Waldorf XT (Sysex) MIDI CC chart, NRPN and OSC map¶
The Waldorf XT (Sysex) MIDI implementation: 9 SysEx commands, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | Waldorf XT (Sysex) |
|---|---|
| Vendor | Waldorf |
| OSC prefix | /xt_sysex |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/waldorf/xt_sysex.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/waldorf/xt_sysex.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 xt_sysex: ask “what can the Waldorf XT (Sysex) do?” and it reads this map with list_routes. See the MCP guide.
SysEx commands (9)¶
| OSC address | Arguments |
|---|---|
/xt_sysex/octave |
val: u7 |
/xt_sysex/semitone |
val: u7 |
/xt_sysex/detune |
val: u7 |
/xt_sysex/pb_range |
val: u7 |
/xt_sysex/keytrack |
val: u7 |
/xt_sysex/fm_amount |
val: u7 |
/xt_sysex/source |
val: u7 |
/xt_sysex/amount |
val: u7 |
/xt_sysex/dest |
val: u7 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /xt_sysex/note/on <note> <velocity>, /xt_sysex/cc/<number> <value>, /xt_sysex/pitchbend <0-16383>, /xt_sysex/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 Waldorf XT (Sysex)?
Yes: SynthHub's hosted MCP server knows the Waldorf XT (Sysex)'s MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.