Bub it. Build it. A tiny agent runtime, composable with plugins.
bubbuild/bub is a small Python runtime for building AI agents that work in shared environments such as conversations with people. It provides a hook-based turn pipeline and runs agents across command-line, Telegram, and other channels, with built-in tools, skills, and model execution; the catalogue entries extend or configure that workflow.
Latest release 0.6.1 · 4 Nov 2026
1 file for Codex and OpenCode: bub AGENTS.md — 1,141 tokens loaded in every session.
AGENTS.md A 1,141 tok These files are bubbuild/bub's own configuration — they tell Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.