Create README.md

README.md

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+---
+pretty_name: "Ex Nihilo CODE-001: GitHub Codebase Intelligence Index (Free Sample)"
+license: other
+license_name: babylon-technologies-sample-terms
+language:
+  - en
+size_categories:
+  - n<1K
+tags:
+  - github
+  - code
+  - open-source
+  - repository-metadata
+  - software-engineering
+  - rust
+  - go
+  - cobol
+---
+
+# Ex Nihilo CODE-001: GitHub Codebase Intelligence Index (Free Sample)
+
+A repository-level index of public GitHub projects that carry permissive open-source licenses, published by Babylon Technologies LLC. This page hosts the **free sample**. The full index and the pull-request data are sold separately (see "Full version").
+
+## What is in the full index
+
+- 339 repositories in Rust, Go, Java, C++, COBOL and MATLAB
+- 319 in the verified cut, 205 in the premium cut [add one line saying what "verified" and "premium" mean]
+- Repositories filtered by SPDX license identifier: MIT, Apache-2.0, BSD-2-Clause, BSD-3-Clause
+- Harvest frozen on 2026-09-16, so results are reproducible
+- Estimated lines of code per repository, built from GitHub linguist language bytes divided by a language-specific bytes-per-line calibration (not a fixed multiple of repository size)
+
+## What is in this sample
+
+- 100 rows, sorted by star count. A star-sorted sample is not a random sample, so it over-represents popular projects. Do not use it to estimate statistics about GitHub as a whole.
+- Columns include: repo_id, repo_name, owner, language, stars, forks, contributor count [add the remaining columns from your data dictionary, with one-line definitions]
+- These columns are repository metadata. [Confirm: no source code is included in this sample.]
+- Data dictionary excerpt: [link or file name]
+
+## Full version (paid)
+
+Everything above, plus:
+- Full, verified and premium CSV files
+- Complete documentation and summary statistics
+- A frozen harvest of 1,020 public pull-request file lists and patches
+
+[Purchase link] | [Contact: your email]
+
+## Intended uses
+
+- Benchmarking and sampling for code-related machine learning research
+- Comparing repository activity (stars, forks, contributors) across languages
+- Choosing candidate repositories for further study
+
+## Limitations
+
+- A snapshot taken on 2026-09-16. Repositories change after that date.
+- Lines-of-code figures are estimates, and the method above has known error.
+- Coverage is limited to the six languages and four licenses listed.
+- A permissive license on a repository does not remove obligations such as attribution. Users of any code or patches in the paid version are responsible for complying with each repository's license.
+
+## License of this sample
+
+Published by Babylon Technologies LLC. You may use and cite the sample with attribution to Babylon Technologies. The compilation and its column structure are not dedicated to the public domain and may not be rebuilt or resold. [Adjust this wording to the terms you want.]
+
+## Citation
+
+Babylon Technologies LLC. Ex Nihilo CODE-001: GitHub Codebase Intelligence Index (Free Sample), 2026.
+
+## Changelog
+
+- 2026-09-16: harvest frozen. [Add the date this sample was published.]