See your signal.Run your 5G router.
FengSui is a web console you run on your own NAS. Live signal and carrier aggregation, band and cell locking, SMS, connected devices and Telegram alerts, all on one page. Your data never leaves home.
Verified on the Huawei 5G CPE Ultra 6 (H168-383) only. Other Huawei models work read-only.
Fourteen themes
Seven light and seven dark, several drawn from traditional Chinese and Japanese colours. Scroll to see some of them; switch in the console under Settings → Appearance, or mix your own.
Everything you need
Signal and carrier aggregation
RSRP, SINR, MCS, transmit power and every carrier's band and bandwidth: see what 4G and 5G are using right now.
Band and cell locks you can undo
Preview a band or cell lock before you apply it. If a lock cuts the internet, FengSui can undo it after a few minutes.
SMS
Send and receive messages in threads, copy one-time codes with a click, import contacts. Messages are stored encrypted.
Devices and internet access
See who is connected and how. Pause a device's internet access, or set a schedule for the kids.
Alerts and Telegram
Get told when the WAN drops, the signal weakens, the router restarts or the SMS box fills up. Read and answer SMS in Telegram.
Works with AI agents
A built-in MCP server lets Claude and other agents read the signal and its history. Writes are off by default and need your confirmation.
Built not to get in the way
The router is often a household's only internet connection. Every part of FengSui is designed to keep it that way.
Never fights you for the router
The router allows one admin login at a time. When you sign in to its own page, FengSui steps aside until you sign out.
Never locks the router
Three wrong passwords lock the router. FengSui stops after the first failed login and waits for you to fix it in the console.
Encrypted, on your own disk
The router password, SMS and settings are encrypted with your key and stored on your hardware. Nothing is uploaded.
No third-party code at runtime
The daemon uses only what ships with Node.js. No npm dependencies means no supply-chain surprises.
Just as good on a phone
Support FengSui
FengSui is built and maintained by one developer and is free for personal and other non-commercial use. If it is useful to you, you can support its development through GitHub Sponsors or Buy Me a Coffee.
Up and running in minutes
All you need is a NAS or computer that runs Docker, on the same network as your Huawei router.