spotify_set_repeat

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

With no annotations, the description only states it requires Premium. It does not disclose other behavioral traits such as whether an active device or playback is needed, or if it silently fails without playback. This is adequate but could be improved.

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?

Two short sentences, front-loaded with the action word 'Set'. Every word adds value; no redundancy.

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?

The description is minimal but sufficient for a simple one-parameter tool. It could mention that it changes the repeat mode of the current playback or requires an active device, but it remains functional as is.

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% coverage and no enum; the description compensates by listing the three valid states (off, context, track). However, it does not explain what each state means, which would be helpful.

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 verb 'Set' and the resource 'repeat mode', and lists the three possible values: off, context, or track. This distinguishes it from sibling tools like toggle_shuffle or seek.

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?

It explicitly mentions 'Requires Premium', which is a key prerequisite. While it doesn't contrast with alternatives, the short list of repeat modes and the requirement provide adequate context for when to use this tool.

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