devices/korg/kronos.electra-community-polysixex-v2.fw-unknown.jsonEdit on GitHubJSONKorg Kronos MIDI CC chart, NRPN and OSC map
The Korg Kronos MIDI implementation: 40 SysEx commands, each named, for Claude (MCP), SuperCollider or any OSC app.
- sourceElectra One preset
- real unitnot yet checked
Not checked on a real Korg Kronos yet. Own one? Load a sound or send a control, and tell us whether it worked.
- Maker
- Korg
- Version
- per Electra preset
- Source
- Electra One preset
- OSC prefix
/kronos
Use 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/korg/kronos.electra-community-polysixex-v2.fw-unknown.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 kronos: ask “what can the Korg Kronos do?” and it reads this map with list_routes. See the MCP guide.
MIDI controls
40 controls, each with its number, its range and the name to send
SysEx commands
| Command | Arguments | Name to send |
|---|---|---|
| Local control | val: u7 | /kronos/local_control |
| Scene 1 | val: u7 | /kronos/scene_1 |
| Scene 2 | val: u7 | /kronos/scene_2 |
| Scene 3 | val: u7 | /kronos/scene_3 |
| Scene 4 | val: u7 | /kronos/scene_4 |
| Karma on off | val: u7 | /kronos/karma_on_off |
| Latch | val: u7 | /kronos/latch |
| Scene 5 | val: u7 | /kronos/scene_5 |
| Scene 6 | val: u7 | /kronos/scene_6 |
| Scene 7 | val: u7 | /kronos/scene_7 |
| Scene 8 | val: u7 | /kronos/scene_8 |
| On off | val: u7 | /kronos/on_off |
| Vibrato int | val: u7 | /kronos/vibrato_int |
| Octave | val: u7 | /kronos/octave |
| Waveform | val: u7 | /kronos/waveform |
| Pw pwm | val: u7 | /kronos/pw_pwm |
| Pwm speed | val: u7 | /kronos/pwm_speed |
| Sub osc | val: u7 | /kronos/sub_osc |
| Freq times | val: u7 | /kronos/freq_times |
| Delay | val: u7 | /kronos/delay |
| Level | val: u7 | /kronos/level |
| Mode | val: u7 | /kronos/mode |
| Cutoff | val: u7 | /kronos/cutoff |
| Resonance | val: u7 | /kronos/resonance |
| Switch 1 | val: u7 | /kronos/switch_1 |
| Switch 2 | val: u7 | /kronos/switch_2 |
| Switch 3 | val: u7 | /kronos/switch_3 |
| Switch 4 | val: u7 | /kronos/switch_4 |
| Switch 5 | val: u7 | /kronos/switch_5 |
| Switch 6 | val: u7 | /kronos/switch_6 |
| Switch 7 | val: u7 | /kronos/switch_7 |
| Switch 8 | val: u7 | /kronos/switch_8 |
| Fader 1 | val: u7 | /kronos/fader_1 |
| Fader 2 | val: u7 | /kronos/fader_2 |
| Fader 3 | val: u7 | /kronos/fader_3 |
| Fader 4 | val: u7 | /kronos/fader_4 |
| Fader 5 | val: u7 | /kronos/fader_5 |
| Fader 6 | val: u7 | /kronos/fader_6 |
| Fader 7 | val: u7 | /kronos/fader_7 |
| Fader 8 | val: u7 | /kronos/fader_8 |
Performance MIDI
Notes, pitch bend and any CC are also available: /kronos/note/on <note> <velocity>, /kronos/cc/<number> <value>, /kronos/pitchbend <0-16383>, /kronos/program_change <n>.
Limitations
Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.
Frequently asked questions
Can an AI agent like Claude control the Korg Kronos?
Yes: SynthHub's hosted MCP server knows the Korg Kronos's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.