transport_play

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

With no annotations provided, the description carries the full behavioral burden. It states the primary action but does not disclose what happens if playback is already active, whether the cursor is moved, or how this differs from a play/stop toggle like raw_play_stop. This leaves meaningful ambiguity.

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 eight-word sentence that is front-loaded and contains zero filler. For a command of this simplicity, every word earns its place.

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 tool with no output schema, the core invocation is adequately described. However, the absence of usage guidance and edge-case behavior leaves the description incomplete for an agent choosing among many playback-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?

The tool has zero parameters and schema coverage is effectively 100%, so the 0-params baseline of 4 applies. No parameter explanation is needed or possible.

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 states a specific verb ('Start'), resource ('playback'), and scope ('from the current cursor position'), clearly conveying what the tool does. The cursor-position qualifier implicitly differentiates it from transport_play_region, though it does not explicitly name or distinguish any sibling.

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 given on when to use this tool versus closely related playback siblings such as transport_play_region, raw_play_stop, transport_pause, or transport_record. An agent must infer usage context entirely from the name and the minimal description, with no exclusions or alternative routing.

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