ToneCommand GitHub

Docs

Third-Party Notices

This project stands on excellent prior work by the Fractal Audio community. This file states exactly what came from where and under which license.

mcp-midi-control (TheAndrewStaker)

The primary foundation of this project's protocol layer.

Reproduction of that project's NOTICE (as required by Apache-2.0):

MCP MIDI Control
Copyright 2026 Stephen Staker

This product is licensed under the Apache License, Version 2.0.
See the LICENSE file for the full license text.

This repository also contains the `fractal-midi` package — a
codec-only TypeScript library that builds and parses Fractal Audio
SysEx wire bytes without depending on a MIDI transport. The same
trademark statement below applies to `fractal-midi`.

---

TRADEMARKS

This project is an unaffiliated community tool. "Fractal Audio",
"AM4", "Axe-Fx", "Axe-Fx II", "Axe-Fx III", "FM3", "FM9", and
related product names are trademarks of Fractal Audio Systems, Inc.
"ASM", "Ashun Sound Machines", and "Hydrasynth" are trademarks of
Ashun Sound Machines.

This project neither claims endorsement from, nor affiliation with,
Fractal Audio Systems or Ashun Sound Machines. It is a software
utility that communicates with hardware the user already owns via
publicly-documented SysEx, NRPN, and CC messages — including, for
Fractal devices, the protocol information Fractal Audio itself
publishes in its "MIDI for Third-Party Devices" specifications.

The package name `fractal-midi` uses the "Fractal" trademark
descriptively (nominative fair use) to identify the hardware the
library targets. The package does not claim official status and
is not affiliated with Fractal Audio Systems, Inc.

---

THIRD-PARTY SOFTWARE

This product includes software from the following projects, each
distributed under its own license. See the respective project's
LICENSE / NOTICE files in node_modules/ for full license text
when distributing in Object form.

  - @modelcontextprotocol/sdk (MIT License)
    https://github.com/modelcontextprotocol/typescript-sdk

  - node-midi (MIT License)
    https://github.com/justinlatimer/node-midi

  - zod (MIT License)
    https://github.com/colinhacks/zod

This product also includes gen-3 (Axe-Fx III / FM3 / FM9) protocol
data derived from:

  - fractal-syx-codec  (Apache License, Version 2.0)
    Copyright 2026 Andrew Mercurio ("BoodieTraps")
    https://github.com/drewmerc302/fractal-syx-codec
    The gen-3 preset-file format spec (FORMAT.md) and the read-ordinal
    effect-type roster tables. The Huffman/CRC codec here is a clean-
    room reimplementation from that spec; the roster name tables are
    derived from its data, independently cross-validated against our
    own hardware captures.

Additional development-only dependencies (TypeScript, tsx, jest,
etc.) are not redistributed in Object form and are listed in
package.json.

Pass-through credits carried by the content above and used here:

forgefx-midi (sKuhLight)

Source of the FM9 modifier model used by fm9/protocol.py and fm9/device.py: modifier slot addressing (slot N = effect id 3 + N - 1, 32 slots), the field map (pid 0 source, pid 1/2 min/max, pid 8 target effect id, pid 9 target param id, curve fields), and the FM3 modulation source enum used as the starting hypothesis for the FM9's. Re-implemented in Python; no code copied verbatim.

ForgeFX (sKuhLight)

Consulted for the bindModifier call sequence (bind target effect, target param, then source) and the modifier address-model architecture. No code copied.

Fractal Audio Systems

The officially documented command set (scene select, block bypass and channel, preset/scene name queries, tempo, tuner, looper, status dump, and the effect ID table) comes from Fractal Audio's public specification "Axe-Fx III MIDI for Third-Party Devices", Revision 1.4, applied to the FM9 with its model byte 0x12.

"Fractal Audio", "Axe-Fx", "FM3", and "FM9" are trademarks of Fractal Audio Systems, Inc. This project is not affiliated with or endorsed by Fractal Audio Systems.

HeadRush web editor bundle

config/headrush_topologies.json records, per signal-path template, which of the fourteen slots are common, which are on a parallel branch, and which belong to an independent path. Those are facts about how the device routes audio, and the device will not state them itself: it publishes the ten NAMES on Chain.Routing and nothing about their shapes (#109).

