Open list in Docling document

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

Annotations already indicate this is a mutating but non-destructive operation. The description adds useful preconditions about the document being cached and the stack cache having content, but it does not clarify the stateful nature of opening a list group or what the agent should expect afterward.

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 reasonably concise and front-loads the core purpose. There is minor redundancy between 'Open a new list group' and 'creates a new list structure,' but overall the wording is efficient.

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 one-parameter tool with annotations and an output schema present, the description covers the essential precondition and core behavior. It could mention subsequent list-item operations, but this is not required for correct invocation.

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% and the single document_key parameter is already described. The description adds context about the document needing to exist in the local cache but does not materially extend the parameter-level meaning.

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 action: opening/creating a new list group within an existing cached document. It is distinct from siblings like close_list or add_list_items, though it does not explicitly name them.

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 prerequisites are clear: the document must exist and the stack cache must have at least one item. However, the description does not explain when to choose this tool over related list operations, such as add_list_items_to_list_in_docling_document, so usage context is only implied.

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