open-url

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

With no annotations provided, the description carries the full burden. It discloses a key behavioral trait: it waits for network traffic to settle after navigation. It also specifies the target context (Chrome debug browser window), which adds transparency. It doesn't mention side effects or prerequisites, but for a simple navigation tool this is adequate.

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 a single, front-loaded sentence with no redundant information. Every word earns its place: it states the action, the target, and the key post-navigation behavior.

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 tool with one required parameter and no output schema, the description is complete. It explains what happens (open + wait for settle), where (Chrome debug browser window), and is complemented by sibling tool 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?

Schema description coverage is 100%, so the baseline is 3. The description ('Open a specific URL') adds no extra meaning beyond the schema's 'The URL to navigate to'. The parameter semantics are fully captured by the schema alone.

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 'open', the resource 'a specific URL', and the context 'Chrome debug browser window'. It also distinguishes itself from siblings: it navigates the browser, while start-chrome-debug launches it and query-network-traffic/get-network-details inspect network data.

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 a workflow: after starting the debug browser (start-chrome-debug), this tool navigates to a URL and waits for network traffic to settle before inspecting it. Though it doesn't explicitly name alternatives, the behavior of waiting for network settle clarifies its role in a sequence.

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