# 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 --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.defindex.io/api-integration-guide.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.