create_player_playback_stop

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

The description adds no behavioral context beyond the structured annotations. It does not state what stopping the player means (e.g., ending playback versus pausing), whether a session is terminated, or any side effects; the openWorldHint and idempotentHint are already supplied by annotations and not elaborated.

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 short, but the first line 'Player Stop.' is redundant with the tool name and serves little purpose beyond the useful endpoint line. It is concise almost to the point of under-specification rather than intentionally focused.

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 zero-parameter command with an output schema and safety annotations, the description is minimally usable: an agent knows the endpoint and the action. However, it omits any explanation of the effect of stopping playback, such as whether it releases resources or only changes player state, and gives no hint of when this command is preferred over pause or other playback controls.

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?

The input schema has no properties, so there are no parameter semantics to document. The description mentions the endpoint but not parameters; this is consistent with the zero-parameter schema, and the baseline of 4 applies.

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 'Player Stop.' plus the endpoint POST /player/playback/stop communicates the basic action of stopping playback, but it is essentially a restatement of the tool name and does not explain the operation in a complete sentence. It is clear enough, but not differentiated from sibling playback-control tools.

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 provided about when to use this tool versus the many sibling tools such as create_player_playback_pause, create_player_playback_seek, or create_player_playback_set_state. The agent is left to infer the intended use from the name and endpoint alone.

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