multi_browserbase_stagehand_navigate_session

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

No annotations are provided, so the description carries the full burden. It mentions the URL reliability constraint, which is useful behavioral context, but lacks critical details: it doesn't specify what happens on navigation failure, whether it waits for page load, if it returns any status, or if it requires specific permissions. For a navigation tool with zero annotation coverage, this leaves significant behavioral gaps.

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 efficiently structured in two sentences: the first states the core purpose, and the second provides usage guidance. Every sentence adds value without redundancy, making it appropriately sized and front-loaded for quick comprehension.

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 moderate complexity (navigation with session context), no annotations, and no output schema, the description is partially complete. It covers the purpose and basic usage but misses behavioral details like error handling, return values, or integration with other session tools. It's adequate as a starting point but lacks depth for reliable agent operation.

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?

Schema description coverage is 100%, with both parameters ('sessionId' and 'url') clearly documented in the schema. The description adds no additional parameter details beyond what the schema provides, such as URL format requirements or session ID constraints. With high schema coverage, the baseline score of 3 is appropriate as the description doesn't enhance parameter understanding.

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 ('Navigate to a URL') and resource ('in the browser'), distinguishing it from siblings like screenshot or session management tools. However, it doesn't explicitly differentiate from 'browserbase_stagehand_navigate' (the non-session version), leaving some ambiguity about when to use this specific session variant.

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 clear context for usage ('Only use this tool with URLs you're confident will work and stay up to date') and offers an alternative starting point ('Otherwise, use https://google.com'). It doesn't explicitly state when to use this vs. the non-session 'navigate' tool or other session-based tools, but the guidance on URL reliability is helpful.

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