Get past the warning
On the SmartScreen dialog, choose More info, then Run anyway. If you would rather not, build from source instead — the instructions are further down this page.
Download
Get Arc Router.
One installer, no runtime to install first. It is a pre-release and it is not code-signed yet — both of those are stated plainly below rather than discovered later.
Pre-release Windows 10 1809+ · x64 Published 2026-08-27 MSI · per-machine install
01 Before you run it
Windows will warn you. Here’s why, and what to do.
The MSI is not code-signed yet, so SmartScreen shows “Windows protected your PC” and names an unknown publisher. That is expected for this release, and it is not a reason to trust the file blindly either.
Verify the download first
Every release publishes a checksums.txt asset next to the MSI. Compare the
SHA-256 of the file you downloaded against the entry for it.
# the hash on the left should match checksums.txt
> Get-FileHash .\TotallyHotArcRouter-1.0.0.msi -Algorithm SHA256
02 Requirements
What you need
- Operating system
- Windows 10 version 1809 (build 17763) or later, x64. The GUI links against WebView2 and the Windows App SDK.
- Runtime
- None. Both the router and the GUI ship as self-contained builds, so no .NET runtime needs to be installed first.
- Privileges
- Administrator. The installer is per-machine and registers a Windows service.
- Provider credentials
- Keys for whichever backend models you intend to route to. They are stored through the router's secrets-at-rest path, not in plain configuration files.
03 Updates
Nothing updates without you clicking it.
Once installed, the router checks for new releases every six hours and the GUI offers to apply what it finds. Applying one restarts the service, so it is never done silently.
04 From source
Or build it yourself.
The whole thing is public. Cloning and building gives you the router, the GUI, and the sandbox, with no unsigned binary to reason about.
$ git clone https://github.com/davidpizon/TotallyHot-ArcRouter.git
$ cd TotallyHot-ArcRouter/src
$ dotnet build TotallyHotArcRouter.slnx -c Release
You will need the .NET SDK; the pinned target lives in
src/Directory.Build.props. The
bootstrap guide takes it from there through the benchmark sync
and a first routed request.
05 Terms
What you get it under
License
GNU Affero General Public License v3.0, with an additional permission for linking against Microsoft platform components. Use it, modify it, redistribute it — but if you distribute it or run a modified version as a network service, publish your corresponding source under the same terms.
Read the license →Third-party components
Every dependency the project redistributes is MIT, Apache-2.0, or BSD-3-Clause, so no dependency imposes copyleft of its own. Attributions are listed in full.
Third-party notices →Security
Found something that should not be filed in public? The repository carries a security policy with the disclosure process to follow.
Security policy →