# Nadles Documentation

## Docs

- [Query syntax](https://docs.nadles.com/analytics/query-syntax.md)
- [Add API](https://docs.nadles.com/api-management/add-api.md): You can add a new API either by importing an OpenAPI specification or by filling out the form manually.
- [API key management](https://docs.nadles.com/api-management/api-key-management.md)
- [Custom domain](https://docs.nadles.com/api-management/custom-domain.md)
- [Additional information](https://docs.nadles.com/api-management/nadles-api-gateway.md)
- [Securing your backend](https://docs.nadles.com/api-management/securing-your-backend.md): Make sure your API accepts requests originating from Nadles.
- [API settings](https://docs.nadles.com/api-management/settings.md): You can always change the configuration of your API on the Settings page.
- [Request and response transformations](https://docs.nadles.com/api-management/transformations.md): API-scoped modifications of requests and responses.
- [User authentication](https://docs.nadles.com/api-management/user-authentication.md): Configure how Nadles authenticates your API consumers.
- [Create usage events for a subscription](https://docs.nadles.com/api/provider/create-usage-events-for-a-subscription.md)
- [Get customer by ID](https://docs.nadles.com/api/provider/get-customer-by-id.md)
- [List access tokens for subscription](https://docs.nadles.com/api/provider/list-access-tokens-for-subscription.md)
- [List customer subscriptions](https://docs.nadles.com/api/provider/list-customer-subscriptions.md)
- [List customers](https://docs.nadles.com/api/provider/list-customers.md)
- [List subsciption billable metrics, quotas and current usage](https://docs.nadles.com/api/provider/list-subsciption-billable-metrics-quotas-and-current-usage.md)
- [Components](https://docs.nadles.com/components.md)
- [Introduction](https://docs.nadles.com/introduction.md)
- [F.A.Q.](https://docs.nadles.com/other/faq.md)
- [Paddle](https://docs.nadles.com/payment-integration/paddle.md)
- [Stripe](https://docs.nadles.com/payment-integration/stripe.md)
- [Create prices](https://docs.nadles.com/pricing/create-price.md)
- [Overview](https://docs.nadles.com/pricing/overview.md)
- [Billing for AI tokens usage](https://docs.nadles.com/products/ai-and-llm-billing.md)
- [Billable metrics](https://docs.nadles.com/products/billable-metrics.md)
- [Create product](https://docs.nadles.com/products/create.md)
- [Modifying products](https://docs.nadles.com/products/modifying-products.md)
- [Overview](https://docs.nadles.com/products/overview.md)
- [Rate limits](https://docs.nadles.com/products/rate-limits.md)
- [Rejection rules](https://docs.nadles.com/products/rejection-rules.md)
- [Request / response transformations](https://docs.nadles.com/products/transformations.md): Product-scoped modifications of requests and responses.
- [Quickstart](https://docs.nadles.com/quickstart.md): Start collecting payments for your API in under 10 minutes.
- [One-time charges](https://docs.nadles.com/subscriptions/one-time-charges.md)
- [Overview](https://docs.nadles.com/subscriptions/overview.md)
- [Upgrades and downgrades](https://docs.nadles.com/subscriptions/upgrades-and-downgrades.md)
- [Adding pages](https://docs.nadles.com/user-portal/adding-pages.md)
- [API](https://docs.nadles.com/user-portal/api.md)
- [Checkout links](https://docs.nadles.com/user-portal/checkout-links.md)
- [Custom domain](https://docs.nadles.com/user-portal/custom-domain.md)
- [Getting started](https://docs.nadles.com/user-portal/getting-started.md)
- [HTML and JavaScript](https://docs.nadles.com/user-portal/html-and-javascript.md)
- [Pricing page](https://docs.nadles.com/user-portal/pricing-page.md)
- [Styling](https://docs.nadles.com/user-portal/style-user-portal.md)

## OpenAPI Specs

- [provider.api](https://docs.nadles.com/openapi/provider.api.yaml)

## Optional

- [Go to website](https://www.nadles.com/)