# Error 401 - Unauthorized Error

**URL:** <https://community.parabola.io/t/error-401-unauthorized-error/1320>\
**Category:** Ask a question\
**Created:** [November 26, 2020, 9:31pm UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320 "2020-11-26T21:31:54Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Vladlen\_Vronsky](https://avatars.discourse-cdn.com/v4/letter/v/3e96dc/32.png) [@Vladlen\_Vronsky](https://community.parabola.io/u/Vladlen_Vronsky)\
**Post date:** [November 26, 2020, 9:31pm UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320/1 "2020-11-26T21:31:54Z")

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I’m having this as an error message appear.

 ![image](https://us1.discourse-cdn.com/flex020/uploads/parabola/original/2X/4/425254801cebad6928866f5883a6b108215643d7.png)

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**Author:** ![Kamil\_Serafin](https://avatars.discourse-cdn.com/v4/letter/k/5daacb/32.png) [@Kamil\_Serafin](https://community.parabola.io/u/Kamil_Serafin)\
**Post date:** [November 29, 2020, 9:22pm UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320/2 "2020-11-29T21:22:01Z")

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I have the same problem. Anybody have a solution?

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**Author:** ![daniel](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/daniel/32/732_2.png) [@daniel](https://community.parabola.io/u/daniel)\
**Post date:** [November 30, 2020, 4:26pm UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320/3 "2020-11-30T16:26:29Z")

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Hi @Vladlen_Vronsky and @Kamil_Serafin

Try passing your API key as a custom `Request Header`.

You can do this by adding `X-CoinAPI-Key` as your header key. You can then insert your API key as your header value.

Let me know if that works!

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**Author:** ![Balaji](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/balaji/32/1859_2.png) [@Balaji](https://community.parabola.io/u/Balaji)\
**Post date:** [March 18, 2022, 3:55am UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320/4 "2022-03-18T03:55:28Z")

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Even that is not working Daniel. Please find the attachment

 ![Screenshot (1205)](https://us1.discourse-cdn.com/flex020/uploads/parabola/original/2X/b/b60f3c6b9c375757aeb1e705396358c400cb7c03.png)

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**Author:** ![Balaji](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/balaji/32/1859_2.png) [@Balaji](https://community.parabola.io/u/Balaji)\
**Post date:** [March 18, 2022, 4:03am UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320/5 "2022-03-18T04:03:14Z")

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I have used the customer header required by the api too. That too didnt work

 ![Screenshot (1206)](https://us1.discourse-cdn.com/flex020/uploads/parabola/original/2X/b/b45e306d8ed66136f2846dd1e1d5d09adea07c93.png)

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**Author:** ![Emory\_Stainbrook](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/emory_stainbrook/32/1772_2.png) [@Emory\_Stainbrook](https://community.parabola.io/u/Emory_Stainbrook)\
**Post date:** [March 18, 2022, 2:34pm UTC](https://community.parabola.io/t/error-401-unauthorized-error/1320/6 "2022-03-18T14:34:41Z")

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Hi @Balaji- happy to help!

I took a look at CoinMarketCap’s [API documentation](https://coinmarketcap.com/api/documentation/v1/#operation/getV2CryptocurrencyPriceperformancestatsLatest) and it looks like you’ll need to include either an “id”, “slug”, or “symbol” parameter into the API endpoint URL.

Are you still running into this issue after doing that?