Build a PrizePicks Discord bot.

What you need

• A free PrizePicks API key in PRIZEPICKS_API_KEY.
• A Discord webhook URL in DISCORD_WEBHOOK_URL. Create it under Channel settings, Integrations, Webhooks.
• Python 3.9 or newer. The worker uses only the standard library.

The worker

Run this from cron or a loop. It keeps its place in a small file, so a restart resumes where it stopped and sends nothing twice. It advances the cursor only after Discord accepts the message.

import json, os, pathlib, time
from urllib.parse import urlencode
from urllib.request import Request, urlopen

KEY = os.environ["PRIZEPICKS_API_KEY"]
HOOK = os.environ["DISCORD_WEBHOOK_URL"]
LEAGUE, THRESHOLD = "NFL", 2.0
STATE = pathlib.Path("cursor.txt")

def changes(cursor):
    params = {"league": LEAGUE, "limit": 200}
    if cursor:
        params["after"] = cursor
    req = Request("https://prizepicksapi.com/api/v1/changes?" + urlencode(params),
                  headers={"Authorization": "Bearer " + KEY})
    with urlopen(req, timeout=20) as res:
        return json.load(res)

def post(text):
    body = json.dumps({"content": text[:2000]}).encode()
    req = Request(HOOK, data=body, headers={"Content-Type": "application/json", "User-Agent": "prop-alerts"})
    urlopen(req, timeout=20).close()

def is_move(e):
    prev = e.get("previous_line")
    return e["type"] == "offer.changed" and prev is not None and abs(e["line"] - prev) >= THRESHOLD

def run_once():
    cursor = STATE.read_text().strip() if STATE.exists() else None
    page = changes(cursor)
    moves = [e for e in page["data"] if is_move(e)]
    if moves:
        post("
".join(f"{e['player_name']} {e['stat']}: {e['previous_line']} to {e['line']}" for e in moves[:20]))
    if page["data"]:
        STATE.write_text(page["data"][-1]["cursor"])

while True:
    run_once()
    time.sleep(60)

A first run starts from the oldest available event. To start from now, store the newest cursor first and post nothing on that run. At one request a minute the worker uses about 1,440 requests a day, so the Free plan suits a test and the Developer plan suits a running bot. Lower the rate if you only need alerts on game days.

Keep the channel readable

Handle errors without losing events

Do not advance the cursor when the post fails. On HTTP 429, Discord returns retry_after in seconds, so wait that long and retry. On a 429 from this API, read the Retry-After header. Because the cursor only moves after a successful post, a crash replays the last batch instead of dropping it.

Add more than the move

Each event carries a projection_id. GET /api/v1/projections/{id}/history returns the whole path of that line, so a message can say how many times it has moved and where it opened. For NBA players, GET /api/v1/hit-rates adds how often the over has hit recently.

curl "https://prizepicksapi.com/api/v1/projections/$PROJECTION_ID/history" \
  -H "X-User-Request: Read PrizePicks data for an integration check" -H "Authorization: Bearer $PRIZEPICKS_API_KEY"