spotify-mcp

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

With no annotations provided, the description carries the full disclosure burden. It successfully communicates the Premium authentication requirement but omits other behavioral details such as whether changes apply to the active device immediately, impact on the current queue, or idempotency characteristics.

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 consists of two efficient sentences with zero redundancy. The action is front-loaded in the first sentence, while the critical Premium requirement follows immediately, respecting the agent's need for rapid comprehension.

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's low complexity (single boolean parameter) and the existence of an output schema, the description covers the essential operational context. It appropriately omits return value details (covered by output schema) but could benefit from noting device-scoping behavior.

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 schema has 0% description coverage for the 'state' boolean parameter. The description compensates effectively by mapping the abstract boolean to concrete semantic values ('on or off'), clarifying the parameter's purpose despite the schema's lack of documentation.

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 clearly states the specific action (Turn) and target resource (shuffle) with scope (on/off). However, it does not explicitly differentiate from the sibling tool 'spotify_smart_shuffle', which could cause confusion between standard shuffle and smart shuffle modes.

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 one key usage constraint ('Requires Premium'), which functions as a prerequisite check. However, it lacks explicit guidance on when to use this versus 'spotify_smart_shuffle' or other playback control tools, and does not specify device targeting requirements.

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