complete_task

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Mark as completed' conveys the effect but does not mention idempotency, permissions, what happens if the task is already completed, or the response shape. 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 front-loaded sentence with zero fluff. It is appropriately concise for a simple action, though it omits behavioral context that could have been included without much length.

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 low schema/annotation richness and absence of an output schema, the description leaves out important context: no mention of return values, side effects, required permissions, or behavior on already-completed tasks. The tool is simple, but the description is too sparse to be fully self-sufficient.

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%, and the description does not explain the parameters at all. While listId and taskId are reasonably self-explanatory, the description fails to compensate for the absent schema documentation, providing no meaning beyond the bare parameter names.

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 ('mark as completed') and resource ('Microsoft To Do task'), which clearly identifies the operation. It distinguishes itself from siblings like update_task (general updates) and create_task (new task creation) via the explicit completion action.

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 the usage scenario: when you want to set a task to completed. However, it provides no explicit guidance on when not to use it, such as 'use update_task for modifying other task fields', leaving alternative selection to inference.

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