Skip to main content
Glama

mcp_opendaw_create_sequence

Creates a melodic sequence by repeating a pattern at transposed pitch levels, with control over transposition, repeats, direction, and velocity.

Instructions

Create a melodic sequence — repeat a pattern at transposed pitch levels.

The most fundamental compositional technique in Western music: take a melodic fragment, repeat it at a different pitch (usually up/down a 4th or 5th). Think baroque sequences (Pachelbel), jazz ii-V-I chains, film score ascending quint sequences, or EDM build-ups with rising motifs.

pattern: Comma-separated MIDI pitches (e.g. "60,62,64,67"). transposition: Semitones to shift each repeat (default 5 = perfect 4th up). Common: 5 (4th), 7 (5th), 2 (major 2nd), -2 (down), -5 (4th down). repeats: Number of transposed repetitions (1-8, default 3). direction: "up" (transpose up), "down" (transpose down), "alternating" (up/down/up...). segment_beats: Duration of each pattern repetition in beats (0.5-16, default 2). velocity_decay: Velocity change per repeat (-0.3 to 0.3). Positive = louder, negative = quieter (fade-out). 0 = constant. unit_index: AU index with note track (-1 = find first AU with note tracks). track_index: Note track index within the AU. start_beat: Position in beats where the sequence begins. velocity: Base velocity 0-1 (default 0.8).

Returns notes created, repeat count, total transposition.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
patternNo60,62,64,60
repeatsNo
velocityNo
directionNoup
start_beatNo
unit_indexNo
track_indexNo
segment_beatsNo
transpositionNo
velocity_decayNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

With no annotations, the description carries full burden. It explains the core behavior (creating repeated transposed notes) and mentions the return values. However, it does not disclose whether the operation is destructive (e.g., overwrites existing notes) or requires specific track types, leaving some behavioral ambiguity.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with a clear opening statement followed by detailed parameter descriptions. It is somewhat lengthy but every sentence adds value. A few parameter descriptions could be slightly more terse without losing clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's 10 parameters and moderate complexity, the description covers each parameter thoroughly and explains the return value. It lacks explicit information about prerequisites or side effects, but is largely complete for a creation tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, but the description adds extensive meaning to each parameter: pattern format, transposition ranges and common values, direction options, velocity decay range, etc. This far exceeds the schema's minimal titles and defaults, providing crucial guidance.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly defines the tool as creating a melodic sequence by repeating a pattern at transposed pitch levels. It uses specific verbs ('create', 'repeat', 'transpose') and resource ('melodic sequence'), and distinguishes this from sibling tools by focusing on a fundamental compositional technique with concrete examples.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides context on when to use the tool, citing musical examples (Pachelbel, jazz ii-V-I, film scores, EDM build-ups) and common transposition values. However, it does not explicitly state when not to use it or mention alternative tools among siblings, but the context is sufficiently clear.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/AMEOBIUS-team/opendaw-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server