143.dev – we open-sourced our internal coding-agent infrastructure

Show HN: 143.dev – we open-sourced our internal coding-agent infrastructure

143.dev – we open-sourced our internal coding-agent infrastructure operates in show hn launch.

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We just open-sourced the internal system we built at Assembled for running coding agents as a team.Coding agents worked well for individual engineers, but the surrounding workflow was a bit of a mess. We generally found that many engineers had different MCP connections and context for their agents, personal automations running that other people couldn’t access, and very little introspection for what a human’s input into the coding agent looked like.So we built an internal system that converted coding agents into shared team infrastructure.The system runs Codex, Claude Code, OpenCode, and other agent harnesses in gVisor sandboxes. You can mix and match coding agents to tune your cost and inte

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