# Teya Developer Documentation

> Official integration guides and API specifications for Teya payments.

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## Online payments for businesses

- [Overview](https://docs.teya.com/online-payments/overview.md): Choose an integration for your own business.
- [Authentication](https://docs.teya.com/online-payments/authenticate.md): Credentials and access tokens.
- [Hosted Checkout](https://docs.teya.com/online-payments/hosted-checkout/get-started.md): Accept payments on a Teya-hosted page.
- [Hosted Checkout customization](https://docs.teya.com/online-payments/hosted-checkout/customize.md): Session options, including saving a payment method.
- [Card on File](https://docs.teya.com/online-payments/saved-payments/overview.md): Save cards with customer consent for future payments.
- [Charge a saved payment method](https://docs.teya.com/online-payments/saved-payments/charge.md): Charge a token for customer-initiated or merchant-initiated payments.
- [Payment Actions](https://docs.teya.com/online-payments/payment-actions.md): Capture authorised funds, issue refunds, and send digital receipts.
- [Webhooks](https://docs.teya.com/online-payments/webhooks.md): Receive payment events and saved-card tokens.
- [Webhook Signature Validator](https://docs.teya.com/online-payments/webhook-signature-validator.md): Test webhook signature verification.
- [Testing](https://docs.teya.com/online-payments/testing.md): Test cards and integration checks.
- [Troubleshooting](https://docs.teya.com/online-payments/troubleshooting.md): Diagnose common online payment integration issues.

## Partners

- [Partner overview](https://docs.teya.com/partners/overview.md): Build integrations for the merchants you serve.
- [Partner Card on File](https://docs.teya.com/partners/online-payments/saved-payments/overview.md): Save cards for a partner's merchants.
- [Partner Payment Actions](https://docs.teya.com/partners/online-payments/payment-actions.md): Capture authorised funds, issue refunds, and send digital receipts for merchants.
- [Partner Webhooks](https://docs.teya.com/partners/online-payments/webhooks.md): Receive merchant payment events and saved-card tokens.
- [Partner Webhook Signature Validator](https://docs.teya.com/partners/online-payments/webhook-signature-validator.md): Test merchant webhook signature verification.
- [Partner Testing](https://docs.teya.com/partners/online-payments/testing.md): Test cards and integration checks for partners.
- [Partner Troubleshooting](https://docs.teya.com/partners/online-payments/troubleshooting.md): Diagnose common partner online payment integration issues.

## API specifications

- [Online Payments OpenAPI](https://docs.teya.com/apis/online-payments/openapi.yaml): Checkout sessions, online transactions, saved-card tokens, refunds and captures.
- [POSLink OpenAPI](https://docs.teya.com/apis/poslink/openapi.yaml): Integrate with Teya card machines.
- [Payments OpenAPI](https://docs.teya.com/apis/payments/openapi.yaml): Payments API endpoints and schemas.
- [Dynamic Currency Conversion OpenAPI](https://docs.teya.com/apis/dynamic-currency-conversion/openapi.yaml): Dynamic currency conversion endpoints and schemas.