Ethereum could potentially enable automatic discovery of a modular marketplace for inter-contract interactions in the future. Smart contracts might leverage standardized protocols or registries to dynamically locate and integrate modular components, such as oracles, libraries, or DeFi primitives, without hardcoded dependencies. Layer-2 solutions or sharding could enhance scalability, supporting a marketplace where contracts advertise and discover services via on-chain metadata or off-chain indexing. However, challenges like security, trust in module authenticity, and gas efficiency remain. Advances in EVM, account abstraction, or decentralized identity could address these, fostering a robust ecosystem for modular contract interactions.