This is a reproducible SFT export built from real agentic coding sessions
(Claude Code and Codex transcripts) plus a small tranche of explicitly labeled
reconstructions grounded in saved cosmology run artifacts. It targets
repository-grounded cosmology coding, scientific data work, and multi-step tool
use. The recommended training view is train_turns.jsonl.
The canonical export has 411 trajectories (367 train, 44 validation) and 3,976
turn-level… See the full description on the dataset page:
https://huggingface.co/datasets/licongxu/cosmology-agentic-sft.
