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This feature is under active development. Implementation details may evolve as we validate approaches for performance, security, and compatibility.
Plasma allows users to pay for any transaction using whitelisted ERC-20 tokens like USD₮ or BTC. There is no need to hold or manage the native token (XPL). This improves UX while preserving full EVM compatibility. The feature is powered by a protocol-managed ERC-20 paymaster maintained by Plasma. Developers do not need to run or integrate their own gas abstraction logic. Wallets can support stablecoin-native flows with minimal changes.

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Why it Matters

Most chains still require users to hold a native token for gas. This breaks the user experience for stablecoin-first apps. External paymasters attempt to solve this, but they introduce their own tradeoffs:
  • They often charge a fee or markup
  • Pricing and access controls are inconsistent
  • Reliability depends on third-party funding and uptime
Plasma takes a different approach. The protocol operates a standard EIP-4337 paymaster that enables seamless, fee-free gas payments in stablecoins. This removes friction for users and avoids complexity for developers.

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How it Works

  1. Token selection: The user selects an approved stablecoin such as USD₮ or BTC.
  2. Oracle pricing: The paymaster calculates the equivalent gas cost using trusted oracle rates.
  3. Approval: The user pre-approves the paymaster to spend the required amount.
  4. Execution: The paymaster covers gas in XPL and deducts the stablecoin from the user.
This flow works with both standard EVM accounts and EIP-4337 smart wallets.

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Developer Integration

There is no custom logic required. To support custom gas tokens:
  • Use any standard account or smart wallet
  • Request token approval for the paymaster
  • Submit transactions through the supported interface
The Plasma paymaster handles gas payment, pricing, and enforcement behind the scenes.

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Supported Tokens

Initial support includes:
  • USD₮ on Plasma
  • BTC bridged via pBTC
Additional stablecoins may be added over time based on usage, liquidity, and volatility.

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Why it Lives in the Protocol

Fee abstraction is hard to standardize when left to individual teams. By operating this infrastructure directly, Plasma can:
  • Guarantee consistent behavior across apps
  • Offer fee-free gas payments with no markup
  • Enforce access rules and rate limits
  • Align incentives with the network’s goals
This lets developers focus on their product logic, while users benefit from a seamless stablecoin-native experience.
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