# Ignition 8.3 API Usage Guide (via Postman)

**URL:** <https://forum.inductiveautomation.com/t/ignition-8-3-api-usage-guide-via-postman/93935>\
**Category:** Ignition 8.3 Early Access\
**Created:** [July 30, 2024, 6:32pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-api-usage-guide-via-postman/93935 "2024-07-30T18:32:25Z")\
**Posts on this page:** 4\
**Page:** 2

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**Author:** ![amenallah.guiras-ext](https://avatars.discourse-cdn.com/v4/letter/a/53a042/32.png) [@amenallah.guiras-ext](https://forum.inductiveautomation.com/u/amenallah.guiras-ext)\
**Post date:** [May 19, 2026, 10:28am UTC](https://forum.inductiveautomation.com/t/ignition-8-3-api-usage-guide-via-postman/93935/25 "2026-05-19T10:28:53Z")

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Hello,

First, thank you for this well-written user guide. I was able to configure the API and test it successfully.

However, it seems that it only works with unsecured connections. When I check the "Require secure connections for API Keys" option and use HTTPS (the SSL certificate is properly installed, and I access the gateway via HTTPS), I receive an "Unauthorized" error with status 401 when calling the API.

Is there any additional configuration required to enable secure connections ?  
Additional information: when I use an unsecure API key and call the API over HTTPS, it works correctly.

Thank you in advance for your support.

Best regards,  
Amenallah

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**Author:** ![andrew.budaiev](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/andrew.budaiev/32/72921_2.png) [@andrew.budaiev](https://forum.inductiveautomation.com/u/andrew.budaiev)\
**Post date:** [June 5, 2026, 5:42am UTC](https://forum.inductiveautomation.com/t/ignition-8-3-api-usage-guide-via-postman/93935/26 "2026-06-05T05:42:05Z")

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Can an API Usage Guide be added to the User Manual? 🙏

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [June 5, 2026, 2:41pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-api-usage-guide-via-postman/93935/27 "2026-06-05T14:41:51Z")

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What does an "API Usage Guide" look like to you?

Not speaking on behalf of the docs team here or anything - I'm just curious.  
To me, it feels like any actual usage guide is necessarily going to tie us to a specific _external_ piece of software, with the documentation maintenance burden that implies. Tools like Postman, Bruno, etc come and go, and constantly reshuffle their UI in ways that make it hard for a third party (in this case, us) to consistently document.

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**Author:** ![andrew.budaiev](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/andrew.budaiev/32/72921_2.png) [@andrew.budaiev](https://forum.inductiveautomation.com/u/andrew.budaiev)\
**Post date:** [June 5, 2026, 8:23pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-api-usage-guide-via-postman/93935/28 "2026-06-05T20:23:53Z")

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Personally, I haven’t interacted with APIs at all, and I didn’t even know you need external software for it.

A couple of times, I stumbled across the gateway-openapi-thingy and found some POSTs or GETs that might be interesting to try, but I never actually did anything with them. So you got me — I have no idea what’s going on.

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