Show HN: Stream live open data in two commands

This describes a command-line tool that streams live open data into local folders in real time. After a brief install step, you run hypermass subscribe <stream-id> to add a stream and hypermass sync to start a continuous process that fetches each published payload as a file (one file per payload) into a subscriptions folder. An example shows subscribing to a solar-image stream (_254gGE43g) where new images appear as they are published. Files are named with payload IDs so alphabetical sorting preserves publication order; sync also sets file modification times to publication timestamps, though a folder-with-metadata option is recommended for reliable timestamps. A hidden .hypermass folder in each stream directory records the stream identity and the last payload received, so users should delete only data files and keep .hypermass to preserve their place.

The tool is aimed at data scientists, developers and researchers who need automated, repeatable access to live streams and easy integration into programs or servers. Sync both subscribes and publishes, meaning it can also upload files written into configured publication-sources. Useful companion commands include status (monitor queues), replay (fetch history from any point), reload (change streams on the fly), and guidance for running sync as a persistent service. The design emphasizes simple cross-platform automation and straightforward integration with existing workflows.