---
license: apache-2.0
language:
- en
tags:
- lfm2.5
- kali-linux
- terminal-executor
- tool-calling
- function-calling
- executor
- cybersecurity
- penetration-testing
base_model: LiquidAI/LFM2.5-350M-Base
datasets:
- iselabvn/Kali-terminal-executor-v2
library_name: transformers
pipeline_tag: text-generation
model-index:
- name: Kali-Terminus-v2
  results:
  - task:
      type: text-generation
      name: Shell Command Generation
    dataset:
      name: Kali-Terminus Evaluation Suite
      type: custom
    metrics:
    - type: strict_pass_rate
      value: 92.31
      name: Strict Pass Rate
    - type: tool_call_parse_rate
      value: 100
      name: Tool Call Parse Rate
    - type: semantic_command_accuracy
      value: 92.31
      name: Semantic Command Accuracy
new_version: iselabvn/Kali-Terminus-v3
---

# Kali-Terminus-v2

**Kali-Terminus-v2** is a fine-tuned [LFM2.5-350M](https://huggingface.co/LiquidAI/LFM2.5-350M-Base) model specialized for Kali Linux terminal command execution. It converts natural language instructions into precise shell commands with native LFM2.5 `<|tool_call_start|>`/`<|tool_call_end|>` JSON tool calls.

This is the **Executor Agent** in a multi-agent penetration-testing system — it translates one bounded instruction into one structured terminal action.

## Model Details

| Property | Value |
|---|---|
| **Base Model** | [LFM2.5-350M](https://huggingface.co/LiquidAI/LFM2.5-350M-Base) |
| **Architecture** | LFM2 hybrid (10 conv + 6 full-attention layers) |
| **Parameters** | 350M |
| **Context Length** | 128K tokens (trained with 1024) |
| **Fine-Tuning** | LoRA (r=16, alpha=32, 11 target modules) |
| **Training Data** | iselabvn/Kali-terminal-executor-v2 (2,418 samples) |
| **Precision** | float32 (merged) |
| **Format** | `<\|im_start\|>` / `<\|im_end\|>` with native `<\|tool_call_start\|>`/`<\|tool_call_end\|>` JSON tool calls |

## Performance

Evaluated across 5 scenarios (26 turns) covering network recon, system enumeration, web recon, DNS recon, and self-correction:

| Metric | Score |
|---|---|
| **Strict Pass Rate** | **92.31%** |
| Tool Call Parse Rate | 100.0% |
| Exactly One Tool Call | 100.0% |
| Semantic Command Accuracy | 92.31% |

### Comparison with V1

| Model | Strict Pass Rate | Improvement |
|---|---|---|
| Kali-Terminus-v1 (FunctionGemma-270M) | 65.8% | — |
| Kali-Terminus-v1 (LFM2.5-350M) | 50.0% | — |
| **Kali-Terminus-v2** | **92.31%** | **+42.3 pp over v1 LFM2.5** |

## Dataset

Fine-tuned on [iselabvn/Kali-terminal-executor-v2](https://huggingface.co/datasets/iselabvn/Kali-terminal-executor-v2), a curated collection of 2,418 shell command execution pairs combining 1,380 source records with 1,000 synthetically augmented records (DeepSeek-V4-Flash).

Top tools in training data:
`nmap` · `dig` · `gobuster` · `curl` · `whatweb` · `sqlmap` · `find` · `hydra` · `uname` · `ss` · `subfinder` · `dnsrecon` · `ffuf` · `id` · `nikto`

## Usage

```python
from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained("iselabvn/Kali-Terminus-v2", trust_remote_code=True)
tokenizer = AutoTokenizer.from_pretrained("iselabvn/Kali-Terminus-v2", trust_remote_code=True)

messages = [
    {"role": "user", "content": "Scan port 80 on 192.168.1.1"}
]
inputs = tokenizer.apply_chat_template(
    messages,
    tools=[{
        "type": "function",
        "function": {
            "name": "exec",
            "description": "Execute a shell command in the Kali terminal.",
            "parameters": {
                "type": "object",
                "properties": {"command": {"type": "string"}},
                "required": ["command"]
            }
        }
    }],
    add_generation_prompt=True,
    return_tensors="pt"
)
outputs = model.generate(**inputs, max_new_tokens=256)
response = tokenizer.decode(outputs[0][inputs["input_ids"].shape[-1]:], skip_special_tokens=False)
print(response)
# Expected: <|tool_call_start|>{"name": "exec", "arguments": {"command": "nmap -p 80 192.168.1.1"}}<|tool_call_end|>
```

## Tool Call Format

Kali-Terminus-v2 produces native **LFM2.5 tool calls** wrapped in `<|tool_call_start|>` and `<|tool_call_end|>` tokens, output as JSON:

```
<|tool_call_start|>{"name": "exec", "arguments": {"command": "nmap -p 80 192.168.1.1"}}<|tool_call_end|>
```

A system instruction `Output function calls as JSON.` is prepended so the model emits JSON rather than the default Pythonic calls.

## Tool Call Format

Kali-Terminus-v2 produces native **LFM2.5 tool calls** wrapped in `<|tool_call_start|>` and `<|tool_call_end|>` tokens, output as JSON:

```
<|tool_call_start|>{"name": "exec", "arguments": {"command": "nmap -p 80 192.168.1.1"}}<|tool_call_end|>
```

A system instruction `Output function calls as JSON.` is prepended so the model emits JSON rather than the default Pythonic calls.

## Intended Use

- **Executor Agent** in multi-agent penetration-testing systems
- **Single-Turn Kali Terminal Assistant** — converts natural language to shell commands
- **Not recommended** for general conversation or chatbot use

## Limitations

- Designed for single-turn command generation; multi-turn interaction requires external state management
- Commands target authorized lab environments only; not for production systems without human review
- Best performance on the 15 core Kali/Linux tools seen during training

## Training Details

| Hyperparameter | Value |
|---|---|
| LoRA rank | 16 |
| LoRA alpha | 32 |
| LoRA dropout | 0.05 |
| Target modules | in_proj, out_proj, q_proj, k_proj, v_proj, w1, w2, w3, gate_proj, up_proj, down_proj |
| Learning rate | 2e-4 (cosine) |
| Batch size | 4 |
| Gradient accumulation | 4 |
| Effective batch size | 16 |
| Epochs | 3 (best checkpoint at step 352, ~2.7 epochs) |
| Max sequence length | 1024 |
| Optimizer | AdamW |
| Precision | bfloat16 |

## Citation

```bibtex
@misc{kali-terminus-v2,
  author = {ISeLab},
  title = {Kali-Terminus-v2: Fine-tuned LFM2.5-350M for Kali Linux Terminal Execution},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/iselabvn/Kali-Terminus-v2}
}
```