Taken are the routing names, an ordering field, a vocals flag, and per slot a screen position and a role integer. No code is copied and none is executed; the bundle is parsed for those values and discarded. The file marks itself api_readable: false and provenance: "vendor editor bundle" so that nothing downstream can present it as something the unit answered.

"HeadRush" is a trademark of inMusic Brands, Inc. This project is not affiliated with or endorsed by inMusic Brands.

HeadRush published model list

config/headrush_amp_models.json is generated from that list. For each HeadRush amp-model ordinal it records one fact: the real-world amplifier the manufacturer says the model emulates.

This differs from the Amplifier Library Guide above in whose writing is involved. That guide is a community document with an author, so its generator takes specifications and leaves the prose. Here there is no prose to leave: the page carries one attribution per model and nothing else.

What IS taken is the vendor's own wording of each attribution, verbatim, including its trademark symbols, because paraphrasing a claim about whose amp is being emulated would make it less checkable rather than more. The facts are HeadRush's to state; the phrasing is theirs too, and it is reproduced only to the extent needed to identify the gear.

"HeadRush" is a trademark of inMusic Brands, Inc. Amplifier and effect names in the attributions, including Fender, Marshall, Vox, Orange, ENGL and Mesa Boogie, are trademarks of their respective owners. They appear here, as on the vendor's own page, to identify the equipment a model emulates. This project is not affiliated with or endorsed by inMusic Brands or by any of those owners, and the vendor states that its model list is for reference only.

The two inputs are both generated by script rather than transcribed, in HeadrushRigBuilder (@bschmalz81401):

Amplifier Library Guide

config/amp_models.json is generated from that guide. For each FM9 amp-roster ordinal it records factual specifications only: the real-world amplifier modeled, the original cab, DynaCab pairing, front-panel controls, tube complement, and tonestack position.

The guide's prose notes and tips are the author's own writing, and some of them quote other people. They are deliberately not reproduced here. The generator can extract them with --with-prose for local use, to config/amp_models.full.json, which is gitignored.

Amplifier specifications in that guide derive from manufacturer manuals and websites.

Yek's Guide to the Fractal Audio Drive Models

config/drive_models.json is generated from that guide's own section headings (" (based on )"): factual model-to-pedal identity only. The guide's prose synopses and tips are not reproduced. FM9 drive models added after the guide's last update remain unmapped by design.

Fractal Audio Wiki (community wiki), effect-type pages

Fractal Audio Wiki (community wiki)

config/cab_models.json records, for 2,235 of the FM9's 2,237 stock cab slots and for all 45 firmware DynaCabs, the cabinet each was captured from, and where the source gives them the manufacturer, size and microphone.

Facts only. Each model value is the cabinet's identity - make, model, speaker complement - reduced to its first clause. The wiki's surrounding commentary and its quotations from named individuals are deliberately not reproduced; the generator's --with-prose mode keeps them in a gitignored local file instead.

Check the wiki's content licence before redistributing this file further.

HeadRush web editor (normalisation tapers)

The unit publishes an opaque integer per continuous parameter (x-options.normalizeAlgo) and no formula for it, so the curve between the 0..1 wire value and the value the unit displays is not on the API. The editor has to convert, so it carries the curves.

WHAT IS TAKEN IS FACTS, NOT CODE. Two things are recorded: the names of the eleven curves, which is an enumeration the vendor ships in a file it serves, and 990 reference vectors, which are numbers the vendor's own functions produced when run. Neither is their expression of anything.

The vendor's SOURCE TEXT is deliberately not committed. A sha256 prefix of each extracted fragment is kept instead, so that regenerating the table can be shown to have read the same code without the code travelling with it. Anyone checking the maths reads it from their own unit.

config/headrush_topologies.json takes slot geometry from the same bundle and carries the same two fields, provenance: "vendor editor bundle" and api_readable: false, so nothing downstream can present either as a device read. That file arrives with #121 and may not be present yet depending on merge order; this notice stands on its own either way.

"HeadRush" is a trademark of inMusic Brands, Inc. This project is not affiliated with or endorsed by inMusic Brands.

i18next

The local interface translation engine is i18next 26.5.5, distributed under the MIT license. Source: https://github.com/i18next/i18next and npm package https://www.npmjs.com/package/i18next/v/26.5.5. The unmodified browser build is in ui/languages/i18next.min.js; its license is included beside it as i18next.LICENSE. There is no runtime CDN or translation-service dependency.

Source: THIRD_PARTY_NOTICES.md in the repository.