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spotify_transfer_playback

Transfer playback to a different device. Provide the target device ID to switch your music. Requires Spotify Premium.

Instructions

Transfer playback to a different device. Requires Premium.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
device_idYes
force_playNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description must disclose all behavioral traits. It only notes the Premium requirement and fails to explain effects like stopping current playback, starting on new device, or error handling for invalid device_id.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very concise with two sentences, no redundant information. It could be slightly expanded without losing conciseness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the lack of annotations and minimal description, the tool definition is incomplete. It does not cover return values, error states, or detailed behavior, though an output schema exists.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, but the description provides no explanation for device_id or force_play. The names alone are insufficient for an agent to correctly use the tool.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it transfers playback to a different device, distinguishing it from siblings like play, pause, or get_devices. However, it could be more precise about stopping current device playback.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description mentions 'Requires Premium' as a prerequisite, but does not provide explicit guidance on when to use this tool versus alternatives like play or resume. Usage is implied but not clarified.

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

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