# Overview Cap consists of the six main modules: 1. [**Vault**](/concepts/vault.md): Stores reserve assets and issues cUSD tokens, providing liquidity to the Lender 2. [**Lender**](/concepts/lender.md): Handles borrowing, repayment, liquidation, and interest calculations 3. [**Fee Auction**](/concepts/fee-auction.md): Converts generated yield and fees to cUSD via a Dutch auction 4. [**Delegation**](/concepts/delegation.md): Connects to Shared Security Networks for delegated collateral, rewards, and liquidation 5. [**Oracles**](/concepts/oracles.md): Price oracles for asset valuation and rate oracles for interest calculations 6. [**Access Controls**](/concepts/access-controls.md): Function-level granular access controls across all protocol operations --- # 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.cap.app/concepts/overview.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.