Preview moving a playlist index

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

The description says 'Preview moving,' which strongly implies a dry-run/read-only operation, but the annotations declare readOnlyHint=false. That is a direct conflict with the preview semantics. No additional behavioral context such as auth requirements or rate limits is provided.

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 filler. It is appropriately concise, though its brevity contributes to gaps documented in other dimensions.

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 three-parameter preview mutation tool with 0% schema description coverage and an output schema, the description omits target-position semantics, playlist context, and preview-versus-commit workflow. It is too under-specified to fully guide invocation.

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 carry parameter meaning. It partially explains 'index' as the item's current index, but it does not explain 'position' or 'playlist_id,' nor does it clarify the relationship between current index and target position.

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 gives a specific verb ('moving') and resource ('item'), qualified by 'identified by its current index.' This implicitly distinguishes it from sibling tools that move by ID or by multiple indices, though it does not explicitly name those alternatives.

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?

There is no guidance on when to use this preview tool instead of the commit action or the by-id/by-indices move siblings. The word 'Preview' hints at a dry-run context, but no when-to-use or when-not-to-use conditions are provided.

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