# How to use the API Key in Postman and node.js (request module)?

**URL:** <http://forum.companieshouse.gov.uk/t/how-to-use-the-api-key-in-postman-and-node-js-request-module/586>\
**Category:** Uncategorized\
**Created:** [May 10, 2016, 11:20am UTC](http://forum.companieshouse.gov.uk/t/how-to-use-the-api-key-in-postman-and-node-js-request-module/586 "2016-05-10T11:20:06Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![mfairhurst](http://forum.companieshouse.gov.uk/letter_avatar_proxy/v4/letter/m/bbce88/32.png) [@mfairhurst](http://forum.companieshouse.gov.uk/u/mfairhurst)\
**Post date:** [May 10, 2016, 3:45pm UTC](http://forum.companieshouse.gov.uk/t/how-to-use-the-api-key-in-postman-and-node-js-request-module/586/2 "2016-05-10T15:45:44Z")

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@natarajan_periyasamy,

The API key needs to be appended with a colon and then base 64 encoded. The following forum post maybe of help

> [@Authentication Issue](http://forum.aws.chdev.org/t/authentication-issue/322):
>
> Hi, I am new to Companies House API. I want to authenticate my application with companies house API to get/use companies House website data in my salesforce application. For this, I have to authenticate my application with companies House API. How can I do this? Any help will be appreciated…

Hope this helps and resolves the issue.

Thanks,

@mfairhurst

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