navigate

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

With no annotations, the description carries the behavioral transparency burden. It does disclose wait conditions, timeout, and automatic retry, which is useful. However, it does not mention side effects like tab state changes, auto-switching behavior, or what constitutes failure for a navigation attempt.

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?

Two sentences, front-loaded with the primary purpose, and no filler. Every clause adds useful information about scope or configurable behaviors.

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 plus the detailed schema covers the core behavior for an 8-parameter tool, but with no annotations and no output schema, it leaves gaps around return values, failure semantics, and how this tool fits with sibling navigation-related tools. It is adequate but not fully complete.

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 high at 75%, so the baseline is 3. The description adds general context about configurable wait and retry, but it does not clarify uncovered parameters such as timeout units or the exact semantics of tabIndex for switching versus closing. The schema already provides most parameter meaning.

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 identifies a specific verb and resource: 'Navigate to a URL' plus explicit tab management operations. It distinguishes this tool from siblings like click, type, and wait by scoping it to navigation and tab actions.

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 implies when to use this tool (when you need to navigate or manage tabs) but provides no explicit guidance on when not to use it or how it relates to siblings like wait, see_page, or browser_init. The usage context is clear only by inference.

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