0xhamssog/evm-trading-executor

This repository demonstrates a reusable Solidity/EVM execution layer for automated trading applications. It focuses on constrained execution, access control, slippage protection, deadline validation, event-driven state, transaction-state management, and reconciliation. Trading applications often mix strategy, risk, and execution in one place. That makes the onchain boundary hard to audit. This project isolates the execution layer: a caller submits a trade that has already been chosen, and the contract enforces who may trade, which routers and tokens are allowed, and which output and deadline bounds must hold. An execution contract that can call any address with arbitrary calldata is the wrong tool under a trading bot. This executor exposes one trade function. It pulls a known token, approves one allowlisted router for that call, checks what the recipient actually received, emits a structured event, and clears the allowance before returning. The TypeScript side treats that event as the canonical fill. A quote…