# SimPay Docs

> Znajdziesz tutaj wszystkie niezbędne informacje dotyczące integracji i obsługi systemu płatności SimPay.pl

## Table of contents

 - [Powiadomienia IPN - DirectBilling](https://docs.simpay.pl/notifications/directbilling.md)
 - [Statusy w SimPay](https://docs.simpay.pl/payment/statuses.md)
 - [Integracja przez agenta AI (Claude, Codex i inne)](https://docs.simpay.pl/ai.md)
 - [Changelog](https://docs.simpay.pl/changelog.md)
 - [Lista dostępnych SDK i bibliotek](https://docs.simpay.pl/sdks.md)
 - [AI Agent Integration (Claude, Codex, and others)](https://docs.simpay.pl/en/ai.md)
 - [List of Available SDKs and Libraries](https://docs.simpay.pl/en/sdks.md)
 - [Wprowadzenie do DirectBilling (DCB)](https://docs.simpay.pl/directbilling.md)
 - [Generowanie transakcji DirectBilling](https://docs.simpay.pl/directbilling/transaction.md)
 - [Szybki start: Autoryzacja i podstawy API](https://docs.simpay.pl/quickstart.md)
 - [Lista metod płatności](https://docs.simpay.pl/payment/methods.md)
 - [Zwroty](https://docs.simpay.pl/payment/refunds.md)
 - [Quick Start: Authorization and API Basics](https://docs.simpay.pl/en/quickstart.md)
 - [Walidacja adresów IP powiadomień](https://docs.simpay.pl/notifications/payment/ip-validation.md)
 - [Witaj w dokumentacji SimPay](https://docs.simpay.pl/index.html.md)
 - [Płatności bezpośrednie (directChannel)](https://docs.simpay.pl/payment/directchannel.md)
 - [Wprowadzenie - Płatności Online](https://docs.simpay.pl/payment.md)
 - [SMS Premium](https://docs.simpay.pl/sms.md)
 - [Welcome to the SimPay Documentation](https://docs.simpay.pl/en.md)
 - [Wprowadzenie do Notyfikacji IPN Płatności Online](https://docs.simpay.pl/notifications/payment.md)
 - [Weryfikacja sygnatury](https://docs.simpay.pl/notifications/payment/signature.md)
 - [Struktura i obsługa powiadomienia IPN](https://docs.simpay.pl/notifications/payment/structure.md)
 - [Obsługa BLIK Level 0 w SimPay](https://docs.simpay.pl/payment/blik/level0.md)
 - [BLIK Level 0 + OneClick (Płatności bez kodu)](https://docs.simpay.pl/payment/blik/level0_oneclick.md)
 - [Płatności Powtarzalne BLIK w SimPay](https://docs.simpay.pl/payment/blik/recurrent.md)
 - [BLIK Płacę Później (BNPL)](https://docs.simpay.pl/payment/postponed/blik-paylater.md)
 - [PayPo - Kup teraz, zapłać za 30 dni](https://docs.simpay.pl/payment/postponed/paypo.md)
 - [Twisto - Płatności odroczone i "Podziel na 3"](https://docs.simpay.pl/payment/postponed/twisto.md)
 - [Introduction to DirectBilling (DCB)](https://docs.simpay.pl/en/directbilling.md)
 - [Generating DirectBilling Transactions](https://docs.simpay.pl/en/directbilling/transaction.md)
 - [IPN Notifications - DirectBilling](https://docs.simpay.pl/en/notifications/directbilling.md)
 - [Online Payment Notification Handling (IPN v2)](https://docs.simpay.pl/en/notifications/payment-1.md)
 - [Direct Payments (directChannel)](https://docs.simpay.pl/en/payment/directchannel.md)
 - [Introduction - Online Payments](https://docs.simpay.pl/en/payment.md)
 - [List of Payment Methods](https://docs.simpay.pl/en/payment/methods.md)
 - [Refunds](https://docs.simpay.pl/en/payment/refunds.md)
 - [Statuses in SimPay](https://docs.simpay.pl/en/payment/statuses.md)
 - [SMS Premium](https://docs.simpay.pl/en/sms.md)
 - [Zdarzenie: blik:alias_status_changed](https://docs.simpay.pl/notifications/payment/events/blik_alias_status_changed.md)
 - [Zdarzenie: ipn:test](https://docs.simpay.pl/notifications/payment/events/ipn_test.md)
 - [Zdarzenie: subscription:status_changed](https://docs.simpay.pl/notifications/payment/events/subscription_status_changed.md)
 - [Zdarzenie: transaction_blik_level0:code_status_changed](https://docs.simpay.pl/notifications/payment/events/transaction_blik_level0_code_status_changed.md)
 - [Zdarzenie: transaction_refund:status_changed](https://docs.simpay.pl/notifications/payment/events/transaction_refund_status_changed.md)
 - [Zdarzenie: transaction:status_changed](https://docs.simpay.pl/notifications/payment/events/transaction_status_changed.md)
 - [Introduction to Online Payment IPN Notifications](https://docs.simpay.pl/en/notifications/payment.md)
 - [IPN Notification IP Address Validation](https://docs.simpay.pl/en/notifications/payment/ip-validation.md)
 - [Signature Verification](https://docs.simpay.pl/en/notifications/payment/signature.md)
 - [IPN Notification Structure and Handling](https://docs.simpay.pl/en/notifications/payment/structure.md)
 - [BLIK Level 0 Handling in SimPay](https://docs.simpay.pl/en/payment/blik/level0.md)
 - [BLIK Level 0 + OneClick (Payments without code)](https://docs.simpay.pl/en/payment/blik/level0_oneclick.md)
 - [BLIK Recurrent Payments in SimPay](https://docs.simpay.pl/en/payment/blik/recurrent.md)
 - [BLIK Pay Later (BNPL)](https://docs.simpay.pl/en/payment/postponed/blik-paylater.md)
 - [Twisto - Deferred Payments and "Split into 3"](https://docs.simpay.pl/en/payment/postponed/twisto.md)
 - [Event: blik:alias_status_changed](https://docs.simpay.pl/en/notifications/payment/events/blik_alias_status_changed.md)
 - [PayPo - Buy Now, Pay in 30 Days](https://docs.simpay.pl/en/payment/postponed/paypo.md)
 - [Event: ipn:test](https://docs.simpay.pl/en/notifications/payment/events/ipn_test.md)
 - [Event: subscription:status_changed](https://docs.simpay.pl/en/notifications/payment/events/subscription_status_changed.md)
 - [Event: transaction_blik_level0:code_status_changed](https://docs.simpay.pl/en/notifications/payment/events/transaction_blik_level0_code_status_changed.md)
 - [Event: transaction_refund:status_changed](https://docs.simpay.pl/en/notifications/payment/events/transaction_refund_status_changed.md)
 - [Event: transaction:status_changed](https://docs.simpay.pl/en/notifications/payment/events/transaction_status_changed.md)
 - [Changelog](https://docs.simpay.pl/en/changelog.md)
 - [simpay-api](https://docs.simpay.pl/apis.md)
 - [simpay-api](https://docs.simpay.pl/en/apis.md)