starbucks_logout

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

No annotations are provided, so the description must disclose behavior. It explicitly mentions 'clearing stored session cookies', which clearly explains the action and its effect on authentication state. It could add minor details like 'requires a prior login', but it is already transparent enough.

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 two sentences long, front-loads the action and purpose, and every word adds value. No unnecessary information is present.

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 has no parameters, no output schema, and a simple side effect (clearing cookies), the description covers the essential information: what it does and when to use it. It is complete for this straightforward function.

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 tool has zero parameters and schema coverage is 100%, so there is no need for additional parameter descriptions. The description correctly omits parameter details, and the baseline score of 4 is appropriate.

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 the action 'Log out of Starbucks' and the mechanism 'clearing stored session cookies', which unambiguously distinguishes this tool from siblings like starbucks_login and starbucks_status.

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 includes the guidance 'Use this to reset authentication state', which implicitly tells the agent when to invoke it (when a logout is needed). It lacks explicit when-not-to-use or alternatives, but for a simple logout function this is sufficient.

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