I would like to use Retool to build a mobile app with a connection to the OnePage API, but I can't get it to connect. Has anyone used this tool with the OnePage API?
Thanks,
Chris
Yes, you can
we’ve done similar integrations while building internal CRMs and mobile dashboards using Retool as the frontend layer.
Process:
- API Authentication Setup
OnePageCRM uses Basic Auth or OAuth 2.0 depending on the endpoint. If you're using an API Key, make sure you pass it in the header like this:
Authorization: Basic <base64_encoded_credentials>
For OAuth 2.0, need to:
- Create a OnePageCRM app.
- Retrieve client ID/secret
- Handle the access token flow inside Retool using custom OAuth setup (under Resources > OAuth2).
2.**Create a REST API Resource in Retool**
- Resources > Create new > REST AP
- Enter your base URL:
https://app.onepagecrm.com/api/v3/
- Add default headers, mainly
Authorization and Content-Type: application/json
- Test with a basic GET request like
/users/me to check connectivity
3.**Handle CORS / Backend Proxy (if needed)**
When we integrated OnePageCRM for a logistics client at Impero IT Services, we also had to map custom fields and dynamically refresh tokens every hour. We used Retool’s Query JSON with SQL feature to format API responses neatly into dashboards for sales and support teams, it works brilliantly once the connection is in place.