Get browser page title

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

Annotations already communicate readOnly, idempotent, non-destructive behavior. The description adds that the page is explicitly addressed and tied to an isolated session, but does not disclose failure behavior or what happens when no title exists. No contradiction with annotations.

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 compact sentence that is front-loaded with the action and resource. There is no filler or redundancy; every phrase adds useful scoping information.

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?

Given the low complexity, strong annotations, and presence of an output schema, the description is mostly sufficient. It identifies the target resource and required session context, though it omits optional timeout semantics and alternative-tool guidance.

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%, so the description must compensate. It loosely maps pageId to 'explicitly addressed page' and sessionId to 'owning isolated session', but it does not explain timeoutMs or provide any additional format/meaning for the parameters beyond their names.

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 uses a specific verb ('Read') and resource ('title of one explicitly addressed page'), and clarifies the required session context. This distinguishes it from sibling tools like browser_get_url or browser_visible_text while stating exactly what value is returned.

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 clearly implies the tool is for reading a page's title when you have an explicit page and session. However, it does not explicitly state when to prefer this tool over alternatives, nor does it mention any exclusions or prerequisites beyond the required IDs.

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