Answer · Steam · Python

Detect steam moves in Python on the WebSocket

Updated 10 November 2026 · PinnFeed · 1 min read

Answer: keep the last decimal per market id, flag shortens beyond your threshold within a window, and ignore thin maxStake. Builder WS required. Full pattern: steam guide and steam answer.

Sketch#

# after applying a delta upsert:
prev = last.get(m["id"])
last[m["id"]] = m
if prev and maxStake_ok(m):
    for o_old, o_new in zip(prev["outcomes"], m["outcomes"]):
        if o_new["decimal"] < o_old["decimal"] * 0.95:
            alert(m, o_old, o_new)

Not financial advice (18+).

Trial CTA#

Builder (€99/mo) for WebSocket and closing history. 3-day trial; card required, charged after day 3 unless cancelled. Free REST: signup. Related: answers hub, docs.

Questions people ask#

REST alternative?#

Poll /v1/drops on Free/Hobby — slower.

Threshold magic number?#

Choose your own; the 5% figure is an example, not a tip.

Is this educational content for adults?#

Yes (18+).