Use cases
Payments
Power branded payments across your app, platform, or merchant network. Fully backed and instantly redeemable for USDC.
Loyalty and rewards
Hold customer balances in your branded stablecoin, earn rewards on circulating supply and put that revenue back into user incentives or cashback.
Treasury
Run internal settlements and B2B payments while generating revenue on your circulating supply.
DeFi protocols
Integrate a custom stablecoin into your protocol with instant USDC liquidity for users.
Key features
- 1:1 USDC backing: Fully backed by USDC reserves on Coinbase
- Instant swaps: Single-transaction settlement
- Predictable pricing: Fixed 1:1 ratio with no slippage surprises
- Multi-chain support: Available on EVM chains (Base) and SVM chains (Solana) today, with additional chain support available on request
- Flexible integration: Use via direct smart contract calls (EVM chains) or Cross-Program Invocation (SVM chains)
- Multi-decimal support: Automatic normalization between tokens with different decimal precision
- Prime API support: Convert and withdraw custom stablecoins programmatically via Coinbase Prime
Supported networks
Base (EVM) and Solana (SVM) are supported today. Additional EVM and SVM chains are available on request — contact Coinbase to discuss support for your preferred network.| Network | VM type | Use case | Contract type |
|---|---|---|---|
| Base Sepolia | EVM | Testing and development | EVM smart contract |
| Base Mainnet | EVM | Production use | EVM smart contract |
| Solana Devnet | SVM | Testing and development | Anchor program |
| Solana Mainnet | SVM | Production use | Anchor program |
Onchain conversions
Stableswapper is the onchain liquidity program that powers instant swaps between USDC and any Custom Stablecoin issued through the program. It is deployed on both EVM chains (Base) and SVM chains (Solana), providing the settlement layer partners need to let their users move freely between custom tokens and USDC. Learn how to integrate swaps into your application.How it works
The Stableswapper program maintains a liquidity pool with reserves for each supported token.Validation
The program checks the allowlist (if enabled), validates slippage protection, and applies any configured fee
Concepts
- Ethereum Virtual Machine
- Solana Virtual Machine
| Concept | Description |
|---|---|
| ERC-20 | The standard token interface used by all supported stablecoins on Base |
| Allowlist | An optional on-chain list of authorized addresses. When enabled, only allowlisted addresses can initiate swaps |
| Fee basis points | Swap fee expressed in basis points (1 bp = 0.01%) |
| Decimal normalization | Automatic conversion between tokens with different decimal precision (e.g., 6 vs 18 decimals) |
| Slippage | The minimum acceptable output amount (minAmountOut). Protects against fee changes between transaction construction and execution |
Prime conversions
Partners with Coinbase Prime accounts can convert between USDC and custom stablecoins using the Prime Conversion API, and withdraw converted tokens to onchain wallets. This path is ideal for institutional workflows and Prime-custodied assets. Learn more in the Prime Conversions guide.What to read next
Quickstart
Get up and running with your first swap in 10 minutes
Reference
Swap instruction parameters and accounts
Production Readiness
Helper functions, error handling, and best practices
Key Addresses
Program IDs, contract addresses, and token mints
Prime API
Convert and withdraw custom stablecoins via Coinbase Prime