How to integrate API for barcode creation on a product site?

[nandini21]

i have a product website on shopify, and i want to create barcode labels for all of my products using a different software called bartender. i have ready api key with me, i want to know where to integrate it on shopify so that i can print barcode labels using the custom designed template. i'm in a bit hurry, and urgently need someones assistance on this matter. I request your help on this.