mcp_opendaw_flatten_note_regions

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

The description discloses a key destructive behavior: 'The original regions are deleted and replaced by a single flattened region.' This goes beyond the schema and annotations (which are absent). It also states the return value ('Returns the new flattened region info, or error'), which sets expectations. It doesn't mention undo/reversibility or edge cases, but the core behavioral trait is covered.

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 compact at roughly 70 words, with a clear breakdown of purpose, behavior, and parameters. There is a slight redundancy between the first sentence and the second paragraph ('Flatten...into a single region' vs. 'Merges...into one'), which loses a point. Otherwise, each section 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?

Given the complexity of a destructive merge operation, the description covers the transformation, the side effect of deleting originals, the required parameters, and the return value. Since an output schema exists, it doesn't need to detail the return structure. It could mention the 'overlapping' precondition more prominently, but overall it is sufficient for an agent to invoke correctly.

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 description coverage is 0%, but the description compensates by defining each parameter: 'unit_index: AU index,' 'track_index: Track index within the AU,' and 'region_indices: Comma-separated region indices to flatten (e.g. "0,1,2").' This provides meaningful semantics and an example for the trickiest parameter. All three required parameters are explicitly explained.

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 opens with 'Flatten (merge) multiple overlapping note regions into a single region,' which is a specific verb+resource action. It further clarifies behavior by noting original regions are deleted and replaced. It doesn't explicitly distinguish from the sibling 'mcp_opendaw_merge_note_regions,' but the term 'flatten' and the detail about overlapping regions provide a clear purpose.

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 clearly states this is for merging selected note regions on the same track, which tells an agent when to invoke it. It gives no explicit when-not-to-use or alternatives, but the context is unambiguous for a merge operation. The parameter list reinforces the required inputs.

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