# Zapier API Integration Example? **URL:** \ **Category:** Uncategorized\ **Created:** [11 November 2018 22:50 UTC](https://api-discuss.freeagent.com/t/zapier-api-integration-example/1163 "2018-11-11T22:50:01Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Greig](https://api-discuss.freeagent.com/letter_avatar_proxy/v4/letter/g/e274bd/32.png) [@Greig](https://api-discuss.freeagent.com/u/Greig)\ **Post date:** [20 November 2018 09:14 UTC](https://api-discuss.freeagent.com/t/zapier-api-integration-example/1163/2 "2018-11-20T09:14:04Z")
Hello bennage, Strange that auth works for GET’ing and not POST’ing. I think I would start by looking at the OAuth redirect URI in zapier dashboard for your zapier app, and then check that is added to the OAuth redirect URIs in your Freeagent app in the developers dashboard. Next you may need to look at the query string on the Redirect URI when attempting to post something - it may be related to this post - > [@Potential issue with app approvals in FreeAgent production (works in sandbox)](https://api-discuss.freeagent.com/t/potential-issue-with-app-approvals-in-freeagent-production-works-in-sandbox/752): > > Hi there We have discovered that users of our app are not able to authenticate with FreeAgent in our production environment. The error we are receiving is: Sorry, there’s been a problem The redirect URI is invalid for this app. Please get in touch with the author of the application you’re trying to approve. We have done some analysis and can confirm the following: Our staging and production environments are running identical code, and are configured exactly the same in FreeAgent (Redirec… I do a similar thing with bills and zapier so it should work. Let us know how you get on you may need to post the string that is failing authentication with the private bits censored. --- _[View the full topic](https://api-discuss.freeagent.com/t/zapier-api-integration-example/1163)._