Multi-file editing is the ability of a coding agent to make coordinated changes across multiple files in a repository in a single operation. This capability distinguishes agentic coding tools from simple autocomplete assistants.
A multi-file edit might involve renaming a function and updating every call site, adding a new API endpoint with route handler, controller, model, and tests, or refactoring a module’s architecture across its entire dependency tree.
Tools vary in how they handle multi-file editing. Cursor’s Composer mode lets users direct changes across files. Claude Code plans and executes multi-file changes autonomously from a single task description.