Update playlist

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

Annotations already indicate destructiveHint=true, idempotentHint=true, and readOnlyHint=false. The description adds behavioral context by listing the specific mutations (e.g., replacing tracklist confirms destructive behavior). It does not mention authorization needs but adds value beyond annotations.

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 sentence listing all possible updates. It is concise with no unnecessary words, and every part contributes to understanding the tool's functionality.

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 covers the core actions of the tool but does not mention the return value (e.g., updated playlist object). Given the absence of an output schema, this omission is a minor gap. The tool is fairly simple, so it is mostly complete.

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 input schema has 0% description coverage, so the description must compensate. It maps 'rename' to title, 'redescribe' to description, 'change sharing' to sharing, and 'replace tracklist' to trackIds. However, the required playlistId parameter is not explained, leaving semantic 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 updates a playlist by renaming, redescribing, changing sharing, or replacing the tracklist, which are specific actions. It distinguishes itself from siblings like add_tracks_to_playlist (which adds, not replaces) and delete_playlist.

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 implies usage for updating playlist attributes, but it does not explicitly state when to use this tool over alternatives such as add_tracks_to_playlist for adding tracks. No when-not-to-use guidance is provided.

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