Edit Playlist Details

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

Annotations already indicate a mutation (readOnlyHint=false), idempotence, and destructiveness. The description adds no behavioral context beyond 'Modify' – it does not explain that existing values will be overwritten, what happens if parameters are null, or any side effects like visibility changes. It neither contradicts the annotations nor supplements them meaningfully.

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 brief and front-loaded with a clear summary, which is good. However, the Args list largely duplicates the input schema, so the added structural value is low. It is appropriately sized but not as economical as it could be if it replaced repetition with substantive guidance.

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 mutation tool with destructiveHint=true, the lack of detail about null semantics, overwrite behavior, and side effects leaves the definition incomplete. An agent could incorrectly assume that passing null clears a field or that all optional fields require explicit values. The output schema exists, so return-value documentation is not needed, but operational context is missing.

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 0%, so the description must compensate. It rephrases schema titles ('New playlist name', 'Whether playlist should be public') but adds almost no new meaning. It fails to explain the critical null-default semantics: whether null means 'leave unchanged' or 'clear the field'. This ambiguity is central to correct invocation.

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 states a concrete verb and resource: 'Modify playlist details.' It clearly distinguishes this from sibling tools that handle track management (add/remove/reorder) or retrieval, though it doesn't explicitly name a sibling. It is not a tautology and leaves little ambiguity about the operation.

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 given about when to use this tool versus alternatives like create_playlist, reorder_playlist, or unfollow_playlist. The description simply states the action without explaining prerequisites, exclusions, or contexts where another tool would be more appropriate.

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