# Api stops to work after some calls
**URL:** https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040
**Category:** Product Support
**Created:** [May 9, 2022, 11:37am UTC](https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040 "2022-05-09T11:37:32Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@francesco](https://forum.mautic.org/u/francesco)
#### Post date: [May 9, 2022, 11:37am UTC](https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040/1 "2022-05-09T11:37:32Z")
**Your software**
My Mautic version is: 4.2.2
My PHP version is: 7.4.28
My Database type and version is: 10.3.34-MariaDB-log-cll-lve
**Your problem**
My problem is: api stops to work after a few calls.
Hi everone. I have integrated Mautic php API library (using composter) into my cms to sync users with my mautic installation.
I have several websites where users are registered and every website must sync users data to a single mautic installation.
For example
- www.my-mautic-website.it is where i have mautic installed
- www.website-one.it is a website
- www.website-two.it is another website
- www.website-three.it is another website
etcetera
I have developed a class that takes user’s data and send it to mautic api. I can call this class manually (for a single user) or automatically (if i want to sync all users)
calls are made via a javascript that recursively calls methods to add/edit users on mautic installation
i noticed that after a few syncs (i don’t know exactly how many syncs) the system stops to work and it seems like i cannot make any other api call manually or automatically because the api returns timeout connection. I tried adding 5 seconds, 10 seconds and it is always the same
thanks
These errors are showing in the log: NO
Steps I have tried to fix the problem:
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### Author:  [@joeyk](https://forum.mautic.org/u/joeyk)
#### Post date: [May 9, 2022, 12:13pm UTC](https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040/2 "2022-05-09T12:13:31Z")
Hi, it sounds like your Mautic cannot handle the volume of incoming traffic via API. Is that possible?
Joey
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### Author:  [@mikew](https://forum.mautic.org/u/mikew)
#### Post date: [May 9, 2022, 12:17pm UTC](https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040/3 "2022-05-09T12:17:10Z")
following on @joeyk comments what are your server specs ?
We have Mautic running on super heavy traffic sites with hundreds of API calls/minute and all working well.
I would maybe look at the server load to see if there are any resources that are being exhausted.
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### Author:  [@francesco](https://forum.mautic.org/u/francesco)
#### Post date: [May 9, 2022, 12:37pm UTC](https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040/4 "2022-05-09T12:37:38Z")
Hi, thanks for you reply.
I don’t think it is a problem of api traffic because after the development in local machine i made a test on a single website and i was only able to sync 55 users that is a really low number.
also at the moment i’m not able to sync any users, also if i try make a single api call and this have no sense.
Also if i start the sync from another domain it works well, and then it stops to work
i thought that on the webserver there is a kind of black listed domains list, i just wrote to the provider asking for this
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### Author:  [@francesco](https://forum.mautic.org/u/francesco)
#### Post date: [May 9, 2022, 3:08pm UTC](https://forum.mautic.org/t/api-stops-to-work-after-some-calls/24040/5 "2022-05-09T15:08:42Z")
I have just received a reply from my provider where mautic is hosted, it seems that there is a firewall rules that limits the requests.
i just sent them my domains list, let’s see if i can solve in this way 🙂