get_today_completed_tasks

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states what the tool does, not any side effects, permissions needed, or invariants. For a read operation, it is safe, but the lack of detail (e.g., 'read-only', 'no side effects') limits transparency.

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, clear sentence with no wasted words. It is appropriately concise for a simple tool, though it could be slightly more informative (e.g., defining 'completed today'). Still, it earns a high score for brevity.

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 simplicity (no parameters, no output schema), the minimal description is adequate but not complete. It fails to define 'completed today' (e.g., tasks with a completion date equal to today's date). Among many sibling tools, more context would help the agent decide when to use this tool.

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?

The input schema is empty, meaning no parameters. Since there are no parameters, the description does not need to elaborate. According to guidelines, a tool with 0 parameters has a baseline score of 4. The description does not contradict or miss any parameter details.

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 'Get all tasks completed today' clearly states the tool retrieves tasks completed today. It matches the tool name closely and is unambiguous. However, it does not differentiate from sibling tools like 'get_inbox_tasks' or 'list_tasks', which lowers the score from a 5.

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 guidance is provided on when to use this tool versus alternatives such as 'complete_task' or 'get_flagged_tasks'. The description lacks any contextual or preferential information, leaving the agent to infer usage.

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