How to use from the
Use from the
Transformers library
# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("text-generation", model="dongguanting/ToolSpace-8B")
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)
# pip install -U transformers accelerate
# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("dongguanting/ToolSpace-8B")
model = AutoModelForCausalLM.from_pretrained("dongguanting/ToolSpace-8B", device_map="auto")
messages = [
    {"role": "user", "content": "Who are you?"},
]
inputs = tokenizer.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=256)
print(tokenizer.decode(outputs[0][inputs["input_ids"].shape[-1]:]))
Quick Links

ToolSpace-8B

Code · Evaluation · 8B · 35B-A3B · 744B-A40B

ToolSpace-8B is a Qwen3-8B agent model trained with ToolSpace trajectories and on-policy agent reinforcement learning for long-horizon tool use.

ToolSpace constructs a tool-composition graph from real execution traces, capturing data, state, and retry dependencies. It synthesizes cross-environment tasks through state-aware walks with rollback and keeps trajectories that pass execution-based verification.

Paper: ToolSpace: Scaling Tool-Centric Environment Synthesis for Long-Horizon Agents.

https://huggingface.co/papers/2611.05036

Model information

Item Details
Backbone Qwen3-8B
Architecture Dense, 8B parameters
Context length 65,536 tokens
Weight format BF16 Safetensors
Training Supervised fine-tuning + agent RL

Results

Results from Table 1 of the ToolSpace paper. Avg. is the unweighted mean over the seven benchmarks.

Model AutomationBench SkillsBench JobBench τ³-Bench Banking BFCL V4 Harvey LAB OfficeQA Pro Avg.
Qwen3-8B 0.0 0.1 0.1 4.1 42.8 0.0 3.0 7.2
ToolSpace-8B (SFT) 32.3 3.9 13.1 10.3 65.3 0.0 12.0 19.6
ToolSpace-8B + Agent RL (this checkpoint) 34.3 4.1 15.5 11.3 67.5 0.0 12.0 20.7

Usage

Serve with vLLM and the included chat template:

vllm serve dongguanting/ToolSpace-8B \
  --served-model-name ToolSpace-8B \
  --max-model-len 65536 \
  --enable-auto-tool-choice \
  --tool-call-parser hermes \
  --reasoning-parser deepseek_r1

The server exposes an OpenAI-compatible endpoint at http://localhost:8000/v1.

Evaluation commands and benchmark configurations are available in the ToolSpace evaluation directory.

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