type_and_submit

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

No annotations are provided, so the description carries the full burden. It states that it types text and presses a key (default Enter), but does not disclose whether it replaces existing text or appends, or what happens after keypress (e.g., form submission, navigation). More behavioral detail would be beneficial.

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?

Two sentences, front-loaded with the action, no redundant information. Every sentence adds value: the first describes the operation, the second provides a use case.

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 5 parameters and no output schema, the description is somewhat incomplete. It does not explain that ref or selector are needed to identify the field, and that tabId is required for context. The agent might miss how to correctly specify the target element.

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 100%, so baseline is 3. The description adds minimal additional meaning beyond the schema, only reinforcing the default key. It does not elaborate on how to use ref versus selector to target the element, which could be helpful.

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 (type text and press a key) and the target (a field), and identifies its use case for search boxes and single-field forms. It effectively distinguishes from sibling tools like type_text (which only types) and fill_form (which handles multiple fields).

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 contextual guidance by noting it's useful for search boxes and single-field forms, implying it should not be used for multi-field forms. However, it does not explicitly mention when not to use it or list alternatives, but the context is sufficient for an agent to differentiate from siblings.

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