> ## Documentation Index > Fetch the complete documentation index at: https://docs.propaga.mx/llms.txt > Use this file to discover all available pages before exploring further. # API Integration > Complete overview of Propaga API endpoints and integration guide Propaga's API provides a comprehensive set of endpoints to integrate Buy Now, Pay Later (BNPL) functionality into your platform. This guide provides an overview of all available API endpoints organized by category. For detailed API documentation including request/response examples, parameters, and error codes, visit the [API Reference section](/api-reference/introduction). ## Authentication All API requests require authentication using an API key provided by the Propaga team. Include this key in the `Authorization` header of every request. Learn more about API authentication **Base URLs:** * Production: `https://api.propaga.io` * Staging: `https://staging-api.propaga.io` ## API Categories ### Account Management Manage user accounts, verification codes, and user data updates. Create a new account record and send an OTP code to the customer Validate the OTP code sent to the user Resend the account verification code to the user Generate a contract link for the user Update user information ### Transaction Management Create, manage, and track transactions throughout their lifecycle. Create a new transaction and send a verification code to the customer Create multiple transactions in a single request Generate a payment link for a transaction Retrieve transaction details by transaction ID Retrieve transaction details using your internal transaction ID Validate the OTP code for a transaction Resend the verification code for a transaction Resend verification code to the customer Update the delivery status of a transaction Cancel a transaction Update the delivery word for a transaction Resend the delivery word to the customer Generate an invoice for a transaction Retrieve invoice information for a transaction Create a transaction simulation for testing Retrieve list of transactions pending notification ### Corner Store Management Manage corner store information and operations. Retrieve corner store details by external ID Retrieve multiple corner stores in a single request Get default corner store configuration Add a new record to the waiting list ### KYC (Know Your Customer) Handle customer onboarding and KYC verification processes. Complete the onboarding process for a corner store Generate a KYC verification link for the customer Update or retrieve corner store name information ### External Payments Integrate with external payment providers and handle payment notifications. Send payment notification to Propaga Send Facilito payment provider notification Retrieve the amount due for a transaction ### Invoice Management Retrieve and manage invoice information. Retrieve invoice details by invoice ID ## Integration Flow The typical integration flow involves the following steps: Use the Account Management APIs to create and verify user accounts. This includes sending verification codes and validating OTP tokens. Complete the KYC process using the KYC endpoints to onboard corner stores and verify customer information. Create transactions using the Transaction Management APIs. This includes sending verification codes to customers and managing the transaction lifecycle. Validate transaction verification codes and update transaction statuses as needed (delivery, cancellation, etc.). Integrate with external payment providers using the External Payments APIs to notify Propaga of completed payments. ## Related Documentation Complete API documentation with detailed endpoints, parameters, and examples Understand the complete transaction lifecycle Learn about transaction statuses and their meanings Understand user account statuses General overview of how Propaga works ## Webhooks Propaga also provides webhooks to notify your system of important events. Learn more about available webhooks in the [Webhooks section](/webhooks/send-conciliation).