todo_update_checklist_item

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

Annotations already declare this is a non-read-only, non-destructive, open-world mutation, so the safety profile is covered. The description adds the useful partial-update semantics ('Rename and/or tick/untick' suggests fields are optional), but it omits permission requirements, whether unmentioned fields are preserved, error behavior, or response shape 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?

One front-loaded sentence with no filler. It states the operation and scope efficiently.

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?

A five-parameter mutation tool with 0% schema description coverage and no output schema needs more than one line. The description does not explain the required identifiers, how to obtain item_id, or what a successful update returns, so an agent would need to infer too much.

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%, so the description must explain the five parameters. It only hints at two operations (rename via text, tick/untick via checked) and never mentions list_ref, task_id, or item_id, nor which parameters are required. This leaves the agent dependent on bare schema names for addressing the target item.

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 states a specific verb ('Rename and/or tick/untick') and resource ('checklist item on a To Do task'), which is enough for an agent to identify the operation. It does not name the sibling tools it competes with (todo_add_checklist_item, todo_delete_checklist_item), so sibling differentiation is only implicit.

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 explicit guidance on when to use this tool versus todo_add_checklist_item or todo_delete_checklist_item, nor any prerequisites or restrictions. The 'and/or' phrasing implies partial updates are allowed, but that is inference rather than stated guidance.

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