LogBear

LogBear shows your coding agent the errors your dev server throws, so it can't say done while your server is down. Key features: • Wraps your command, such as logbear npm run dev, with no change to how your terminal looks or behaves • Records every line, error, and run locally on your machine • Stamps each run with the git commit you were on • Stops coding agents like Claude Code and Codex before they finish with unread errors • Hands the real error to the agent instead of a guess • Works with Cursor and other MCP clients through LogBear tools • Free and open source under the MIT license, with no account and no network calls. Coding agents edit files and move on, but they cannot see what happens in a separate terminal when the server crashes. LogBear runs quietly in front of your command, so colors, Ctrl-C, and everything else behave exactly as before. Each run is saved in a local history, letting you trace a repeated error back to the first run where it appeared and see which commit last worked. When an agent tries to finish while unread errors exist, LogBear intervenes and passes along the actual error message, so fixes are based on evidence rather than assumption. It installs through Homebrew on macOS and runs as a background service. Built for developers who use coding agents to build web apps, APIs, and backend services and want fewer silent failures. Ideal for anyone debugging database errors, broken builds, or crashes during local development on a Mac.