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

# API Integration Guide

- [Introduction](https://docs.defindex.io/api-integration-guide/api.md): ⏱️ 2 min read
- [Interact with your Vault](https://docs.defindex.io/api-integration-guide/smart-contracts.md): ⏱️ 4 min read
- [Deposit](https://docs.defindex.io/api-integration-guide/smart-contracts/deposit.md): ⏱️ 2 min read
- [Withdraw](https://docs.defindex.io/api-integration-guide/smart-contracts/withdraw.md): ⏱️ 2 min read — This section covers the withdraw functions on a Vault. You can do this in 3 ways: through Smart Contract, Through API or through SDK.
- [Get Balance](https://docs.defindex.io/api-integration-guide/smart-contracts/get-balance.md): ⏱️ 1 min read
- [Get APY](https://docs.defindex.io/api-integration-guide/smart-contracts/get-apy.md): ⏱️ 1 min read
- [Manage your Vault](https://docs.defindex.io/api-integration-guide/smart-contracts/manage-your-vault.md): ⏱️ 2 min read
- [Create a Vault](https://docs.defindex.io/api-integration-guide/creating-a-defindex-vault.md): ⏱️ 3 min read
- [Using GUI (Basic)](https://docs.defindex.io/api-integration-guide/creating-a-defindex-vault/using-gui-basic.md): ⏱️ 2 min read
- [Using the Factory (Advanced)](https://docs.defindex.io/api-integration-guide/creating-a-defindex-vault/using-the-factory-advanced.md): ⏱️ 5 min read
- [Guides and Tutorials](https://docs.defindex.io/api-integration-guide/guides-and-tutorials.md): ⏱️ 1 min read
- [Getting Your API Key](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/getting-api-key.md): ⏱️ 2 min read
- [Beginner Guide](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/beginner-guide.md): ⏱️ 5 min read
- [Setting Partner Fees](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/setting-partner-fees.md): ⏱️ 7 min read
- [Deposit & Transfer dfTokens](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/deposit-and-transfer-dftokens.md): ⏱️ 7 min read
- [Sponsored Transactions (Fee Bump Tx)](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/sponsored-transactions.md): ⏱️ 4 min read
- [Privy Server Wallets](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/privy-server-wallets.md): ⏱️ 3 min read
- [Crossmint Smart Wallets](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/crossmint-smart-wallets.md): ⏱️ 3 min read
- [AI Tools (MCP & Skill)](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/ai-tools.md): ⏱️ 3 min read
- [Additional Resources](https://docs.defindex.io/api-integration-guide/guides-and-tutorials/additional-resources.md): ⏱️ 1 min read
- [Troubleshooting](https://docs.defindex.io/api-integration-guide/troubleshooting.md): ⏱️ 15 min read