tabs

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

No annotations are provided, so the description bears the full burden of explaining side effects. It only names actions and does not disclose that 'close' is destructive, 'open' may create and focus a tab, or 'switch' changes the active tab. This is a substantial transparency gap for a tool with mutable behavior.

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 concise with no filler, and the action verbs are front-loaded. However, it is under-specified for a tool with six parameters and multiple action modes; the brevity veers toward incompleteness rather than tight, high-value structure.

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 multi-action, six-parameter tool with no annotations and no output schema, the description is insufficient. It does not specify which parameters are needed per action, what each action returns, or any prerequisites such as an active browser connection, leaving an agent to guess important invocation details.

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, but it adds nothing about url, tab_id, window_id, active, or background. The schema's enum and property names provide some limited guidance, but the description does not explain how actions map to required parameters or how active and background interact.

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 specific verbs—list, open, switch, close, inspect—tied to the tab resource, and the action enum confirms these exact operations. It clearly identifies the tool's scope as tab management, though it does not explicitly contrast itself with nearby siblings like search_tabs.

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 offers no guidance on when to choose this tool over alternatives such as search_tabs, get_page_info, navigate, or windows. There are no explicit when-to-use or when-not-to-use conditions, and no exclusion criteria to help an agent route between sibling tools.

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