Mutable Instruments Shruthi: MIDI CC, NRPN and OSC map¶
The Mutable Instruments Shruthi as named OSC addresses — 39 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Mutable Instruments Shruthi |
|---|---|
| Vendor | Mutable Instruments |
| OSC prefix | /shruthi |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/mutable-instruments/shruthi.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
How do you control it?¶
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/mutable-instruments/shruthi.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as shruthi: ask “what can the Mutable Instruments Shruthi do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (50)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/shruthi/oscillators/oscillator_1_shape |
20 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_1_parameter |
21 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_1_range |
22 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/modulation_operator |
28 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_2_shape |
24 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_2_parameter |
25 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_2_range |
26 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_2_detune |
27 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/oscillator_balance |
29 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/sub_oscillator_volume |
30 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/noise_volume |
31 | 0–127 | continuous | Oscillators | |
/shruthi/oscillators/sub_oscillator_transient_generator_shape |
23 | 0–127 | continuous | Oscillators | |
/shruthi/filter/cutoff |
15 / 74 | 0–16383 | continuous | Filter | |
/shruthi/filter/resonance |
15 / 71 | 0–16383 | continuous | Filter | |
/shruthi/filter/envelope_to_cutoff_modulation_amount |
102 | 0–127 | continuous | Filter | |
/shruthi/filter/lfo_to_cutoff_modulation_amount |
103 | 0–127 | continuous | Filter | |
/shruthi/envelopes/envelope_1_attack |
104 | 0–127 | continuous | Envelopes | |
/shruthi/envelopes/envelope_1_decay |
105 | 0–127 | continuous | Envelopes | |
/shruthi/envelopes/envelope_1_sustain |
106 | 0–127 | continuous | Envelopes | |
/shruthi/envelopes/envelope_1_release |
107 | 0–127 | continuous | Envelopes | |
/shruthi/envelopes/envelope_2_attack |
108 / 73 | 0–16383 | continuous | Envelopes | |
/shruthi/envelopes/envelope_2_decay |
109 | 0–127 | continuous | Envelopes | |
/shruthi/envelopes/envelope_2_sustain |
110 | 0–127 | continuous | Envelopes | |
/shruthi/envelopes/envelope_2_release |
111 | 0–127 | continuous | Envelopes | |
/shruthi/lfo/1_waveform |
112 | 0–127 | continuous | LFO | |
/shruthi/lfo/1_rate |
113 | 0–127 | continuous | LFO | |
/shruthi/lfo/1_rise_time |
114 | 0–127 | continuous | LFO | |
/shruthi/lfo/1_master_slave |
115 | 0–127 | continuous | LFO | |
/shruthi/lfo/2_waveform |
116 | 0–127 | continuous | LFO | |
/shruthi/lfo/2_rate |
117 | 0–127 | continuous | LFO | |
/shruthi/lfo/2_rise_time |
118 | 0–127 | continuous | LFO | |
/shruthi/lfo/2_master_slave |
119 | 0–127 | continuous | LFO | |
/shruthi/modulation/n_source |
continuous | Modulation | |||
/shruthi/modulation/n_destination |
continuous | Modulation | |||
/shruthi/modulation/n_amount |
continuous | Modulation | |||
/shruthi/operators/operator_n_source_1 |
continuous | Operators | |||
/shruthi/operators/operator_n_source_2 |
continuous | Operators | |||
/shruthi/operators/operator_n_operation |
continuous | Operators | |||
/shruthi/sequencer/mode |
75 | 0–127 | continuous | Sequencer | |
/shruthi/general/tempo |
continuous | General | |||
/shruthi/general/groove_template |
76 | 0–127 | continuous | General | |
/shruthi/general/groove_amount |
77 | 0–127 | continuous | General | |
/shruthi/arpeggiator/direction |
78 | 0–127 | continuous | Arpeggiator | |
/shruthi/arpeggiator/range |
79 | 0–127 | continuous | Arpeggiator | |
/shruthi/arpeggiator/pattern |
80 | 0–127 | continuous | Arpeggiator | |
/shruthi/sequencer/clock_division |
81 | 0–127 | continuous | Sequencer | |
/shruthi/general/octave_transposition |
continuous | General | |||
/shruthi/general/scale_raga |
continuous | General | |||
/shruthi/general/portamento |
continuous | General | |||
/shruthi/general/legato |
continuous | General |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /shruthi/note/on <note> <velocity>, /shruthi/cc/<number> <value>, /shruthi/pitchbend <0-16383>, /shruthi/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.