execute_script

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

The description only mentions execution and return of a JSON-serializable result, but fails to disclose error handling, async behavior, security restrictions, or what happens with non-serializable returns. Given no annotations, the description carries the full burden and is insufficient.

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 concise sentence. It is front-loaded and wastes no words, but could be slightly expanded for clarity without losing conciseness.

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?

Despite an output schema, the description lacks completeness for a powerful tool. No details on error states, return format beyond 'JSON-serializable', or execution context. The tool's complexity demands more context to ensure correct usage.

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 description does not explain the 'args' parameter beyond the schema. With 0% schema description coverage, the description should compensate but does not. It only implies 'script' is code, but adds no detail about how 'args' is used or how parameters 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 clearly states it executes JavaScript and returns a JSON-serializable result, specifying both the action and the resource. This distinguishes it from sibling tools that perform specific browser actions like clicking or navigating.

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 is provided on when to use this tool versus alternatives. The description does not mention prerequisites, appropriate scenarios, or what to avoid, leaving the agent without context for decision making.

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