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This guide shows you how to create an app in a Tiny ERP account to get OAuth credentials (client ID & secret). Tiny ERP apps are private: each Tiny ERP account creates its own app.
1

Check the requirements

Apps are available from the Construa plan, with the Gestão de Aplicativos extension installed in the Tiny ERP account. An account can have up to 5 apps.
2

Create an app

  1. In Tiny ERP, open Menu > Configurações > Geral > Aplicativos.
  2. Click + novo aplicativo and enter a name for the app.
  3. Under URLs de Redirecionamento, add https://api.nango.dev/oauth/callback (or your own custom callback URL).
  4. Tick the permissions (modules) your integration needs, for example account information to call GET /v3/info.
  5. Save, then open the app again and copy the Client ID and Client Secret under Chaves de acesso. Renew the client secret whenever you change the permissions.
3

Add the credentials in Nango

In your Tiny ERP integration in Nango, paste the client ID and secret. Nango requests the openid scope; the permissions come from the app.
4

Next

Follow the Quickstart.
Because every Tiny ERP account has its own app, you will usually let each user bring their own credentials. Create the Connect Session with empty oauth_client_id_override and oauth_client_secret_override values: Connect UI then shows Client ID and Client Secret as fields the user fills in. See Create a connect session for the exact syntax.
For more details, see Tiny ERP authentication and creating an app.