The MCP Chunk Editor is an MCP server tailored for LLM-based file editing, focusing on chunk-oriented operations. It uses Universal CTags to parse files into semantic chunks—such as functions, classes, and methods—allowing LLMs to manipulate meaningful code sections directly. The server offers tools like read_chunks for retrieving chunks, replace_chunks for editing, and undo for reverting recent changes, all with immediate application and preview features. Its design optimizes for token efficiency, making large codebase modifications faster and more accurate. Suitable for automatic code refactoring, debugging, and large-scale editing workflows, it significantly improves LLMs' capability to handle complex file editing tasks in a natural and structured manner.