Crypto Gloss

Spark Protocol

Spark Protocol is MakerDAO’s answer to a decade-old question: why should users borrow DAI elsewhere when they could borrow it directly from the issuer at the best rates? Running on an Aave V3 fork with special liquidity integration to Maker’s Direct Deposit Module (DDM), Spark can offer DAI/USDS borrowing rates directly set by MakerDAO governance — often the cheapest rates in DeFi for DAI borrowing. As MakerDAO transitioned to the “Sky” rebrand (DAI → USDS, MKR → SKY), Spark became the flagship DeFi product of the Sky ecosystem, offering everything from basic collateralized borrowing to savings products and soon cross-chain deployments. For users wanting to borrow stablecoins against ETH or wBTC, Spark offers the simplest and most direct path.

Background: Why MakerDAO Built Spark

The original Maker CDP system:

MakerDAO’s original product was “Collateralized Debt Positions” (CDPs) — vaults where users lock ETH → mint DAI. The UI was Oasis.app. The rates were governance-set “stability fees.” But Oasis was clunky and the UX lagged modern DeFi.

Aave V3 fork strategy:

Rather than building lending infrastructure from scratch, Spark forked Aave V3 — battle-tested, audited code with a proven user experience. The key addition: Spark has a special integration with Maker’s DAI Direct Deposit Module (D3M or Direct Deposit Module) that allows unlimited DAI liquidity at governance-set rates.

The competitive advantage:

  • On Aave, DAI borrow rate is determined by market supply/demand
  • On Spark, DAI borrow rate is set directly by MakerDAO governance (currently ~5.5–6.5%, adjustable)
  • Spark can offer the “floor” rate for DAI borrowing in DeFi because it IS the issuer

Core Products

The main product offerings are described below.

SparkLend

Collateral types: ETH, wstETH, wBTC, WBTC, rETH, and other approved assets

Borrowing:

  • Borrow DAI or USDS against approved collateral
  • Rate set by MakerDAO governance (not algorithmic like Aave)
  • Direct integration with Maker’s DSR (Dai Savings Rate) for liquidity management

Supplying:

  • Deposit ETH, wstETH, DAI, USDS, USDC for yield
  • sDAI/sUSDS (Savings DAI/Savings USDS) suppliersearn the current DSR/SSR rate automatically

sDAI / sUSDS (Savings Tokens)

sDAI is an interest-bearing wrapper around DAI:

  • Hold DAI in the Maker DSR → earn yield
  • sDAI is the tokenized, transferable version of that DSR position
  • Composable with other DeFi protocols: use sDAI as collateral, LP with sDAI

sUSDS is the same for USDS (the post-Sky-rebrand DAI equivalent):

  • USDS replaces DAI in the Sky rebranded system
  • sUSDS earns the Sky Savings Rate (SSR), set by Sky governance

Why these matter:

sDAI/sUSDS are among the most compelling “yield-bearing stablecoin” primitives in DeFi — backed by the largest decentralized stablecoin issuer, earning yield from Maker’s RWA and collateral revenue.

SparkConduits

Conduits are automated liquidity management contracts that route excess DAI/USDS into Maker’s balance sheet efficiently, ensuring Spark always has deep liquidity while not leaving idle cash on the table.

Integration with MakerDAO / Sky Ecosystem

Spark is the retail DeFi face of MakerDAO’s ecosystem:

DAI Direct Deposit Module (D3M):

  • Maker governance sets a “debt ceiling” for Spark borrowing
  • Spark can mint new DAI up to this ceiling at the governance-set stability fee
  • This creates effectively unlimited DAI liquidity for Spark borrows (up to ceiling)
  • Users get the best DAI borrow rate because the “lender” is the issuer itself

DSR (Dai Savings Rate):

  • Maker governance sets the DSR — the annualized interest rate paid on DAI held in the Maker DSR contract
  • sDAI earns this rate
  • Funded by Maker’s protocol revenue (primarily RWA yield)
  • Currently one of the highest risk-adjusted stablecoin yields in DeFi

Sky Transition (2024):

  • MakerDAO rebranded to Sky; DAI remains but USDS is the “upgraded” stablecoin
  • sUSDS/SSR replaces sDAI/DSR as the primary savings product
  • Spark supports both (DAI and USDS) in a dual-token environment during transition

Spark vs. Aave V3

Aspect Spark Aave V3
DAI/USDS borrow rate Governance-set (often cheaper) Market-determined
Liquidity Virtually unlimited (D3M) Supply-constrained
Collateral types Focused on ETH/wBTC Broader
Savings yield sDAI/sUSDS (DSR/SSR mechanism) aTokens (market rates)
Audit basis Aave V3 fork Aave V3
Revenue destination MakerDAO/Sky DAO Aave DAO

Cross-Chain Expansion

Spark is deploying on multiple chains in 2024–2025:

  • Base: SparkLend on Base for USDS borrowing
  • Arbitrum: Planned deployment
  • Each chain uses USDS bridged from Ethereum with local liquidity pools

Social Media Sentiment

Spark is well-regarded in DeFi as a clean, well-maintained product backed by Maker’s extensive multi-year security track record. The competitive DAI/USDS borrowing rates are frequently cited as the reason to prefer Spark over Aave for DAI-specific borrowing strategies. The sDAI/sUSDS narrative (yield-bearing stablecoin backed by Maker’s RWA revenue) has resonated strongly in DeFi portfolio construction discussions — many protocols use sDAI as a “productive cash” position earning yield while maintaining liquidity for deployment. The Sky rebranding (Maker → Sky, DAI → USDS) has been controversial in the community — the new branding is seen by some as unnecessary complexity, by others as a necessary evolution for mainstream appeal. Spark’s product quality is generally considered one of the best DeFi user experiences. The protocol’s conservative growth philosophy (Maker governance sets rates cautiously) means Spark is less exciting than newer protocols but represents the most battle-tested option in its category.

Last updated: 2026-04

How to Use Spark

  1. Get ETH or wBTC via
  2. Visit spark.fi
  3. Connect wallet; supply collateral; borrow DAI or USDS
  4. Optionally: hold sDAI/sUSDS for yield on stablecoin balances

Secure ETH with a hardware wallet:

Related Terms

Sources

Arora, D., Bhattacharya, P., & Prasad, R. (2022). On the Stability of Algorithmic Stablecoins: An Empirical Investigation. Journal of Risk and Financial Management, 15(8), 363.

Klages-Mundt, A., Harz, D., Gudgeon, L., Liu, J. Y., & Perez, D. (2020). Stablecoins 2.0: Economic Foundations and Risk-based Models. ACM CCS DeFi Workshop.

Gudgeon, L., Werner, S., Perez, D., & Knottenbelt, W. J. (2020). DeFi Protocols for Loanable Funds: Interest Rates, Liquidity and Market Efficiency. ACM Financial Cryptography.

Perez, D., Werner, S. M., Xu, J., & Livshits, B. (2021). Liquidations: DeFi on a Knife’s Edge. Financial Cryptography and Data Security.

Werner, S. M., Perez, D., Gudgeon, L., Klages-Mundt, A., Harz, D., & Knottenbelt, W. J. (2022). SoK: Decentralized Finance (DeFi). ACM Financial Cryptography.