mcp_opendaw_set_loop_region

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It explains the basic behavior: enabling/disabling the loop and the meaning of from_beat and to_beat. It does not mention side effects like immediate application to playback or any destructive actions, but for a simple set operation this is adequate. The transparency is good for a non-destructive parameter change.

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 concise: two short paragraphs. The first paragraph states the purpose and basic behavior. The second lists the parameters with one-line explanations. No redundant words. Every sentence adds value, making it easy to scan quickly.

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 3 required parameters, all explained. The behavior is simple: set loop region with enable/disable. There is an output schema (not shown) which presumably documents the return value. Given the tool's simplicity, the description covers all necessary information for an agent to use it correctly. No missing aspects identified.

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 3 parameters with only titles, and schema description coverage is 0%. The description fully compensates by explaining each parameter: 'from_beat: Loop start in beats.', 'to_beat: Loop end in beats.', 'enabled: Whether loop is active.' This adds the exact meaning needed for correct invocation.

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 tool's purpose: 'Set the playback loop region.' It explains that playback loops between from_beat and to_beat when enabled. This distinguishes it from sibling tools like set_region_* or transport controls. The verb 'Set' combined with the resource 'loop region' makes the action unambiguous.

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 provides clear guidance on when to use the tool: to define a loop region. It explicitly explains how to disable the loop by setting enabled=false, stating the behavior that the region is kept but inactive. While it doesn't explicitly list alternatives, the context of DAW tools implies the user would know when looping is needed. The simple use case is well-covered.

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