extract_content

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

Discloses that the tool opens a tab, extracts visible text and page counts, then closes the tab. This reveals the lifecycle. However, it does not mention failure handling, permissions, or side effects. With no annotations, the description partly carries the burden.

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?

One sentence, clear and direct, with no wasted words. The structure is front-loaded with the action.

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 4 parameters, no output schema, and no annotations, the description is incomplete. It does not explain the return format (text and page counts), parameter defaults, or error conditions. A more detailed description would be needed for comprehensive understanding.

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%; the description only adds meaning for 'url' (the page to open) but does not explain 'host', 'port', or 'wait_ms' parameters. For a 4-parameter tool, this is insufficient.

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 verb (open, extract, close), the resource (URL page via CDP), and the outcome (visible text and basic page counts). It distinguishes this tool from siblings by specifying the lifecycle and extraction method.

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 tool versus alternatives like 'navigate_and_read' or 'open_in_browser'. The description does not mention when not to use it or prerequisites.

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