send_keys

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

No annotations; description mentions optional selector and key examples but lacks details on failure behavior, focus changes, or side effects.

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 efficient sentences with front-loaded purpose and immediate examples; no wasted words.

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?

Covers core action and optional selector but omits parameter details for 'by' and 'timeout', and lacks return/error behavior given no output schema.

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?

Adds example key names and combos beyond schema, but does not document 'by' or 'timeout' parameters, leaving half of parameters unexplained.

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?

Clearly states it sends a key or key combination to a focused or specified element. Distinguishes from siblings like click and type_text by focusing on keyboard shortcuts and single key actions.

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?

Implies usage for keyboard shortcuts and combos via examples, but does not explicitly contrast with type_text for text input or clarify exclusive scenarios.

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