restore_playlist_plan

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

With no annotations, the description carries the full burden of behavioral disclosure, and it does so well: 'Read-only' and 'never mutates' clearly rule out side effects, while 'exactly which tracks would be added/removed' states what the plan covers. It does not discuss permissions, rate limits, or return details, but for a read-only planning tool the key behavioral risk is mutation, which is explicitly denied.

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?

A single front-loaded sentence that states the core purpose and the critical non-mutation guarantee in under twenty words. The slight redundancy between 'Read-only' and 'never mutates' reinforces the key safety property without bloating the description.

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?

Given no output schema and no annotations, the description adequately explains what the tool returns: a plan of exact additions/removals to reconcile a live playlist with a snapshot. The response_format enum fills in how the plan is presented, and the optional playlists default is documented in the schema, so nothing essential 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 100%, so the baseline applies: the schema already documents snapshot, playlist, and response_format. The description adds no new parameter-level meaning beyond framing the playlist as live and the snapshot as the desired state, which is helpful but not necessary.

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?

States a precise read-only action: planning exactly which tracks would be added or removed to make a live playlist match a snapshot. The phrase 'never mutates' clearly separates it from mutation tools like restore_playlist_from_snapshot.

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 use when the caller wants a preview before any mutation, but it does not explicitly name an alternative such as restore_playlist_from_snapshot or apply_snapshot_changes. 'Never mutates' provides a useful contrast, but it stops short of explicit when-to-use vs when-to-use-something-else guidance.

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