# Can an external app call an SDK module in Ignition?

**URL:** <https://forum.inductiveautomation.com/t/can-an-external-app-call-an-sdk-module-in-ignition/73807>\
**Category:** Ignition\
**Tags:** sdk, ignition81, perspective\
**Created:** [May 16, 2023, 6:54pm UTC](https://forum.inductiveautomation.com/t/can-an-external-app-call-an-sdk-module-in-ignition/73807 "2023-05-16T18:54:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Zak\_Taylor](https://avatars.discourse-cdn.com/v4/letter/z/4af34b/32.png) [@Zak\_Taylor](https://forum.inductiveautomation.com/u/Zak_Taylor)\
**Post date:** [May 16, 2023, 6:54pm UTC](https://forum.inductiveautomation.com/t/can-an-external-app-call-an-sdk-module-in-ignition/73807/1 "2023-05-16T18:54:47Z")

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Is it possible for our external Java application to make a call to Ignition to clear/ack an alarm?

If so, what is the proper way to connect to the gateway for this sort of action? I can only seem to find documentation available from the perspective of a module loaded into Ignition.

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [May 16, 2023, 7:09pm UTC](https://forum.inductiveautomation.com/t/can-an-external-app-call-an-sdk-module-in-ignition/73807/2 "2023-05-16T19:09:50Z")

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No, your external application cannot call any part of Ignition's API.

Only a module loaded into Ignition can do this.

However, Ignition does offer a module that permits you to develop your own web hooks, called the WebDev module. With it, you can create web API endpoints that call SDK APIs on your behalf.