The Across API is being upgraded. V4 will be deprecated soon and integration support for V4 has ended. To learn more, reach out here.

Across DocsAcross Developer Documentation

Introduction Guides AI Agents Tools API Reference Chains & Contracts

Introduction

Welcome to Across Why Across Key Features API Keys & Integrator ID Across for Stablecoins Technical FAQ

Featured

Persistent Deposit Addresses Direct Route Linking

Developer Quickstart

Introduction to Swap API Working with Hypercore Hyperliquid Withdrawals

Fees in the System Actors in the System

Tracking Deposits and Refunds

Tracking Deposits Refunds

Relayers

Running a Relayer Relayer Nomination

Resources

The Bridge Across Bug Bounty Audits

Audits

Security audits of the Across Protocol and UMA smart contracts.

Across Audit References

Across V3 Incremental Audit
Across V3 Audit
Across Token and Token Distributor Audit
Across V2 Audit

UMA Audit References

UMA's Continuous Audit (Optimistic Oracle)
UMA Audit – L2 Bridges
UMA Audit – Phase 4
UMA Audit – Phase 6

Bug Bounty

Report vulnerabilities and earn rewards through the Across Protocol bug bounty program.

On this page

Across Audit References UMA Audit References