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

# Getting started

- [Quick Start Guide](https://docs.catfee.io/en/getting-started/quickstart.md)
- [Buy Energy via Direct TRX Transfer](https://docs.catfee.io/en/getting-started/buy-energy-via-transfer-on-catfee.md): Buy energy via direct TRX transfer on TRON network.
- [Buy Energy via DApp](https://docs.catfee.io/en/getting-started/buy-energy-via-dapp-on-catfee.md): Buy Energy on TRON network  through your wallet's DApp browser
- [Buy Energy via API](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee.md)
- [API Overview](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee/api-overview.md): Buy energy via API on TRON network.
- [Java Example for Calling API](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee/java.md): Java Example for Calling the CatFee.IO REST API
- [Python Example for Calling API](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee/python.md): Python Example for Calling the CatFee.IO REST API
- [PHP Example for Calling API](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee/php.md): PHP Example for Calling the CatFee.IO REST API
- [Node.js Example for Calling API](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee/nodejs.md): Node.js Example for Calling the CatFee.IO REST API
- [Go Example for Calling API](https://docs.catfee.io/en/getting-started/buy-energy-via-api-on-catfee/go.md): Golang Example for Calling the CatFee.IO Rest API
- [API Supports Idempotency](https://docs.catfee.io/en/getting-started/api-supports-idempotent-requests.md)
- [Webhook](https://docs.catfee.io/en/getting-started/webhook.md): A developer guide to webhook payloads, delegation business types, version compatibility, response requirements, retries, and configuration.
- [Energy Subleasing](https://docs.catfee.io/en/getting-started/what-is-energy-sublet-on-catfee.md)
- [Flash Refill](https://docs.catfee.io/en/getting-started/flash-energy-service.md)
- [Telegram Premium Reselling](https://docs.catfee.io/en/getting-started/telegram-premium-reseller-on-catfee.md)
- [Instant Swap](https://docs.catfee.io/en/getting-started/trx-instant-swap-business.md): CatFee Instant Swap guide
- [Address Monitor](https://docs.catfee.io/en/getting-started/blockchain-monitoring-service.md): 🔍 CatFee Address Monitor 📊 CatFee Address Monitor helps users track real-time blockchain data changes, such as transactions, balances, and blocks.
- [TRON Node Connection Guide](https://docs.catfee.io/en/getting-started/tron-node-guide.md)
- [Quick Start Guide](https://docs.catfee.io/en/getting-started/tron-node-guide/quick-start.md): This guide helps you complete CatFee TRON Node integration and calls within minutes.
- [Pricing Plan](https://docs.catfee.io/en/getting-started/tron-node-guide/pricing-plan.md): This page introduces the pricing plans and resource configurations for CatFee TRON Node, suitable for DApps and blockchain applications of different sizes.
- [Frequently Asked Questions (FAQ)](https://docs.catfee.io/en/getting-started/faq.md)
- [Terms of Service](https://docs.catfee.io/en/getting-started/terms-of-service.md)