Open-source, self-hosted Claude Code - a terminal AI assistant and the Python framework behind it. Tool-calling, sandboxed execution, multi-agent teams, skills, checkpoints, unlimited context - on Pydantic AI, any model.

Claude Code's compaction engine, as a drop-in DeepAgents middleware

Build resilient agents.

Multi-language agent runtime and library for execution scope management, lifecycle events, and middleware on tool and LLM calls.

PyWry is a cross-platform app factory, rendering engine and UI toolkit for Python that produces native desktop, web, and notebook experiences from a single API.