browser.stop_trace

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

With no annotations, the description must disclose behavior. It states it finalizes a trace and returns an artifact path, but does not mention side effects (e.g., whether the browser session continues), error conditions (e.g., if no trace is active), or the nature of the artifact path (e.g., local vs remote).

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?

Single sentence, no filler, directly conveys the core action and output. Front-loaded with the verb 'finalize'. No waste.

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 no output schema, the description mentions returning an artifact path, which is useful. However, it lacks context on prerequisites (e.g., must have an active trace), error handling, and what the artifact path represents (e.g., a file path or URL). This is adequate but not thorough for a finalization action.

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 schema has 0% description coverage, so the description should add meaning. It mentions 'for an active session' which links session_id to a session concept, but does not explain what a session is or how to obtain a valid session_id, nor does it clarify constraints beyond the schema's length limits.

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 verb 'finalize', the resource 'Playwright trace', and the result 'return its artifact path'. It distinguishes from sibling tools like browser.close_session which handle sessions, not traces.

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 explicit guidance on when to use this tool versus alternatives. It is implied it should be used after a trace has been started, but there is no mention of prerequisites, when not to use, or related tools like browser.create_session for comparison.

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