# Qonto 💙 Developers ## Welcome! 👋 You're probably looking to automate your own business (if you are a Qonto customer) or to improve the experience of Qonto users using your product. In either case, you're in the right place. Qonto provides a free collection of APIs to help you build integrations on top of Qonto accounts, transactions and memberships. ## Automating your own business To authenticate the API with your own Qonto account, you will need to prompt access to Qonto. For authentication with API Key/ Secret: Head to app.qonto.com, then hit Settings > Integrations (API). If you haven't already, hit Generate to create your secret key. For authentication with Oauth flow: (classic qonto login/ password 💙 preferred by users) Head to Register your application, then submit your application request, we will contact you to provide you with the client_ID and secret of your application. ## Building for your App's Qonto users Sandbox access: To request a sandbox access as a third-party, please register following the link. We will email you and support you in your integration. # [Business API](/docs/business-api) Our [Business API](https://api-doc.qonto.com/docs/business-api/docs/Get-Started.md) allows you to automate your own business (if you are a Qonto customer) and to improve the experience of Qonto users using your product. Qonto provides a free collection of APIs to help you build integrations on top of Qonto accounts, transactions and memberships. # Open banking (for TPP) For licensed Third-Party Providers (TPP) that wants to integrate with Qonto in regards of the European regulation (PSD2). We made the following documentation to explain our PSD2 fallback mechanism: [Fallback mechanism - TPP identification through PSD2 QSeal certificates](https://qonto.notion.site/Fallback-mechanism-TPP-identification-through-PSD2-QSeal-certificates-668aabfe968f49b18d1982c40489f8cd)