probnode-sdk

Python client and command line for ProbNode: Polymarket order books, trades and feed gaps as hourly and market-day files (lp2, parquet, csv.gz), with a sha256 for every file.

pip install ./packages/probnode        # from a checkout; on PyPI as probnode-sdk soon
                                       # (not `pip install probnode`: that is someone else's package)
probnode login
probnode datasets
probnode files books parquet 2026-11-08T12 2026-11-08T14
probnode sync books parquet 2026-11-08T12 2026-11-08T14 -o data/   # again later: only changes
probnode doctor data/                                              # re-check every sha256

import probnode

pn = probnode.Client()  # PROBNODE_API_KEY, or the key `probnode login` saved
files = pn.files("books", "parquet", "2026-11-08T12:00:00Z", "2026-11-08T13:00:00Z")
paths = list(pn.download_all(files, "data/"))  # each checked against its sha256
table = probnode.read(paths[0])  # pyarrow.Table -> .to_pandas() / polars.from_arrow()

for batch in probnode.iter_lp2("hour.lp2"):  # native books, decoded in bounded memory
    ...

Units: prices x10,000 (5400 = 0.54), sizes x1,000,000 shares, timestamps in ms UTC. Signed links last 15 minutes; the client signs again whenever it needs to. The import name is probnode; the PyPI name is probnode-sdk because probnode is taken.