I’ve had the Simplisafe Integration working for about 6 months (such as it is). Last week it stopped working and started throwing an error. Unfortunately my Wife figured out it wasn’t working because the automations stopped. Bummer. Trying to set it up again now and I’m getting an “Unknown Error” when I try to put the Token in. Just so it’s said again, yes, I know how to get the code, and I’ve done it successfully. Seems something broke on this.
I don’t have Simplisafe and barely know what it’s about apart from the Youtube ads, but try this shot in the dark:
HA > Settings > Devices and Services > 3 Dots (Top right) > Application credentials. If you have a Simplisafe entry, click the 3 Dots > delete.
Hopefully that’ll work!
Same here. Tried deleting the integration and reconfiguring to no avail. I’m starting to think the issue is on SimpliSafe’s side.
I have had the same issue lately with Simplisafe. I had deleted the integration after it randomly stopped working and kept getting the invalid authentication error after following the instructions for getting the callback code. However, after updating HA to 2025.7.2, all of a sudden I am able to successfully re-add the integration.
Any tips? I’m still not able to re-add it with 2025.7.2.
Only other issue I can think of is what browser you are using. Initially, I was trying to use my default browser, which is a firefox fork, and kept getting the invalid authorization errors, so I reinstalled chrome to try it. I did get a couple invalid authorization errors at the start, but I had to try it a couple times to get it to work. Other than the update and browser, I have no other clues as to what could be the issue.
Ok, could you double check if I’m doing something stupid? I checked and Chrome is up to date and I’m incognito mode. Here’s the redacted message I believe is the code.
Same issue here. I think the problem must be with SimpliSafe. Mine all went offline at the same time as you folks.
Mine has also stopped working after close to a year without issue, I see 403s in the HA logs so figured I needed to recreate the auth token. Using simplipy fails at running script/auth, once Safari is opened it says the URL is invalid.
I figured out my issue.
Since I started using a passkey for auth it was no longer requiring code base MFA.
I was able to get a new auth code to configure the HA integration by doing the following:
- Sign out of SimpliSafe from my browser
- Run
script/auth - Enter email address
- The passkey flow is started, ignore it
- Choose “Use Password”
- It will insist on using passkey
- Choose “Try another method”
- Choose the Phone option
- Use that 6 digit code to provide to the
script/authprompt - Copy the code that was generated and use it for the HA integration config
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Unfortunately when I do this, the Code Verifier is longer than the integration requires. I’m getting a 53-char string rather than the required 45-char string. Not sure what’s happening or if they’ve changed up their API recently.
Not sure if this helps anyone but I tried to do a new SimpliSafe install with HomeAssistant 2025.11.1 and it kept failing on the SimpliSafe website. It would just hang after I entered in the 6 digit code that was texted to me.
After many tries I finally just looked at the browsers network traffic and saw that it had some sort of parsing error with the returned code but I was able to view the code in the Network inspection tab and copy and paste it in and it seems to be working.