list_pages

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

With no annotations and no output schema, the description carries the full burden and does disclose the return shape (clientId, url, title, lastSeenAt) plus the key trait that only 'live' pages are returned. It omits ordering, empty-result behavior, and whether calling it triggers any page discovery, which keeps it from a 5.

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?

Three short sentences, front-loaded with the action and resource, then the return fields, then the follow-up workflow. Every sentence earns its place with no redundancy.

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 zero-parameter, no-annotation, no-output-schema tool, the description supplies the two things an agent would otherwise lack: the returned fields and how the clientId feeds sibling tools. Only minor operational details like result ordering or pagination are absent, which is acceptable at this complexity.

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?

The tool takes zero parameters, so the baseline is 4. The description does not need to explain any inputs, and it productively redirects parameter attention to the clientId that downstream tools consume.

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 and resource ('Returns the live web pages attached to the local hub') and enumerates the entry fields, so the agent knows exactly what it gets. It does not explicitly contrast with siblings get_dom_tree / click_element, but the discovery-vs-action distinction is obvious from the resource alone.

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?

Provides clear usage context by telling the agent to take the returned clientId and pass it to the other tools to target a specific page, which effectively establishes this as the discovery step before any page interaction. It stops short of explicit when-not-to-use or exclusion language, but there are no competing siblings that list pages.

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