transport_play

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

Annotations only declare readOnlyHint=false and destructiveHint=false. The description adds a useful behavioral nuance by indicating the tool can either plan or start playback, which goes slightly beyond the raw annotation flags, but it does not explain confirmation-token lifecycle or effects on current transport state.

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 front-loaded sentence with no filler. It efficiently captures the resource and both execution modes, making every word earn 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 four-parameter tool with a two-phase dry-run/confirm flow and no output schema, the description is too thin. It does not mention the need to obtain expectedStateVersion, use a confirmationToken after planning, or understand what the plan versus start outcomes are.

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 coverage is 100%, so the baseline is 3. The phrase 'Plan or start' loosely maps to dryRun and confirmationToken behavior, but the description itself provides no parameter-level detail beyond what the schema already states.

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 uses a concrete verb phrase, 'Plan or start Ableton transport playback', clearly naming the resource and the two main modes of operation. It is clear but does not explicitly differentiate itself from sibling tools such as transport_stop or set_transport_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?

No guidance is given on when to use this tool versus alternatives like transport_stop, set_transport_context, or stop_all_clips. The description does not state prerequisites or exclusions, leaving the dry-run/confirmation workflow entirely implicit.

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