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I Gave a Talk at DevelopersIO 2026 TOKYO: How to Build a Claude Code Execution Environment You Can Truly Leave Unattended #devio2026 | DevelopersIO

SoftwareFirst seen October 25, 2026152 points

A Japanese engineer, Akaike, gave a talk at the DevelopersIO 2026 Tokyo event. The talk was about setting up a way to let Claude Code (an AI coding tool) run safely and automatically without someone watching it.

What happened

On October 24, 2026, Akaike spoke at DevelopersIO 2026 Tokyo under the title "How to Build a Claude Code Environment You Can Truly Leave Alone." He shared his slides afterward. He says that after a new "auto mode" was added, he no longer had to keep clicking "approve" for every step. But then he ended up with a new problem: a big pile of work to review.

The main idea

Claude Code is an AI tool that can write and change code on its own. Normally, a person must approve many of its actions. The talk focused on tips for making it safe and efficient to let it work on its own. It also covered a key point: in the end, the human who reviews the work is still the bottleneck.

Why it matters

As AI tools do more work by themselves, the limit is no longer the AI's speed. It is how much a person can check. The talk suggests that good setup is not only about speed, but also about making the human review step manageable.

What to try

You do not have to use every tip. Pick one idea from the talk that looks useful.
Use it to let Claude Code run unattended for a little longer each time.
Watch how much review work comes back, since that is the new bottleneck.
Check the slides the author shared for the full list of setup tips.

Glossary

Claude Code: An AI tool that can write and change computer code on its own, based on instructions.
auto mode: A setting in Claude Code that lets it take more actions without asking the user to approve each one.
DevelopersIO: A tech community and event series in Japan where engineers share knowledge about cloud and software tools.
bottleneck: The step that slows down a whole process, like a narrow part of a bottle that limits how fast liquid flows out.