Vis is a coding agent that combines tools into Python programs. It can chain operations, run them in parallel, and inspect results before deciding what belongs in the conversation.
The runtime substrate for agentic systems — one Go binary, six LLM providers, MCP-native, configurable as a managed sandbox or full agentic dev environment. Where agents live, talk, and learn.
Run AI-generated JavaScript from Python, securely, in a sandbox: real V8 in a supervised, OS-sandboxed worker process (Seatbelt, Landlock, seccomp), with your Python functions as the only way out.
Open-source governed-sandbox control plane for any workload — per-run identity, brokered credentials, layered egress, approvals, and an append-only audit. Coding agents are the flagship use. Apache-2.0, self-hosted.
Kavun is a lightweight, high performance, embeddable scripting language for Go, featuring first-class records, lambda-based pipelines, f-strings, and a sandboxable VM.