mcp_opendaw_create_garage_arrangement

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

With no annotations, the description must carry the behavioral burden. It does disclose the output structure (4 tracks with offsets), musical patterns, and default key. However, it omits important operational behavior such as whether existing notes on those tracks are overwritten, whether new tracks are created automatically, or how the tool interacts with the current project state. This leaves meaningful gaps in predicting side effects.

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 well-structured with a clear lead sentence, a bulleted genre overview, and a numbered track breakdown. It is a bit longer than necessary due to genre background (e.g., 'smooth, bumping, after-hours energy'), but the structure makes it scannable and the content is largely pertinent to understanding the tool's musical output.

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?

This is a complex tool that generates a full 4-track arrangement, and the description covers the musical essence well—track roles, rhythmic patterns, voicings. However, it leaves out several parameter behaviors (bars, velocity, start_beat, unit_index) and does not mention any operational constraints or side effects. Given the complexity and lack of annotations, the description is adequate but not fully complete.

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 0% coverage (no parameter descriptions), so the description must compensate. It provides some meaning for bpm (default 130 and genre-typical 130-138), key_root (default G minor), and track_index (used to place the 4 tracks). But it does not explain bars, velocity, start_beat, or unit_index, which are all essential for controlling the arrangement. This partial coverage earns a mid-level score.

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: 'Create a UK garage arrangement', and elaborates with genre-defining characteristics and a breakdown of the 4 tracks created. This clearly distinguishes it from sibling tools like create_house_arrangement or create_trap_arrangement by explicitly naming the genre and its signature patterns.

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 establishes clear context for when to use the tool—when a UK garage arrangement is requested—and educates the agent on genre specifics (2-step, swing, BPM range, track layout). However, it does not explicitly name alternatives or state when not to use it, leaving some inference to the agent based on the tool name and sibling context.

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