navigate

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

With annotations already declaring readOnlyHint=false and openWorldHint=true, the description adds the allowed-domains guardrail, which is meaningful behavioral context. It does not disclose side effects (e.g., leaving the current page), wait behavior, or error handling, so it is adequate but not rich.

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?

A single front-loaded sentence with a parenthetical constraint; every clause carries useful information and nothing is redundant.

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?

For a simple two-parameter navigation tool, the description plus annotations convey the core action and a security boundary. However, session_id is left unexplained and there is no output schema or behavioral detail about navigation results, so important gaps remain.

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 0% for both required parameters. The description adds a constraint for the url parameter (allowed domains) but never explains session_id or how it relates to the profile, so it only partially compensates for the undocumented schema.

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 states a specific action ('Go to a URL') and resource, making the core function immediately clear. It also adds the allowed-domains constraint, but does not explicitly distinguish from siblings like open_session or back, so it stops short of the top score.

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 parenthetical adds a prerequisite ('must be within the profile's allowed domains'), which is useful context. However, it does not say when to use navigate versus open_session, back, or switch_tab, leaving alternatives to inference.

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