> For the complete documentation index, see [llms.txt](https://docs.zumrails.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zumrails.com/api-reference.md).

# API Reference

- [Overview](https://docs.zumrails.com/api-reference/overview.md)
- [Authentication](https://docs.zumrails.com/api-reference/authentication.md)
- [Users](https://docs.zumrails.com/api-reference/users.md)
- [Cards](https://docs.zumrails.com/api-reference/cards.md)
- [Transactions](https://docs.zumrails.com/api-reference/transactions.md)
- [Funding Source](https://docs.zumrails.com/api-reference/funding-source.md)
- [Products](https://docs.zumrails.com/api-reference/products.md)
- [Product Prices](https://docs.zumrails.com/api-reference/product-prices.md)
- [Invoices](https://docs.zumrails.com/api-reference/invoices.md)
- [Subscriptions](https://docs.zumrails.com/api-reference/subscriptions.md)
- [Aggregation](https://docs.zumrails.com/api-reference/aggregation.md)
- [Insights](https://docs.zumrails.com/api-reference/insights.md): Follow this documentation to see what are the endpoints you can call to get all about Insights.
- [Wallets](https://docs.zumrails.com/api-reference/wallets.md)
- [Credit Trade Reports](https://docs.zumrails.com/api-reference/credit-trade-reports.md): Credit Trade Reports are sent to the credit bureau's monthly.
- [Operations](https://docs.zumrails.com/api-reference/operations.md)
- [Transaction Limits](https://docs.zumrails.com/api-reference/operations/transaction-limits.md)
- [Review Transactions](https://docs.zumrails.com/api-reference/operations/review-transactions.md)
- [Daily Auto-Withdrawal Summary](https://docs.zumrails.com/api-reference/operations/daily-auto-withdrawal-summary.md)
- [Webhooks](https://docs.zumrails.com/api-reference/webhooks.md)
- [Errors](https://docs.zumrails.com/api-reference/errors.md)
- [Idempotency](https://docs.zumrails.com/api-reference/idempotency.md)
- [Country & Region Codes](https://docs.zumrails.com/api-reference/country-and-region-codes.md)
- [Encryption](https://docs.zumrails.com/api-reference/encryption.md): To protect sensitive data, our API support certain fields to be encrypted before transmission. This page explains how to encrypt data using RSA 2048-bit with OAEP padding and SHA-256.


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