Tweet by FredKSchott

April 15, 2026

OpenAI is using the term "Sandbox Agent" now. Wild. When I created Flue I'd envisioned this idea of sandbox agents as just a CI-only niche, but clearly this is now where the entire industry is headed. Any agent can be generalized to: - A file system: to define context, skills, etc. - An agent: to capture instructions, role, etc. - A harness: to run the agent - A sandbox: to provide the runtime. Note that this can run in a full container or a faster/cheaper isolate (microVM, in-memory FS, Cloudflare DO, just-bash, etc) depending on the problem you get it. In the future every agent will be represented this way. It no longer makes sense to learn a bespoke agent framework in python or JS when every dev already knows how to set up Claude Code, Codex, OpenCode. Should Flue become a new agent framework that lets you build any agent, the same way to setup Claude Code? https://t.co/SI2lWF51Me

Author
FredKSchott
Date
April 15, 2026
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