transport_play

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

No annotations exist, so the description carries the full burden. It does disclose the key toggle behavior ('Start or toggle playback') and references the Play button, which helps. But it does not mention side effects, whether playback position resets, or behavior during recording.

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, compact sentence that states the action, includes the toggle nuance, and anchors to the familiar FL Studio Play button. No wasted words.

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 parameterless transport action, the description is essentially complete. The only minor gap is not explaining what happens when playback is already active, though 'toggle' already implies this.

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 tool has zero parameters and the schema confirms this with 100% coverage. There is nothing a description could add about parameter meaning; baseline 4 is appropriate.

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?

Description uses a specific verb ('Start or toggle') and a clear resource ('playback', FL Studio's Play button). It is immediately distinguishable from sibling tools like transport_stop and transport_record.

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 the tool is for starting or toggling playback, and sibling names suggest transport_stop is the explicit stop alternative. However, there is no explicit guidance about when to use this versus transport_stop or how toggle behavior interacts with existing playback state.

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