[D] We reimplemented Claude Code entirely in Python — open source, works with local models

Reddit r/MachineLearning / 4/2/2026

📰 NewsDeveloper Stack & InfrastructureSignals & Early TrendsTools & Practical Usage

共有:

Key Points

The project “Claw Code Agent” was released as a complete, open-source Python reimplementation of the Claude Code agent architecture, aiming to make it readable and extensible for Python developers.
It provides an agentic coding loop with tool calling, including core file operations (read/write/edit), glob/grep utilities, shell execution, slash commands (e.g., /help, /context, /tools, /memory, /status, /model), and a CLAUDE.md-driven context discovery engine.
The agent supports session persistence (save/resume) and tiered permissions to control capabilities from read-only up through unsafe shell access.
It can run with local or self-hosted models via any OpenAI-compatible backend, with documented support for vLLM as well as common options like Ollama and LiteLLM Proxy.
The maintainers recommend a specific local model (Qwen3-Coder-30B-A3B-Instruct) and invite community issues/PRs to add missing features or fix breakages.

Hey everyone,

We just released Claw Code Agent — a full Python reimplementation of the Claude Code agent architecture, based on the reverse-engineering work shared in this tweet:

https://x.com/Fried_rice/status/2038894956459290963

Why?

The original Claude Code is npm/TypeScript/Rust. If you're a Python developer, good luck reading or extending it. We rebuilt the whole thing in pure Python so anyone can understand it, modify it, and

run it with local open-source models.

What it does:

Full agentic coding loop with tool calling
Core tools: file read/write/edit, glob, grep, shell
Slash commands: /help, /context, /tools, /memory, /status, /model
Context engine with CLAUDE.md discovery
Session persistence — save and resume agent runs
Tiered permissions: read-only → write → shell → unsafe

Works with any OpenAI-compatible backend:

vLLM (documented path)
Ollama
LiteLLM Proxy

Recommended model: Qwen3-Coder-30B-A3B-Instruct — runs fully local, fully free.

Repo: https://github.com/HarnessLab/claw-code-agent

We're actively working on this and happy to add features or take PRs. If something is missing or broken, open an issue — we want to make this useful for the community.

Would love to hear your feedback.

submitted by /u/Practical_Pomelo_636
[link] [comments]