GitHook is an open, on-chain skill and AI workflow marketplace built for people who work with crypto, code, data, and research. The platform allows users to discover, install, and use practical skills that can help with different tasks such as coding, on-chain analysis, wallet research, token investigation, trading workflows, documentation, automation, and market research. GitHook is not limited to developers only; it is designed for builders, on-chain traders, researchers, analysts, founders, and communities who want reusable AI-powered workflows in one place. The project is built around the Ethereum and Base ecosystem, using blockchain rails to support ownership, creator rewards, and transparent participation.