VCV Rack 2 v2.1.5 MIDI CC chart, NRPN and OSC map¶
The VCV Rack 2 v2.1.5 MIDI implementation: 1 CC, 1 NRPN, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | VCV Rack 2 v2.1.5 |
|---|---|
| Vendor | VCV Rack |
| OSC prefix | /vcv_rack_2_v2_1_5 |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/vcv-rack/vcv_rack_2_v2_1_5.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/vcv-rack/vcv_rack_2_v2_1_5.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 vcv_rack_2_v2_1_5: ask “what can the VCV Rack 2 v2.1.5 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (2)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/vcv_rack_2_v2_1_5/thin_fader |
0 / 119 | 0–16383 | continuous | ||
/vcv_rack_2_v2_1_5/save_to_e1 |
69 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /vcv_rack_2_v2_1_5/note/on <note> <velocity>, /vcv_rack_2_v2_1_5/cc/<number> <value>, /vcv_rack_2_v2_1_5/pitchbend <0-16383>, /vcv_rack_2_v2_1_5/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¶
How many parameters of the VCV Rack 2 v2.1.5 can be controlled over MIDI?
SynthHub's map of the VCV Rack 2 v2.1.5 lists 1 MIDI CC and 1 NRPN parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the VCV Rack 2 v2.1.5?
Yes: SynthHub's hosted MCP server knows the VCV Rack 2 v2.1.5's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.