Create a playlist

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

No annotations are provided, so the description carries the full burden. It only states the creation action without disclosing permissions, side effects, input validation, or return value. This is insufficient for a mutation tool.

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, front-loaded sentence with no redundant wording. It earns its place by providing the core action and a sourcing hint without waste.

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 create tool with no annotations and no output schema, the description gives enough to initiate a basic creation. However, it omits behavioral details like return object and optional parameter effects, making it partially incomplete for an agent that needs full invocation confidence.

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?

Schema description coverage is only 25%, so the description must compensate. It clarifies that track_ids is an explicit list and suggests search_tracks for sourcing, adding value for the primary parameter. However, it does not explain public or comment parameters beyond the schema, leaving gaps.

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 tool creates a new playlist from an explicit list of track IDs, which distinguishes it from the sibling create_smart_playlist. It also references search_tracks for sourcing, making the purpose unmistakable.

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 explicitly directs users to search_tracks to source track IDs, providing a clear workflow. It implies use when you have specific track IDs, contrasting with smart playlists, but does not explicitly list when-not-to-use cases or alternative tools.

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