> ## Documentation Index > Fetch the complete documentation index at: https://autoloans.liquidity.io/llms.txt > Use this file to discover all available pages before exploring further. # Introduction Loan Lifecycle Banner # Welcome to the LQDTY Chain Loan Servicing API ## Overview The **LQDTY Chain** offers a decentralized, transparent, and programmable infrastructure for managing the complete lifecycle of digital loans. Designed for financial institutions, fintechs, and service providers, this API enables secure interactions across various stages of a loan — from application to repayment and beyond. Our loan servicing protocol is powered by smart contracts and NFT-based representations, ensuring automation, auditability, and compliance across all participants. ## What You Can Do with This API With this suite of APIs, developers can: * Submit and manage digital loan applications * Trigger and track underwriting, document verification, and approval workflows * Request and validate collateral * Disburse funds securely on-chain * Monitor repayment schedules and default events * Access borrower communications and servicer notices * Securely store and fetch off-chain PII and financial data ## The Loan Lifecycle on LQDTY Each loan progresses through a well-defined set of on-chain states: 1. **Application Submission** → Borrower initiates the process 2. **Document Collection & Verification** → For due diligence 3. **Underwriting** → Risk and terms assessment 4. **Collateral Management** → Request, deposit, and approve 5. **Loan Disbursement** → Funds are released on-chain 6. **Repayment Initiation & Tracking** → Repayment schedule begins 7. **Closure / Default Handling** → Based on repayment performance At every stage, API endpoints facilitate state transitions and update relevant metadata in a role-based, secure manner. ## NFT-Based Loan Representation The LQDTY protocol uses two non-fungible tokens (NFTs) to represent loan positions: * **Loan Obligation NFT**: Non-transferable, issued to the borrower as a digital representation of the loan agreement and repayment responsibility. * **Lender Certificate NFT**: Transferable, issued to the lender and representing rights to future cash flows — enabling secondary market trades or securitization. This dual-token system ensures compliance, transparency, and liquidity for all stakeholders. ## Data Architecture Our system separates loan data into three categories: * **On-Chain**: Loan state, principal, interest, repayment status, NFTs, and lifecycle transitions * **Off-Chain (Non-PII)**: Metadata, repayment history, contract terms (hashed or plaintext) * **Off-Chain (PII)**: Borrower details, contact information, employment history — encrypted and securely stored ## Key Features * 📄 **Role-Based Access**: Granular control for lenders, servicers, and borrowers * 🔐 **Secure PII Handling**: PII is encrypted using Bearer-token access * 🔁 **Programmable Workflows**: Every loan stage can be advanced via API calls * 📊 **Verifiable On-Chain State**: Lifecycle states are tamper-proof and audit-friendly * 🛠️ **Developer Friendly**: Consistent endpoint design and payload schemas ## Start Exploring * 📘 [Loan Lifecycle Guide](./loan-lifecycle) * 🔐 [Authentication & Access Control](./authentication) * 🧾 [Full API Reference](./api-reference/loans/get-loan) *** Powering secure, transparent, and programmable lending for the digital economy.