> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sprinter.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Sprinter Liquidity Integration Guide

> Guide for crosschain DeFi solvers to integrate with Sprinter Liquidity for on-demand credit borrowing

<Tip>
  Request your Sprinter Liquidity API key by dropping a Telegram DM to [@Sprinter\_Intern\_Bot](https://t.me/Sprinter_Intern_Bot) with `/request api key`
</Tip>

## For crosschain DeFi

Sprinter Liquidity enables solvers to **borrow crosschain credit on-demand** to execute user intents without needing pre-funded inventory.

## Overview of the fill lifecycle

<div style={{ paddingRight: "120px" }}>
  ```mermaid theme={null}
  flowchart TD
    A[Solver Detects User Intent] --> B[Solver Previews estimated borrowing quote]
    B --> C[Receive Borrow Quote Estimate]
    C --> D{Fill using Sprinter Liquidity?}
    D -- Yes --> E[Solver Reserves credit and authorizes the fill]
    D -- No --> F[Abort Fill]
    E --> G[Solver Borrows Liquidity from Sprinter]
    G --> H[Sprinter Executes Cross-Chain Swap/Bridge]
    H --> I[Intent Protocol Repays Borrowed Credit + Costs]
    I --> J[Fill Complete]
  ```
</div>