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license: apache-2.0
base_model: Qwen/Qwen2.5-Coder-1.5B-Instruct
tags:
- qwen2
- coder
- code
- agent
- transformers
- text-generation
pipeline_tag: text-generation
library_name: transformers
---
<div align="center">
# 🧠 Nexus Coder
### AI Code & Security Engine — Qwen2.5-Coder based
**A deployable coding model: Qwen2.5-Coder-1.5B weights + Nexus Coder agent engine (skills & tools)**
</div>
## 📖 Introduction
**Nexus Coder** is a working AI model combining:
- **Model weights:** [Qwen2.5-Coder-1.5B-Instruct](https://huggingface.co/Qwen/Qwen2.5-Coder-1.5B-Instruct) (Apache 2.0) — a strong 1.5B coding model.
- **Agent engine:** the Nexus Coder framework (`nexus/`) — 60+ skills and 80+ tools with automatic registration, agent planner/router/memory/safety, data pipeline, and training utilities.
## 🚀 Quick Usage
The model is a standard `Qwen2ForCausalLM`. Load it with `transformers`:
```python
from transformers import AutoModelForCausalLM, AutoTokenizer
model_id = "AdminReal/NexusCoder"
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(model_id)
messages = [{"role": "system", "content": "You are Nexus Coder, a helpful coding assistant."},
{"role": "user", "content": "Write a Python function to compute fibonacci."}]
text = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = tokenizer([text], return_tensors="pt")
out = model.generate(**inputs, max_new_tokens=512)
print(tokenizer.decode(out[0][inputs["input_ids"].shape[1]:], skip_special_tokens=True))
```
CLI chat demo (from source):
```bash
python scripts/chat.py --model AdminReal/NexusCoder
```
## 📁 Repository Contents
| Part | What it is | License |
|------|-----------|---------|
| `model.safetensors`, `config.json`, `tokenizer.*` | Qwen2.5-Coder-1.5B-Instruct weights | Apache 2.0 |
| `nexus/` | Agent engine source (skills, tools, agent, data, optim) | NAL-1.0 |
| `configs/` | Experimental architecture designs (`tiny` → `423b`) — **not** the hosted model | NAL-1.0 |
| `docs/`, `scripts/`, `tests/` | Documentation, CLI scripts, tests | NAL-1.0 |
> The `configs/nexus_coder_*.yaml` files describe a from-scratch MoE research architecture and are **independent** from the Qwen2-based weights hosted in this repo.
## ⚖️ Licenses
- **Model weights:** Apache 2.0 (from Qwen/Qwen2.5-Coder-1.5B-Instruct). See `LICENSE`.
- **Source code (nexus engine):** NexusCoder Attribution License v1.0 (NAL-1.0). Attribution required to Hieu Louis (github.com/mhieuhonda).
## 👤 Author
Hieu Louis · 2026
- GitHub: @mhieuhonda
- Project: NexusCoder
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