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Sprinter Stash
Sprinter's crosschain credit protocol providing liquidity access to solvers and market makers without requiring collateral.
How Stash Works
- Liquidity Providers deposit USDC into Stash, earning yield from solver fees, passive yield and protocol incentives.
- Stash dynamically allocates liquidity across supported chains based on solver demand using algorithmic management and rebalancing.
- Solvers request and borrow liquidity on destination instantly, without collateral, enabling seamless crosschain execution.
- Once fills are completed, Stash receives funds on the source chain, repays the credit, and distributes profits to LPs and solvers.
Stash Fill Lifecycle
Features & Utility
For Liquidity Providers
- Earn passive yield, solver-generated fees and protocol incentives.
- Participate in liquidity mining campaigns for SPRNT rewards.
- Benefit from protocol-managed inventory strategies.
For Solvers
- Reduce capital requirements by borrowing liquidity on demand.
- Eliminate need to manage inventory across chains.
- Improve execution efficiency with shared liquidity access.
How Stash Enables Zero-Collateral Loans
Sprinter Stash enables solvers to borrow liquidity with near zero collateral, and achieves this through a series of mechanisms below:
1. Approved Solvers
On launch only approved solvers can access Stash credit. These solvers:
- Undergo screening and onboarding by the Sprinter team
- Must use authenticated API keys tied to their accounts
- Are rate-limited and monitored to ensure responsible usage
Sprinter also tracks solver performance and creditworthiness over time. Solvers who consistently repay on time may be granted higher limits, while misbehavior results in penalties or revoked access with both informed through regular reviews of:
- Fill accuracy and repayment behavior
- Volume solved and protocols interacted with
- On-chain and off-chain repayment events
2. Transaction-Level Guarantees
Each fill is validated against the user’s original intent using:
- Verified source deposits (e.g. via Across)
- MPC-signed authorization signatures
- Controlled function execution (via calldata)
Sprinter acts as an intermediary: the solver never touches user funds directly. The system ensures that repayment is guaranteed by the user's transaction on the source chain before the solver receives liquidity.
3. Protocol Guardrails & Limits
Sprinter enforces:
- Per-solver daily limits (to minimize exposure)
- Per-transaction liquidity caps
- Circuit breakers triggered by irregular repayment behavior
- Slashing (or bond requirements) for higher-risk integrations
4. Bonding Pools
Sprinter will also allow Solver Operators to create Bonding Pools, that escrow funds to vouch for their solvers, enabling more favourable borrowing conditions. Sprinter Bonding Pools will be controlled by governance and similarly allow slashing by governance for any malicious activity or violations.
Supported Networks
- Arbitrum
- Optimism
- Base
- Ethereum Mainnet (coming soon)
Supported Assets
- Stablecoins: USDC, DAI, USDT
- Blue-Chip: WETH, WBTC
Want to request support for a new chain or asset? Submit a request.
Stash Fees
Sprinter Stash handles crosschain liquidity fills. Revenue is generated from the spread between between the amount the user deposited on source and the amount provided on the destination.
Revenue Components
- Fill Revenue: Amount user deposits on source - amount send to user on destination
- Borrow Costs: Cost of liquidity borrowing and crosschain repayment.
- Solver Costs: Gas fees and execution costs fronted by solvers.
Profit Calculation
Fill Profit = Fill Revenue - Borrow Costs - Solver Costs
Monthly Distribution
- Withdraw raw profits from liquidity pools.
- Deduct solver gas costs.
- Distribute monthly fill profits to:
| Actor | Description | Fill Profit % |
|---|---|---|
| Solvers | For executing fills | 50% |
| LPs | For providing liquidity | 50% |
| Treasury | Protocol growth & sustainability fund | TBD |
➡️ Initial fee split is reviewed monthly by governance.