app_launch

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

No annotations provided, so description carries full burden. States only the action intent without disclosing execution semantics (async vs sync, error behavior, window management, or privilege requirements).

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?

Extremely terse at 6 words. Front-loaded with action verb. Efficient but arguably too lean given the lack of annotations and behavioral disclosure.

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?

Minimal viable documentation for a single-parameter tool. Lacks coverage of execution side effects and error states that would be expected given zero annotation coverage and 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?

Schema coverage is 100% with the parameter fully described via examples. Description adds no additional parameter context beyond what the schema provides, which warrants the baseline score.

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?

Clear specific verb ('Launch') and resource ('desktop application'), with mechanism clarification ('by name'). Distinguishes implicitly from sibling file/clipboard/notification tools, though lacks explicit differentiation.

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 versus alternatives, error handling, or prerequisites. Fails to mention that the application must be installed/available or what happens if the name is invalid.

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