Legal

Open-Source Software

Effective and last updated 8 October 2026

Agent I2I includes software and models made by others, and one program of ours, shared under open-source licences. Each is licensed to you by its own authors under its own licence, not under our Terms of Service or our End-User Licence Agreement (see its section 7). This page lists them, with their licences and the notices those licences require. Some of these licence texts also ship with the application.

1. In the installer

Component	Licence
Electron 43.3.0	MIT. Includes Chromium (BSD-3-Clause and others; its full notices ship with the application as `LICENSES.chromium.html`), Node.js (MIT), V8 (BSD-3-Clause), and Chromium's FFmpeg media library (LGPL-2.1-or-later) as a separate library. On macOS, also Squirrel, Mantle and ReactiveObjC (MIT).
electron-updater 6.8.9	MIT
React and React DOM 19.2.8	MIT
React Flow (@xyflow/react) 12.11.2	MIT
dagre (@dagrejs/dagre) 3.1.0	MIT
three.js 0.185.1	MIT
urdf-loader 0.13.1	Apache-2.0 (notice below)
react-markdown 10.1.0, remark-gfm 4.0.1	MIT
fflate 0.8.3	MIT
Their JavaScript dependencies	MIT, ISC, BSD-3-Clause, BlueOak-1.0.0 and Python-2.0
Python 3.10.21	PSF-2.0. Built by python-build-standalone, and includes OpenSSL (Apache-2.0), SQLite (public domain), zlib (zlib licence), libffi (MIT) and other libraries, each under its own licence.
Nuitka 4.2.2 runtime library, compiled into the application's backend modules	AGPL-3.0 (version 3) with the Nuitka Runtime Library Exception, Version 1.0, which allows the compiled modules to be distributed under terms of our choice (notice below). Its headers include Hedley (CC0-1.0) and incbin (Unlicense), both public domain.
Berkeley DB 6.0.19, inside Python: Linux version 0.1.1 only; removed from later versions	Sleepycat licence (notice below). Source: section 4.
Piper (piper-tts) 1.7.0	GPL-3.0-or-later. Includes code ported from g2pW (Apache-2.0) and the Nakdimon model (MIT). Source: section 4.
eSpeak NG, built into Piper	GPL-3.0-or-later, with its data files. Source: section 4.
Phos voice driver (`tts/driver.py`)	GPL-3.0-or-later, Phos PAI, Inc. A separate program that runs Piper: the rest of Agent I2I starts it with command-line options and communicates with it only through its standard input, output and error streams and the sound files it writes. Shipped as its own source from version 0.1.2; compiled in versions 0.1.0 and 0.1.1. Source: section 4.
ONNX Runtime 1.23.2	MIT. Its third-party notices ship with it.
Moonshine Voice 0.1.5	MIT
NumPy 2.2.6	BSD-3-Clause
python-sounddevice 0.5.6	MIT. Includes PortAudio (MIT); on Windows, a PortAudio build with ASIO support (notice below).
llama.cpp b10625	MIT. Includes BoringSSL (Apache-2.0), nlohmann/json (MIT), cpp-httplib (MIT), llamafile sgemm (MIT), xxHash (BSD-2-Clause), stb_image (MIT or public domain), miniaudio (public domain or MIT-0), subprocess.h and SHA-1/SHA-256 code (public domain). On Windows and Linux, the Vulkan build also includes the Khronos Vulkan headers (Apache-2.0).
RTDE Python Client Library	BSD-3-Clause (notice below)
Other Python packages	certifi (MPL-2.0), tqdm (MPL-2.0 and MIT), requests (Apache-2.0), urllib3 (MIT), idna (BSD-3-Clause), charset-normalizer (MIT), filelock (MIT), platformdirs (MIT), cffi (MIT-0), pycparser (BSD-3-Clause), google-crc32c (Apache-2.0), protobuf (BSD-3-Clause), flatbuffers (Apache-2.0), SymPy (BSD-3-Clause), mpmath (BSD-3-Clause), coloredlogs (MIT), humanfriendly (MIT), packaging (Apache-2.0 or BSD-2-Clause), pathvalidate (MIT), pip (MIT), setuptools (MIT)
On Windows	The installer is built with NSIS (zlib licence). Microsoft's Visual C++ runtime ships under Microsoft's own redistribution terms; it is not open source.

2. Downloaded when you run Agent I2I on your computer

These come from our servers only when you choose to run Agent I2I on your computer.

Component	Licence
Moonshine speech models (English, streaming; spelling)	MIT
decider-4b v2.1 (GGUF by Mapika)	Apache-2.0
Piper voice en_US-john-medium (piper-voices 1.0.0)	Public domain: trained on LibriVox recordings of public-domain texts. Its configuration file is changed by Phos PAI.
Qwen3.5-4B (Q4_K_M GGUF by Unsloth)	Apache-2.0. Downloaded only when the Chat Agent runs on your computer.

