Operation Encoding

Operations are produced by encoding them into compact byte arrays that follow a consistent structure. The 1delta protocol supports multiple operation categories, each with specific encoding patterns and use cases.

Operation Categories

1. Transfer Operations (TRANSFERS = 0x40)

Transfer operations handle token movements, approvals, and wrapping operations.

Key Features:

• Token transfers between addresses
• Token approvals for spending
• Native token wrapping/unwrapping
• Permit2 operations

Common Use Cases:

• Moving tokens into position for lending
• Transferring profits to user
• Setting up approvals for protocols
• Wrapping/unwrapping native tokens

2. Swap Operations (SWAPS = 0x10)

Swap operations enable trading across multiple DEX protocols with advanced routing.

Key Features:

• DEX swaps across multiple protocols
• Multi-hop swap routing
• Flash swap callbacks
• Slippage protection

Supported Protocols:

• Uniswap V2/V3
• Balancer V2/V3
• Curve
• Dodo
• WooFi
• GMX
• And more...

3. Lending Operations (LENDING = 0x30)

Lending operations provide access to various lending protocols through a unified interface.

Key Features:

• Deposit/withdraw collateral
• Borrow/repay debt
• Cross-protocol operations
• Position management

Supported Protocols:

• Aave V2/V3
• Compound V2/V3
• Morpho Blue
• And more...

4. Flash Loan Operations (FLASH_LOAN = 0x60)

Flash loan operations enable instant borrowing without collateral, requiring repayment within the same transaction.

Key Features:

• Instant borrowing without collateral
• Arbitrage opportunities
• Liquidation protection
• Complex DeFi strategies

Supported Providers:

• Morpho Blue
• Aave V2/V3
• Balancer V2

5. External Calls (EXT_CALL = 0x20, EXT_TRY_CALL = 0x21)

External call operations enable integration with arbitrary smart contracts.

Key Features:

• Integration with external protocols
• Fallback mechanisms (EXT_TRY_CALL)
• Complex interaction patterns
• Custom contract calls

6. ERC4626 Vault Operations (ERC4626 = 0x70)

ERC4626 operations provide standardized access to yield vaults.

Key Features:

• Deposit to yield vaults
• Withdraw from vaults
• Share management
• Standardized vault interface

7. Modern DEX Operations (GEN_2025_SINGELTONS = 0x80)

Modern DEX operations support Balancer V3 and Uniswap V4 features.

Key Features:

• Balancer V3 operations
• Uniswap V4 operations
• Advanced liquidity management
• Singleton contract patterns

8. Bridge Operations (BRIDGING = 0x90)

Bridge operations enable cross-chain transfers and interactions (only call forwarder)

Key Features:

• Cross-chain transfers
• Bridge protocol integration
• Across/Stargate integration

Encoding Structure

All operations follow a consistent encoding pattern:

[command: uint8][operation-specific data: bytes]

Command Byte Values

ComposerCommands Enum