clock_out

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states the action without explaining consequences, side effects, prerequisites, or failure behavior (e.g., what happens if no interval is open). This is severely inadequate.

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, concise sentence with no wasted words, placing the key action at the start. It achieves maximum conciseness, though this is at the expense of substance.

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?

The description is insufficient for a tool in a domain with numerous sibling tools (clock_in, start_effort, etc.). It does not explain what an open interval is, when to call this tool, or what the output signifies. Given the optional parameters and presence of an output schema, much needed 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?

The description does not mention either parameter ('at' or 'note') and adds no meaning beyond the schema's type definitions. With 0% schema description coverage, the description fails to compensate for the missing parameter explanations, leaving the agent without hints about timestamps or note content.

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 'Close' and object 'the open interval', clearly indicating the action of ending an interval. However, it does not define what an interval is or differentiate it from sibling tools like clock_in or start_effort, leaving some ambiguity for an agent without domain context.

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 provides no guidance on when to use this tool, such as whether an interval must be open first, nor does it mention any alternative tools or conditions for exclusion. It is a bare statement with no decision aid.

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