0x Gasless API

0x Gasless API is an end-to-end gasless infrastructure solution that eliminates gas fees as a barrier to user adoption in Web3 applications. By abstracting away the complexities of gas payments, the API enables developers to create frictionless trading experiences where users can swap tokens without needing to hold native tokens for gas.

The Problem It Solves

Traditionally, users must:

• Hold native tokens (ETH, MATIC, etc.) to pay gas fees
• Perform separate approval transactions (which cost gas)
• Maintain token balances for every subsequent transaction

This creates significant friction that leads to abandoned trades and lost conversions.

How Gasless API Works

Gasless API provides a comprehensive solution covering both approvals and swaps:

Gasless Approvals

First-time token approvals are handled without requiring users to pay gas, removing the initial friction point.

Gasless Swaps

All subsequent token swaps are executed without gas fees visible to users. Gas costs are abstracted into the backend infrastructure.

User Protection

Built-in MEV protection through proprietary Slippage Protection and Request for Quote (RFQ) orders from private market makers shield users from value extraction.

Supported Networks

Gasless API is available on:

• Ethereum
• Arbitrum
• Optimism
• Base
• Polygon
• Avalanche
• Blast
• BNB Smart Chain
• Mantle
• Scroll

More chains coming soon.

Composability

Gasless API is fully composable with Swap API, allowing developers to offer users execution optionality. Users can opt in and out of gasless transactions without sacrificing user experience.

Success Story

Robinhood built the first self-custody wallet with no network fees using 0x Gasless API, demonstrating the product's capability to power mainstream consumer applications.

Benefits for Businesses

• Improved Onboarding: Users can start trading immediately with any token in their wallet
• Higher Conversion: Remove the biggest drop-off point in the trading funnel
• Fast Setup: Integrate with just a few lines of code
• Competitive Advantage: Differentiate your app with superior UX