3. Notices

MIT licence

Components marked MIT are provided under these terms, each with its own copyright notice. Among them: Electron, Copyright (c) Electron contributors, Copyright (c) 2013-2020 GitHub Inc.; React and React DOM, Copyright (c) Meta Platforms, Inc. and affiliates; React Flow, Copyright (c) 2019-2025 webkid GmbH; dagre, Copyright (c) 2012-2014 Chris Pettitt; three.js, Copyright (c) 2010-2026 three.js authors; electron-updater, Copyright (c) 2015 Loopline Systems; react-markdown, Copyright (c) Espen Hovlandsdal; remark-gfm, Copyright (c) Titus Wormer; fflate, Copyright (c) Arjun Barrett; llama.cpp, Copyright (c) 2023-2026 The ggml authors; ONNX Runtime, Copyright (c) Microsoft Corporation; Moonshine Voice and the Moonshine models, Copyright (c) 2025 Moonshine AI; python-sounddevice, Copyright (c) 2015-2025 Matthias Geier; PortAudio, Ross Bencina and Phil Burk; Nakdimon, Copyright 2022 Elazar Gershuni.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Apache License 2.0

Components marked Apache-2.0 — among them Qwen3.5-4B, Copyright Alibaba Cloud; decider-4b; urdf-loader; requests; and BoringSSL — are licensed under the Apache License, Version 2.0. You may not use them except in compliance with that licence, a copy of which is at www.apache.org/licenses/LICENSE-2.0. They are distributed on an "as is" basis, without warranties or conditions of any kind, either express or implied.

urdf-loader carries this notice:

Copyright © 2020 California Institute of Technology. ALL RIGHTS
RESERVED. United States Government Sponsorship Acknowledged.
Neither the name of Caltech nor its operating division, the
Jet Propulsion Laboratory, nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.

RTDE Python Client Library

BSD 3-Clause License

Copyright (c) 2022, Universal Robots A/S
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Nuitka

The application's backend modules are compiled with Nuitka 4.2.2, which builds its runtime library into each of them. That runtime library is licensed under the GNU Affero General Public License version 3 with the Nuitka Runtime Library Exception, Version 1.0, an additional permission under section 7 of that licence that allows the compiled modules to be distributed under terms of our choice. Nuitka's notice:

Nuitka is a Python compiler developed by Kay Hayen.

Copyright (c) 2008-2026 Kay Hayen
All rights reserved.

Other individuals contributed to the development of Nuitka under
Apache License 2.0, but this has since been relicensed under
AGPLv3 and proprietary licenses.

Berkeley DB (Linux, version 0.1.1 only)

Copyright (c) 1990, 2013 Oracle and/or its affiliates.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Redistributions in any form must be accompanied by information on
   how to obtain complete source code for the DB software and any
   accompanying software that uses the DB software.  The source code
   must either be included in the distribution or be available for no
   more than the cost of distribution plus a nominal fee, and must be
   freely redistributable under reasonable conditions.  For an
   executable file, complete source code means the source code for all
   modules it contains.  It does not include source code for modules or
   files that typically accompany the major components of the operating
   system on which the executable file runs.

THIS SOFTWARE IS PROVIDED BY ORACLE ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE DISCLAIMED.  IN NO EVENT SHALL ORACLE BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Copyright (c) 1990, 1993, 1994, 1995
     The Regents of the University of California.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

Copyright (c) 1995, 1996
     The President and Fellows of Harvard University.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY HARVARD AND ITS CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL HARVARD OR ITS CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

FFmpeg

This software uses code of FFmpeg licensed under the LGPLv2.1, inside Electron's Chromium media library.

ASIO

ASIO is a trademark and software of Steinberg Media Technologies GmbH.

Licence texts

GNU General Public License version 3: www.gnu.org/licenses/gpl-3.0.html
GNU Affero General Public License version 3: www.gnu.org/licenses/agpl-3.0.html
GNU Lesser General Public License version 2.1: www.gnu.org/licenses/old-licenses/lgpl-2.1.html
Apache License 2.0: www.apache.org/licenses/LICENSE-2.0
Mozilla Public License 2.0: www.mozilla.org/MPL/2.0
BSD and MIT licences: opensource.org/licenses
Python Software Foundation License: docs.python.org/3/license.html

4. Source code

Piper, eSpeak NG and the Phos voice driver are licensed under the GNU General Public License version 3 or later, the FFmpeg library inside Electron under the GNU Lesser General Public License version 2.1 or later, and Berkeley DB, in the Linux package of version 0.1.1, under the Sleepycat licence. You may get their source code here:

Piper 1.7.0: github.com/OHF-Voice/piper1-gpl, tag v1.7.0
Phos voice driver, from version 0.1.2: the application carries it as its own source, uncompiled, as tts/driver.py in the application's resources folder, with its GPL notice at the top. That file is its complete source.
Phos voice driver, versions 0.1.0 and 0.1.1 (the same file in both): phos-voice-driver-0.1.1.py, its complete source, tts/driver.py. Those versions ship it compiled: the build copies it to _driver.py, compiles that with Nuitka 4.2.2 under the application's own Python 3.10.21 (python -m nuitka --mode=module _driver.py --no-pyi-file --remove-output --disable-ccache --python-flag=no_docstrings), puts the compiled module in the application's tts folder, and replaces tts/driver.py there with three lines that start it.
eSpeak NG, as built into Piper 1.7.0: github.com/espeak-ng/espeak-ng, commit 724808c
FFmpeg, as built for Chromium 150.0.7871.212 in Electron 43.3.0: chromium.googlesource.com/chromium/third_party/ffmpeg, commit ad41607c, with Electron's patch at github.com/electron/electron, tag v43.3.0, patches/ffmpeg
Berkeley DB 6.0.19, in the Linux package of version 0.1.1: db-6.0.19.tar.gz, the archive python-build-standalone builds it from; and Python 3.10.21, whose _dbm module uses it: github.com/python/cpython, tag v3.10.21

Written offer

We will give anyone who has a copy of Agent I2I the complete corresponding source code of each component in it licensed under the GNU GPL or LGPL or the Sleepycat licence, the Phos voice driver included, in the version we distributed, at no charge. Email support@phospai.com with your Agent I2I version and platform. This offer is valid for at least three years from the date you received that version, and for as long as we distribute or support it.

5. How to contact us

Phos PAI, Inc. — support@phospai.com