Across Protocol Development Skill

What this Skill is for

Use this Skill when the user asks for:

• Crosschain bridge or swap integration (any-to-any token transfers)
• Wallet or dApp integration with Across APIs
• Embedded crosschain actions (bridge + mint/stake/deposit in one tx)
• Deposit tracking and status monitoring
• Fee quoting, transfer limits, or route discovery
• Integrator fee collection setup
• On-chain intent construction (ERC-7683 / SpokePool deposits)
• Relayer operation or configuration
• Security review of crosschain integration code

Route type abbreviations

The Swap API classifies routes using a shorthand based on whether each token is directly bridgeable (B) or requires a swap to/from a bridgeable token (A = Any):