# HTTP API not finding Core

**URL:** <https://community.particle.io/t/http-api-not-finding-core/9720>\
**Category:** Troubleshooting\
**Created:** [January 31, 2015, 6:45pm UTC](https://community.particle.io/t/http-api-not-finding-core/9720 "2015-01-31T18:45:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![penumbra](https://avatars.discourse-cdn.com/v4/letter/p/9f8e36/32.png) [@penumbra](https://community.particle.io/u/penumbra)\
**Post date:** [January 31, 2015, 6:45pm UTC](https://community.particle.io/t/http-api-not-finding-core/9720/1 "2015-01-31T18:45:43Z")

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Hi there,

I’m new to playing with the HTTP API and am having trouble getting a response from my Core. I can see it is active in the web IDE and flash it from there as well. When I make a request for a list of devices ([https://api.spark.io/v1/devices](https://api.spark.io/v1/devices)), I get “Not Found”. When I append either of my Core ids to the same, I get the same.

Thinking I was doing something wrong, I attempted to use the following web ui ([http://jflasher.github.io/spark-helper/](http://jflasher.github.io/spark-helper/)) and get errors as well.

Any suggestions would be appreciated.

Thanks,  
-P

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**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\
**Post date:** [February 1, 2015, 1:15am UTC](https://community.particle.io/t/http-api-not-finding-core/9720/2 "2015-02-01T01:15:58Z")

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@penumbra,

Using the Web IDE, do you see the core listed in your account?

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<div class="post-metadata">

**Author:** ![penumbra](https://avatars.discourse-cdn.com/v4/letter/p/9f8e36/32.png) [@penumbra](https://community.particle.io/u/penumbra)\
**Post date:** [February 1, 2015, 1:55am UTC](https://community.particle.io/t/http-api-not-finding-core/9720/3 "2015-02-01T01:55:05Z")

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I do - and it notes it as currently active.

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<div class="post-metadata">

**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\
**Post date:** [February 1, 2015, 2:52am UTC](https://community.particle.io/t/http-api-not-finding-core/9720/4 "2015-02-01T02:52:53Z")

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Can you try: `https://api.spark.io/v1/devices?access_token=xxxxxx`

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**Author:** ![Thomasoc](https://avatars.discourse-cdn.com/v4/letter/t/6bbea6/32.png) [@Thomasoc](https://community.particle.io/u/Thomasoc)\
**Post date:** [February 1, 2015, 8:41am UTC](https://community.particle.io/t/http-api-not-finding-core/9720/5 "2015-02-01T08:41:28Z")

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Or even: [http://api.spark.io/v1/devices/device\_id?access\_token=core\_access\_token](http://api.spark.io/v1/devices/device_id?access_token=core_access_token)

Which should return a JSON output, but only if the Core is turned on and connected.