Developer Mike Gvozdev has published claudish-to-english on GitHub, an MIT-licensed open source plugin for Claude Code. It shows a simplified version of every Claude message, generated locally by a model running through Ollama. The default is Gemma 4 at 26 billion parameters, roughly a 17 GB download. Gvozdev calls the project a working prototype.
The hook fires on the MessageDisplay event and hands the finished message text to the local model. Everything it changes is cosmetic: reasoning, tool calls, and the saved transcript keep the original wording, and if Ollama is unreachable or the request hangs, Claude Code just shows the original text.
The plugin has been submitted for review to Anthropic's community marketplace. Until it clears, you install it straight from the author's repo.