tabs

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

With no annotations, the description carries the full burden of behavioral disclosure. It reveals one behavior (bind operates without focus/activation) but remains silent on the side effects, prerequisites, or outcomes of other actions (close, switch, move, transfer, etc.). It does not contradict any annotations since none exist.

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 very brief and front-loads the broad category 'Tab/window ops' before a specific detail about 'bind'. It is concise, but the truncation with an ellipsis suggests the full description may include more content. As presented, it is efficient but structurally minimal.

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 tool with 10 parameters, 1 required, no output schema, and no annotations, this description is severely incomplete. It does not explain the different actions, parameter usage, return values, or error conditions. An agent would need to inspect the schema thoroughly and still lack context for the undocumented parameters. This is far from a usable definition.

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 60%, leaving four parameters (tabId, action, selector, windowId) without any schema-level descriptions. The tool description does not mention any parameters or add meaning beyond the schema. For the uncovered parameters, nothing is provided, so the description fails to compensate for the gap.

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 states the tool handles 'Tab/window ops' and highlights the 'bind' action's specific behavior (routing page ops without focus). This gives a general sense of purpose but does not enumerate the full range of actions (list, switch, close, frames, windows, focus, move, transfer, switchread). It differentiates itself from some siblings by mentioning 'bind' but not clearly against all overlapping tools like real_activate_tab.

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 that page ops never need activation, which hints that for such operations you may not need to use tab activation tools, but it does not explicitly state when to use this tool vs alternatives like real_activate_tab or session. No exclusions or explicit conditions for each action are provided.

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