What problem does it solve? Large scientific datasets cannot live in plain Git, and analyses often lack a machine-readable record of how outputs were produced. This Skill manages dataset retrieval, versioning, publication, and computational provenance using DataLad and git-annex. ## Core Features & Use Cases - On-demand data retrieval: Clone datasets from OpenNeuro, DANDI, or datasets.datalad.org in seconds and fetch file content selectively with datalad get, since clones contain pointers rather than data. - Computational provenance: Record commands, inputs, and outputs with datalad run, re-execute them with datalad rerun, and capture software environments with datalad containers-run. - Two-target publishing: Publish Git history to hosting siblings and annexed content to storage remotes such as S3, with --publish-depends preventing broken publications. - Use Case: Clone a BIDS dataset from OpenNeuro, fetch only the subjects you need, run an FSL brain extraction inside a registered container, and publish the derivatives with a complete re-executable provenance record. ## Quick Start Use the datalad skill to clone the OpenNeuro dataset ds000001, fetch the anatomical files for sub-01, and record a brain-mask extraction as a provenance-tracked run.