spotify_toggle_shuffle

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

With no annotations, the description bears full responsibility for behavioral disclosure. It mentions the requirement of a Premium subscription but fails to describe side effects, idempotency, or any impact on current playback.

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?

The description is extremely concise: two short sentences. It front-loads the core action and adds the single prerequisite. No unnecessary information.

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?

For a simple boolean toggle, the description explains the purpose and a requirement. However, it omits parameter semantics and lacks any usage context. Given the lack of annotations and parameter descriptions, it is minimally adequate but has clear gaps.

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?

The input schema has a single boolean parameter 'state' with no description. The description does not explain how this parameter maps to the action, leaving the agent to infer 'on' and 'off' from context. Schema coverage is 0%, and the description provides no additional meaning.

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 'Turn shuffle on or off' clearly states the verb and resource. It directly conveys the tool's purpose and distinguishes it from siblings like spotify_smart_shuffle which implies an intelligent mode.

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 no guidance on when to use this tool vs alternative shuffle controls or playback tools. It only states a prerequisite (Premium) but offers no context for decision-making.

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