mcp_opendaw_get_region_info

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

Annotations declare readOnlyHint=true, and the description aligns with this by stating it 'gets' information. It adds value beyond the annotation by disclosing what the response includes: position, duration, loop, mute, content, and type-specific metadata such as notes count, audio file, and automation events. No contradiction with annotations.

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 and front-loaded: a clear one-line summary, three short parameter definitions, and a one-line description of return content. Every sentence serves a purpose, with no redundant or filler text.

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 description covers the tool's purpose, all three parameters, and the general shape of the return value. Since an output schema exists, it does not need to enumerate every field. It is sufficient for an agent to select and invoke this tool correctly, though it could mention error/edge-case behavior for extra completeness.

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 no descriptions (0% coverage), but the description fully compensates by defining each parameter: unit_index as AU index, track_index as track within the AU, and region_index as region index. This clarifies the hierarchical addressing scheme, which the bare schema names do not convey.

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 a specific verb+resource: 'Get detailed info about a single region' and enumerates the exact fields returned (position, duration, loop, mute, content). This clearly distinguishes it from sibling list operations (e.g., list_note_regions) and mutation tools (e.g., set_region_duration).

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 appropriate use case—when you need detailed information about one specific region—but does not explicitly state when not to use it or mention alternatives like list_note_regions or get_region_play_mode. It provides no exclusions or comparative guidance, so it meets only the 'implied usage' level.

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