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LogBear

Your coding agent can’t see your dev server crash

Open Source
Developer Tools
Artificial Intelligence
GitHub
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Hunted bySukiSuki

AI coding agents can't see your dev server. They edit code, your server throws in another terminal, and the agent says "done, fixed it." Put logbear in front of your command (logbear npm run dev). Your terminal behaves exactly as before. LogBear records every run locally, and when your agent tries to finish with unread errors, it's stopped and handed the real error. Free, MIT, no account, no network calls. macOS.

Top comment

Hey Product Hunt 👋

I built LogBear after one too many times an agent told me "done, everything works" while my dev server was printing a stack trace in the next terminal. The agent wasn't lying. It just couldn't see that terminal.

So LogBear sits in front of your dev command:

`logbear npm run dev`

Your terminal doesn't change: colours, Ctrl-C, breakpoints, resize all behave the same. Behind it, every run is recorded on your machine with the commit you were on. When your agent tries to finish and there are errors it hasn't read, the hook stops it and hands it the actual error. If nothing broke, it says nothing.

A few things I cared about:

• It makes no network calls. No account, no telemetry. History is SQLite files in ~/.logbear.

• It can't break your command. Output hits your screen first; kill LogBear mid-run and your app keeps going.

• psql, ssh and vim are never captured.

• `logbear diff` compares the latest run with the last one that worked: new errors, commits in between, moved lockfiles.

Works with Claude Code, Codex, pi and Hermes (blocking hook + MCP), and Cursor, Zed or anything else that speaks MCP (tools only). macOS today. Linux should build, but I haven't verified it yet.

It's free and MIT. I'd love to hear where it gets in your way, and which agent or framework you'd like it to handle better.

Comment highlights

This hits a pain I run into constantly — the agent says everything works while the dev server died in another terminal. logbear diff is the part I like most, comparing the latest run against the last one that worked instead of just dumping logs on the agent. The local-only setup with no account or telemetry is a big plus for me too.

About LogBear on Product Hunt

“Your coding agent can’t see your dev server crash”

LogBear was submitted on Product Hunt and earned 4 upvotes and 3 comments, placing #35 on the daily leaderboard. AI coding agents can't see your dev server. They edit code, your server throws in another terminal, and the agent says "done, fixed it." Put logbear in front of your command (logbear npm run dev). Your terminal behaves exactly as before. LogBear records every run locally, and when your agent tries to finish with unread errors, it's stopped and handed the real error. Free, MIT, no account, no network calls. macOS.

LogBear was featured in Open Source (69.1k followers), Developer Tools (522.9k followers), Artificial Intelligence (483.5k followers) and GitHub (41.5k followers) on Product Hunt. Together, these topics include over 282.6k products, making this a competitive space to launch in.

Who hunted LogBear?

LogBear was hunted by Suki. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.

Want to see how LogBear stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.