launch_firefox_multi

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 mentions 'multi-tab support and debugging' but fails to explain what this entails operationally—such as whether it starts a new browser instance, how tabs are managed, what debugging features are enabled, or potential side effects. This leaves significant gaps for an agent to understand the tool's 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 a single, efficient sentence with no wasted words, clearly front-loading the core functionality. Every part of the sentence contributes directly to understanding the tool's purpose.

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 tool's complexity (launching a browser with debugging features), lack of annotations, and no output schema, the description is insufficient. It omits critical details like return values, error conditions, how multi-tab support works, and what 'debugging' entails, making it incomplete for effective agent use.

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?

The schema description coverage is 0%, so the description must compensate for the undocumented parameters. It mentions 'debugging', which loosely relates to 'enableDebugLogging', but doesn't explain what 'multi-tab support' means in terms of parameters or how 'headless' mode affects the launch. The description adds minimal semantic context beyond the schema, warranting a baseline score.

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 clearly states the action ('Launch Firefox browser') and key capabilities ('with multi-tab support and debugging'), providing a specific verb+resource combination. However, it doesn't explicitly differentiate from sibling tools like 'create_tab' or 'navigate', which prevents a perfect score.

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 provides no guidance on when to use this tool versus alternatives like 'create_tab' or 'navigate', nor does it mention prerequisites or exclusions. It merely states what the tool does without contextual usage information.

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