Luthier audits whether AI coding agent configs still match their repos

On October 3, 2026, a DEV Community article introduced Luthier, a tool that audits whether an AI coding agent's configuration files still match the repository they are supposed to manage. The files in question are CLAUDE.md, AGENTS.md, .cursorrules, a folder of skills, and an .mcp.json containing four servers. The article describes a pattern teams keep running into: these files are written in a burst of optimism early in a project, and then the code moves on. Three months later, the file the configuration tells the agent to edit has been renamed, the command it tells the agent to run is no longer a script, and the MCP servers in .mcp.json point at binaries nobody has installed. The article frames this as the agent's own configuration file lying to it, with nothing checking whether any of it is still true. Beyond the file types it examines and those examples of drift, the report does not say when Luthier was released, how the audit is performed, which agents or repository types it supports, or whether it is publicly available.