find_and_tap

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

Describes the steps (dump, find partial case-insensitive, tap center) but does not mention failure cases like no element found or multiple matches. With no annotations, more detail on edge cases would improve transparency.

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?

Concise, front-loaded with purpose, followed by explanation and parameter details. No wasted sentences.

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 is simple with one parameter and output schema exists, the description covers the main functionality. Missing details on return value or error behavior, but adequate for a straightforward tool.

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 has no description (0% coverage), but the description fully explains the parameter 'text': partial match, case-insensitive, adds meaning beyond the schema.

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 finds a UI element by text and taps it, explaining it combines dump_ui and tap_screen. This is a specific verb+resource and distinguishes from sibling tools.

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 combined find-and-tap action, mentioning it combines dump_ui and tap_screen. Lacks explicit when-not or alternatives, but gives clear context.

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