mcp-decent-sampler-drums

dandeliongold/mcp-decent-sampler-drums

3.2

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A Model Context Protocol server for generating Decent Sampler drum kit configurations.

Tools

Functions exposed to the LLM to take actions

configure_drum_controls

Configure global pitch and envelope controls for each drum type.

This tool will:

  • Add per-drum pitch controls with customizable ranges
  • Configure ADSR envelope settings for natural decay control
  • Generate proper XML structure for global drum controls

Error Handling:

  • Validates pitch range values (min/max must be valid numbers)
  • Ensures envelope times are positive values
  • Verifies curve values are within -100 to 100 range
  • Returns detailed error messages for invalid configurations

Success Response: Returns XML structure containing:

  • Global controls for each drum type
  • MIDI CC mappings for real-time control
  • Properly formatted parameter bindings

configure_round_robin

Configure round robin sample playback for a set of samples.

This tool will:

  • Validate sequence positions
  • Verify sample files exist
  • Generate proper XML structure for round robin playback

Error Handling:

  • Checks if sample files exist at specified paths
  • Validates sequence positions are unique and sequential
  • Ensures mode is one of: round_robin, random, true_random, always
  • Returns specific error messages for missing files or invalid sequences

Success Response: Returns XML structure with:

  • Configured playback mode
  • Sample sequence assignments
  • Proper group organization for round robin playback

analyze_wav_samples

Analyze WAV files to detect common issues in drum kit samples.

This tool checks for:

  • Non-standard WAV headers that may cause playback issues
  • Metadata inconsistencies that could affect multi-mic setups
  • Sample rate and bit depth compatibility
  • Channel configuration issues
  • File size and format validation

Error Handling:

  • Reports detailed header format issues
  • Identifies metadata inconsistencies between related samples
  • Flags potential playback compatibility problems
  • Returns specific error messages for each issue type

Success Response: Returns detailed analysis including:

  • WAV header information
  • Sample metadata
  • Potential compatibility issues
  • Recommendations for fixes

IMPORTANT: Always use absolute paths (e.g., 'C:/Users/username/Documents/Samples/kick.wav') rather than relative paths.

configure_mic_routing

Configure multi-mic routing with MIDI controls for drum samples.

This tool will:

  • Set up individual volume controls for each mic position (close, OH L/R, room L/R)
  • Route each mic to its own auxiliary output for DAW mixing
  • Configure MIDI CC mappings for mic volumes
  • Generate proper XML structure for DecentSampler

Error Handling:

  • Validates mic position assignments
  • Checks for duplicate MIDI CC assignments
  • Ensures valid output routing targets
  • Verifies bus indices are unique and valid
  • Returns specific errors for routing conflicts

Success Response: Returns XML structure containing:

  • Configured mic bus routing
  • Volume control mappings
  • MIDI CC assignments
  • Complete routing matrix for all samples

generate_drum_groups

Generate DecentSampler XML for drum kits.

This tool supports two configuration types:

BasicDrumKitConfig:

  • For simple presets with minimal features
  • No UI controls, effects, or routing
  • Only supports basic sample mapping and optional velocity layers
  • Recommended for straightforward drum kits

AdvancedDrumKitConfig:

  • For complex setups combining multiple features
  • Supports UI controls, effects, and routing
  • Integrates with other tools (configure_drum_controls, configure_mic_routing, etc.)
  • Use when you need advanced features like round robin or multi-mic setups

Best Practices:

  • IMPORTANT: Always use absolute paths (e.g., 'C:/Users/username/Documents/Samples/kick.wav')
  • Group all samples for a drum piece into a single group
  • When using multiple mic positions, include them all in the same group
  • Use velocity layers within a group to control dynamics

Error Handling:

  • Validates all sample paths exist
  • Checks for valid MIDI note numbers
  • Ensures velocity layers don't overlap
  • Verifies muting group configurations
  • Returns specific errors for any invalid settings

Example Configurations:

  1. Basic Configuration (simple drum kit): { "globalSettings": { "velocityLayers": [ { "low": 1, "high": 42, "name": "soft" }, { "low": 43, "high": 85, "name": "medium" }, { "low": 86, "high": 127, "name": "hard" } ] }, "drumPieces": [{ "name": "Kick", "rootNote": 36, "samples": [ {"path": "C:/Samples/Kick_Soft.wav"}, {"path": "C:/Samples/Kick_Medium.wav"}, {"path": "C:/Samples/Kick_Hard.wav"} ] }] }

  2. Advanced Configuration (multi-mic kit with controls): { "globalSettings": { "velocityLayers": [ { "low": 1, "high": 127, "name": "full" } ], "drumControls": { "kick": { "pitch": { "default": 0, "min": -12, "max": 12 }, "envelope": { "attack": 0.001, "decay": 0.5, "sustain": 0, "release": 0.1 } } }, "micBuses": [ { "name": "Close Mic", "outputTarget": "MAIN_OUTPUT", "volume": { "default": 0, "midiCC": 20 } } ] }, "drumPieces": [{ "name": "Kick", "rootNote": 36, "samples": [ { "path": "C:/Samples/Kick_Close.wav", "micConfig": { "position": "close", "busIndex": 0 } } ], "muting": { "tags": ["kick"], "silencedByTags": [] } }] }

Success Response: Returns complete XML structure with:

  • Organized sample groups
  • Velocity layer mappings
  • Muting group configurations
  • All sample references and settings
  • Advanced features when using AdvancedDrumKitConfig

Prompts

Interactive templates invoked by user choice

advanced_preset_guidelines

Guidelines for structuring complex Decent Sampler preset files including support for buses, round robin, velocity layers, etc.

simple_preset_guidelines

Guidelines for structuring simple Decent Sampler preset files.

Resources

Contextual data attached and managed by the client

No resources