# How Sebastian Raschka actually uses coding agents

Build an LLM From Scratch author

**If you take one thing:** `Audit the agent first`, before installing any harness. before trying a new coding agent he clones its repo and has a trusted agent audit it for egress and blast radius.

- **Agent:** Codex ([source, 2026-06-27](https://magazine.sebastianraschka.com/p/using-local-coding-agents))
- **Agent:** Claude Code ([source, 2026-06-27](https://magazine.sebastianraschka.com/p/using-local-coding-agents))
- **Agent:** Qwen Code (cli) ([source, 2026-06-27](https://magazine.sebastianraschka.com/p/using-local-coding-agents))
- **Model:** GPT-5.5 ([source, 2026-06-27](https://magazine.sebastianraschka.com/p/using-local-coding-agents))
- **Model:** Qwen3.6-35B-A3B ([source, 2026-06-27](https://magazine.sebastianraschka.com/p/using-local-coding-agents))
- **Review:** Wants to see what the agent is doing; writes the code he cares about himself ([source, 2026-01-31](https://lexfridman.com/ai-sota-2026-transcript))
- **Harness:** Agents run on a separate DGX Spark; local models served by Ollama, tunnelled to the Mac over SSH ([source, 2026-06-27](https://magazine.sebastianraschka.com/p/using-local-coding-agents))

## In their words

> I have to admit that I still primarily alternate between Codex and Claude Code as my daily drivers, for now (and just to keep up with the new tooling and functions that are constantly being added).

> I have to admit that I still primarily alternate between Codex and Claude Code as my daily drivers, for now (and just to keep up with the new tooling and functions that are constantly being added).

> However, I’ve been using local solutions for a while, too, to test things and because it somehow gives me joy to have and use a fully local setup (versus proprietary services).

> Ask a trusted agent you used before (like GPT 5.5 in Codex or Opus 4.8 in Claude Code) to review it with a focused prompt.

> If we accept the reported findings and risks (personally, I didn’t see any red flags), we can now proceed with the installation and hook up our local Qwen3.6-35B-A3B model to Qwen Code (and Codex and Claude Code in the next sections).


Archetype (our label): Purist. Newest source: 2026-06-27.
Card: https://www.prehistoriq.com/stacks/rasbt/ · Data: https://github.com/prehistoriq/stacks/blob/main/data/stacks/rasbt.json