call_antigravity_verifier

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

With no annotations, the description carries the full behavioral burden and falls short: it doesn't say whether this executes a shell command, whether it is blocking, what permissions or environment it needs, or how the visual regression component behaves. It only gives a high-level purpose.

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 single sentence is compact and front-loads the core action, but the 'Symmetrical tool:' fragment is unexplained noise and the brevity comes at the cost of under-specification rather than efficiency.

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?

Even though an output schema exists (so return values needn't be described), the definition is incomplete for a 2-param verification tool: 0% schema coverage, no annotations, no usage guidance, and no differentiation from the near-identical sibling.

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 0%, so the description must compensate, but it only loosely maps to the params (terminal → test_command, visual → ui_url). It gives no format, syntax, or meaning for test_command and no explanation of what ui_url expects or when to supply it.

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 names a specific action and resource: 'Request Antigravity terminal verification and visual regression checks.' An agent can tell it runs verification and visual checks, but it does not distinguish this from the sibling antigravity_verify_and_screenshot, which sounds nearly identical. The 'Symmetrical tool' preamble adds no clarifying power.

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?

No guidance on when to use this vs antigravity_verify_and_screenshot or call_antigravity_multimodal, and no exclusions or prerequisites. The word 'Symmetrical' hints at a counterpart but never names or explains the distinction, leaving routing entirely to inference.

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