Smartest-TV

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

Reveals internal behavior ('stv parses the platform and content ID automatically') but omits error handling, side effects, or prerequisites given no annotations exist to cover these.

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?

Well-structured with Args and Examples sections; front-loaded purpose followed by concrete usage patterns, though 'Paste any streaming URL' slightly redundantly reinforces the initial sentence.

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?

Adequately covers the simple 2-parameter operation; presence of output schema excuses lack of return value documentation, though error scenarios (invalid URL, offline TV) remain unaddressed.

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?

Fully compensates for 0% schema description coverage by explicitly defining both parameters ('Any Netflix, YouTube, or Spotify URL' and 'Target TV name. Omit for default TV').

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 verb ('Cast') and resource ('URL to the TV'), with specific platform examples (Netflix/YouTube/Spotify) that distinguish it from generic siblings like tv_play, though it doesn't explicitly contrast with them.

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?

Provides implicit guidance through examples and notes the default TV behavior, but lacks explicit when-to-use/when-not-to-use guidance versus alternatives like tv_play or tv_launch.

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