goto

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

No annotations are provided, so the description carries the full behavioral burden. It clarifies only that navigation targets the agent's own tab, but says nothing about whether it waits for page load, replaces or preserves current page state, or what happens on an invalid/unreachable URL.

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 zero filler; the essential action and target are stated immediately.

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 trivial one-string-parameter tool with no output schema this is close to sufficient, and no return-value documentation is required. Still missing: load/wait semantics and failure behavior, which matter because the tool mutates the agent's browsing context.

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?

One parameter with 0% schema description coverage, so the schema supplies only a title ('Url'). The description adds no format guidance—absolute vs relative, required protocol scheme, or whether special values like 'about:blank' are accepted—beyond the word 'URL'.

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?

States a specific verb ('Open') and resource ('a URL in the browser tab the agent is using'), which is more precise than a bare name. However, it gives no signal to separate it from siblings like 'browse', 'look', or 'back', which plausibly overlap with navigation behavior.

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?

Contains no when-to-use guidance, no exclusions, and never names an alternative such as 'browse' or 'back'. The agent must infer from the name alone when navigation is the right call.

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