browser_session_end

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

Describes key behavioral traits (detaches debugger, default ungroup vs close) beyond what annotations would provide. Given no annotations, carries the burden well, though missing details on reversibility or side effects.

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 sentence, front-loaded with purpose, no wasted words. Efficiently conveys all necessary information.

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 and lack of output schema or annotations, the description is fairly complete. Could mention it's the inverse of browser_session_start, but not essential.

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?

Explains the effect of the single parameter 'closeTabs' (ungroups by default, closes if true) adding meaning beyond the schema, which has 0% description coverage.

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?

Clearly states it ends the current session and provides specific actions (detaches debugger, ungroups/closes tabs), distinguishing it from siblings like browser_close_tab or browser_session_start.

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?

Implies usage by naming the action, but no explicit guidance on when to use this versus alternatives like browser_close_tab or when not to use.

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