audio_focus_previous_playlist

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

Without annotations, the description must fully describe behavior, but it only states the action without explaining what 'focus' entails (e.g., whether it changes state, is reversible, or has side effects). The behavioral implications are unclear.

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 a single concise sentence. It is front-loaded with the action, but it might be too terse for full clarity.

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 simplicity of the tool (no params, no output schema) and the large number of siblings, a minimal description might be sufficient but misses opportunities to add context. More detail about the tool's role would improve completeness.

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?

There are no parameters, so the schema coverage is 100%. The description adds no additional meaning beyond the name, but for zero-parameter tools, this is acceptable. Baseline of 4 applies.

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 'Focus the previous audio playlist' clearly states the verb (Focus) and the resource (previous audio playlist). However, it does not differentiate from siblings like audio_focus_next_playlist or audio_focus_active_playlist, which have very similar names and purposes.

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?

No guidance is provided on when to use this tool versus alternatives such as audio_focus_next_playlist or audio_focus_playlist. The description lacks context about prerequisites or typical scenarios.

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