replay_session

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

With no annotations provided, the description carries the full burden of explaining side effects and behavior. It only states the high-level action and modes; it does not disclose whether queueing replaces the current queue, whether playlist creation has side effects, whether dry_run prevents all mutations, or what the response looks like. This is a meaningful gap for a tool that can mutate playback or create playlists.

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 efficient sentence that front-loads the core operation and then names the two modes. There is no filler or redundant wording.

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 tool has four parameters, no output schema, no annotations, and side-effect potential, so a richer description is needed. The current text explains the basic purpose but omits behavior around queue replacement, playlist creation details, dry_run effects, and relationship to session-related siblings.

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 schema already documents all four parameters. The description adds some context by tying mode to 'queue its tracks or create a playlist', but it does not go beyond what the schema already states about dry_run or response_format.

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 names a specific action ('Replay') and a specific resource ('a tagged listening session'), then clarifies the two modes: queueing tracks or creating a playlist. It is clear enough to identify what the tool does, though it does not explicitly distinguish itself from sibling tools like list_sessions or queue_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 a use case (replaying a tagged listening session) but gives no explicit guidance on when to choose this tool over alternatives, no prerequisites, and no exclusions. For example, it does not mention that a sessions must already be tagged via tag_listening_session or that other queue/playlist tools exist.

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