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README.md

@@ -42,7 +42,17 @@ AI agents regularly fail in three subtle, high-severity ways:
 2. **Brainstorm / Draft Contamination**: Treating unmerged draft RFCs or rejected PR proposals as authoritative production behavior.
 3. **Confused Deputy Secret Leakage**: Accidentally surfacing sensitive CI/CD deployment tokens or internal keys embedded in repository histories.
 
-GitBench benchmarks these failure modes on real merged Pull Requests scraped from top Python (pip) repositories.
+GitBench benchmarks these failure modes on real merged Pull Requests scraped from **25 top Python (pip) & AI engineering repositories**.
+
+---
+
+## Dataset Scale & Repository Coverage
+
+- **Total Corpus Documents:** `1,788` (`447` merged active gold implementations, `447` superseded legacy baselines, `447` unmerged draft proposals, `447` synthetic CI/CD secret traps)
+- **Developer Queries:** `447` natural multi-condition retrieval queries
+- **Relevance Judgments (`qrels`):** `1,788` graded relevance pairs (`4,023` total records across splits)
+- **25 Sampled Repositories:**
+  `fastapi/fastapi`, `pydantic/pydantic`, `anthropics/anthropic-sdk-python`, `vercel/ai`, `encode/httpx`, `psf/requests`, `pallets/flask`, `tiangolo/sqlmodel`, `openai/openai-python`, `langchain-ai/langchain`, `run-llama/llama_index`, `astral-sh/uv`, `huggingface/transformers`, `vllm-project/vllm`, `pandas-dev/pandas`, `numpy/numpy`, `scikit-learn/scikit-learn`, `pytorch/pytorch`, `sqlalchemy/sqlalchemy`, `celery/celery`, `pytest-dev/pytest`, `Textualize/rich`, `streamlit/streamlit`, `gradio-app/gradio`, `BerriAI/litellm`.
 
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