Update Playlist

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

The description adds ownership requirements beyond annotations (readOnlyHint=false, destructiveHint=false, idempotentHint=true). It also specifies the return value ('Updated playlist object'), which is not covered by 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 extremely concise with a clear front-loaded purpose, followed by a bullet-style parameter list and return statement. Every sentence is necessary and well-structured.

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 update tool with no output schema, the description covers all parameters, ownership, and return value. It leaves no critical gaps, making it fully informative for an agent.

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 coverage is 100%, but the description rephrases constraints (e.g., '2-100 chars' for name) and lists enum values for privacy, adding clarity. It does not fully explain the list_id ownership context beyond the tool-level ownership statement.

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 'Update a playlist you own,' specifying the verb 'update' and resource 'playlist,' and includes an ownership qualifier that distinguishes it from sibling tools like create, delete, or get playlists.

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 when you own a playlist and want to modify it, but lacks explicit guidance on when not to use it or alternatives (e.g., creating a new playlist instead). No sibling tool is mentioned.

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