatory but the description fails to compensate for the lack of schema descriptions.

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 uses a specific verb 'mark' combined with the resource 'checklist item' and explicitly states the outcomes 'complete or incomplete'. This clearly distinguishes it from sibling tools like add_checklist_item, which creates items, or add_comment, which adds comments.

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 explicit guidance is provided on when to use this tool versus alternatives like add_checklist_item. While the purpose implies it is for toggling an existing item's state, the description does not state exclusions or mention prerequisites such as ensuring the item exists first.

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