1Code: Managing Multiple AI Coding Agents Without Terminal Hell

1Code: Managing Multiple AI Coding Agents Without Terminal Hell Running multiple AI coding agents in parallel sounds ideal—more brains working on more problems. But in practice, it's a nightmare. Open three terminals running Claude Code instances, and you hit terminal hell : no visibility into what each agent is doing, git diffs scattered everywhere, merge conflicts waiting to happen, and everything stops when you close your laptop. 1Code solves this problem elegantly. Built by 21st.dev (YC W26), it's a free, open-source orchestration layer that manages Claude Code and OpenAI Codex through a single GUI, with Git worktree isolation, cloud-based background execution, and GitHub/Linear/Slack automation triggers. The Problem: Why Terminal Hell Exists The creator of 1Code, Serafim Korablev, described his experience on Hacker News: "After using Claude Code for 4 months, when Opus 4.5 dropped, I could delegate more work to the agent. Running 3-4 agents in parallel, the CLI became painful." Sp