play_source_monitor

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

No annotations are provided, so the description carries the full burden. It simply says 'play source monitor' without disclosing behavioral aspects: Does it start playback toggling or just initiate? Does it require an open source clip? Does it affect the playhead position? No mention of side effects, preconditions, or what actions it performs beyond the verb 'play'.

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 concise: 'Premiere Pro expanded operation: play source monitor.' It front-loads the product context and states the verb. While sparse, it is not verbose or wasteful. However, given the lack of additional content, it might border on under-specification, but for a zero-parameter tool, this is acceptable.

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 no output schema, no annotations, and no parameters, so the description is the sole source of context. For a playback operation, an agent needs to know whether this toggles playback or initializes it, and whether it requires an active source monitor. The description fails to provide this context that would be found in richer sibling descriptions like get_source_monitor_info.

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 zero parameters and 100% schema description coverage, so there is nothing to add. The description correctly indicates no parameters are needed for this action, which is sufficient. A baseline 4 is appropriate given the tool requires no input.

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 clearly states the action: 'play source monitor' in Premiere Pro. It identifies the tool as an expanded operation for playing the source monitor, which aligns with sibling tools like play_timeline and get_source_monitor_info. However, it could better distinguish itself from similar playback tools by specifying what 'source monitor' means in this context.

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 tool implies usage context (playing the source monitor), but lacks explicit guidance on when to use it versus alternatives like play_timeline or stop_playback. No when-not-to-use or alternative tool references are provided, which would help an agent choose correctly among the many sibling playback controls.

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