manage_tabs

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It names four actions but does not disclose side effects such as whether opening a new tab switches focus, what happens when closing the active tab, or how list results are returned. This is thin for a tool that can mutate tab state.

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 with no filler. The action list is front-loaded and immediately scannable, making it easy for an agent to parse the tool's scope quickly.

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?

The description is adequate for basic action dispatch, and the schema covers all parameters, but it omits conditional dependencies and state-change caveats. Since there is no output schema, the list action's return format is also left unspecified, though this is not a major blocker for using the tool.

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%, with each parameter already documented, including conditional requirements for url and tabIndex. The description only restates the action names and adds no extra semantic detail beyond what the schema provides, so the baseline score applies.

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 clear verb ('manage') with a specific resource ('browser tabs') and enumerates four concrete operations: list, switch, open, and close. This makes the tool's purpose immediately distinguishable from sibling tools that operate on the current page or browser lifecycle.

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 listed actions imply tab-level usage, but the description does not explicitly state when to use manage_tabs versus siblings like navigate (for current-tab navigation) or launch_browser. There is no when-not-to-use guidance or mention of alternatives, so usage context is only implied.

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