close_page

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

With no annotations, the description reveals the core behavior (closing a page) and an important constraint (last page cannot be closed). However, it omits details like error handling for invalid IDs or unsaved changes, leaving some behavioral gaps.

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 extremely concise with two short sentences. The first states the core action, the second adds a critical constraint. Every word earns its place, no fluff or repetition.

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 1-parameter tool with no output schema, the description covers the essential behavior and a key constraint. It does not address error conditions or side effects, but given the tool's simplicity, it is largely 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 coverage is 100% and already explains the pageId parameter (type number, source from list_pages). The description adds minimal semantic value beyond restating the parameter's purpose, so it meets the baseline without exceeding.

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 action 'Closes a page by its ID' and uniquely identifies the tool among siblings like list_pages and select_page. The added constraint 'The last open page cannot be closed' further clarifies its scope.

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 usage by providing an ID (likely from list_pages) and warns that the last page cannot be closed. It does not explicitly contrast with alternatives, but no other sibling tool performs a close operation, so ambiguity is low.

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