This binary was built without running the frontend build step, so the
React/Vue UI assets are not embedded. The REST API and MCP endpoints
still work normally — this fallback page only replaces the
/ui/ route.
If you installed mcpproxy with go install …@latest or
bare go build ./cmd/mcpproxy, this is expected: the Go
toolchain doesn't run npm. To get the real UI, either
install a release artifact (DMG, Homebrew, .deb, .rpm, AUR, Docker)
or build from source with:
make build # full build (swagger + frontend + backend) make build-server # server edition
See the project README for details.