defiqwen25coder

qwen2.5-coder-7b-specforge

Model Description

Fine-tuned Qwen2.5-Coder-7B-Instruct using LoRA adapters on the Spec-Forge training corpus.

The model converts natural-language feature requests into validated YAML specifications that conform to the COMMAND_RUNWAY methodology. Each spec contains:

• task_id, summary, depends_on, local_goals, global_goals_refs, context
• Every local_goal has an Inspect → Create/Modify → Verify verification flow
• Specs pass a hardened validator (canonical vocabulary, near-duplicate detection, YAML safety)
• Specs are scored against runbook-readiness criteria (hard gate: missing Inspect/Create/Verify stages = 0.0)

Training Details

Training Data

• Source: 475 seed prompts across 21 feature categories
• Generation: Ollama (qwen2.5-coder:7b-instruct) at temperature 0.2
• Validation: Hardened YAML spec validator (78 test cases)
• Scoring: Runbook scorer with hard gate (0.75 threshold)
• Format: Chat format (system + user + assistant turns)

Evaluation

See data/eval_results.json after running make eval-model.

Metrics:

• Validation rate: percentage of specs that pass the hardened validator
• Score pass rate: percentage of specs scoring >= 0.75 on the runbook scorer
• Target: >80% score pass rate (held-out prompts)

Usage

Ollama (GGUF)

# Download GGUF from this repo's models/ directory
ollama create specforge -f models/qwen2.5-coder-7b-specforge-gguf/Modelfile
ollama run specforge

HuggingFace Transformers

from transformers import AutoModelForCausalLM, AutoTokenizer
from peft import PeftModel

# Load base model
base = AutoModelForCausalLM.from_pretrained("Qwen/Qwen2.5-Coder-7B-Instruct", torch_dtype="auto")
model = PeftModel.from_pretrained(base, "githeri/qwen2.5-coder-7b-specforge")
tokenizer = AutoTokenizer.from_pretrained("githeri/qwen2.5-coder-7b-specforge")

messages = [
    {"role": "system", "content": "You are a precise specification generator. Output ONLY a YAML document."},
    {"role": "user", "content": "Add a POST /health endpoint that returns 200 OK"},
]
text = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = tokenizer(text, return_tensors="pt").to(model.device)
outputs = model.generate(**inputs, max_new_tokens=512, temperature=0.2)
print(tokenizer.decode(outputs[0], skip_special_tokens=True))

Limitations

• Trained on a synthetic corpus generated by the base model itself — quality is bounded by the base model's spec-generation ability
• Specs are scoped to a single-file, single-feature granularity (not multi-stage epics)
• Context is fixed to TypeScript/Express/Prisma/Vitest stack
• GGUF quantization (q4_k_m) introduces minor quality degradation vs the 16-bit merge

Ethical Considerations

• This model generates structured specifications, not executable code
• All generated specs must pass the hardened validator before use
• Human review is required before feeding specs into a COMMAND_RUNWAY executor

Citation

@misc{githeri-specforge,
  title={Spec-Forge: From Natural Language to Runbook-Ready YAML Specifications},
  author={Githeri},
  year={2026},
  url={https://github.com/nickrotich/githeri}
}

License

Apache 2.0 — same as the base Qwen2.5-Coder-7B-Instruct model.