Caesars Sportsbook odds API · affiliate 35

Caesars odds API.
Game lines and props, one request.

Get Caesars Sportsbook prices through TheRundown, beside DraftKings, FanDuel, and the rest of the 25+ books. Filter one source or compare books without changing your response parser.

Free key · 20,000 data points a day · No credit card · Every book and live odds from $49/mo

GET/api/v2/sports/{sport_id}/events/{date}

RequestPython 3 · requests

import os
from datetime import datetime, timezone
import requests

key = os.environ["THERUNDOWN_API_KEY"]
api = "https://therundown.io/api/v2"
headers = {"X-TheRundown-Key": key}

# Next game date across the NFL (2), NBA (4), and NHL (6)
dates = requests.get(
    f"{api}/sports/dates",
    params={
        "sport_ids": "2,4,6",
        "format": "epoch",
        "exclude_canceled": "true",
    },
    headers=headers,
    timeout=30,
).json()

now = datetime.now(timezone.utc).timestamp()
upcoming = [
    (sport_id, stamp)
    for sport_id, body in dates.items()
    for stamp in body.get("dates") or []
    if stamp > now
]
sport_id, stamp = min(upcoming, key=lambda row: row[1], default=("2", now))
date = datetime.fromtimestamp(stamp, timezone.utc).date().isoformat()

# Caesars next to DraftKings and FanDuel: moneyline, spread, and total
odds = requests.get(
    f"{api}/sports/{sport_id}/events/{date}",
    params={"market_ids": "1,2,3", "affiliate_ids": "35,19,23", "main_line": "true"},
    headers=headers,
    timeout=30,
)
print(odds.text)

Response200 · trimmed

{
  "events": [{
    "event_id": "061bb212f95220c351f78a7731e29dcd",
    "sport_id": 2,
    "event_date": "2026-11-01T18:00:00Z",
    "markets": [{
      "market_id": 1,
      "name": "moneyline",
      "participants": [{
        "id": 61,
        "type": "TYPE_TEAM",
        "name": "Buffalo Bills",
        "lines": [{
          "prices": {
            "35": {
              "price": -173,
              "is_main_line": true,
              "updated_at": "2026-10-29T13:26:55Z"
            }
          }
        }]
      }]
    }]
  }]
}

Baltimore Ravens at Buffalo Bills, November 1, 2026. Captured October 29 and trimmed to the Buffalo moneyline from Caesars (35). Prices are an example, not a live quote.

Starter keyCaesars requires Starter or above. A Free key returns the eligible DraftKings and FanDuel game lines from this request, without Caesars.

Markets

The Caesars markets we verified.

Main lines and alternate rungs in the NFL, NBA, and NHL; player props, halves, and team totals in the NFL and NBA. Availability varies by sport, game, and market.

35
Caesars affiliate ID
3
Leagues sampled Oct 29
REST
From Starter
WebSocket
Real-time on Ultra
Market typePlan
  • Game linesNFL, NBA, and NHL moneylines, spreads, and totals
    1 · 2 · 3Starter
  • Alternate linesAdditional spread and total rungs in the NFL, NBA, and NHL; NFL and NBA player-prop rungs
    omit main_lineStarter
  • HalvesNFL first-half moneyline, spread, and total; NBA first-half spread and total
    4 · 5 · 6Starter
  • Player propsNFL passing, rushing, receiving yards, and receptions; NBA points, rebounds, and assists
    51 · 53 · 57 · 58 · 29 · 35 · 39Starter
  • Team totalsNFL and NBA team totals
    94Starter
  • In-gameNBA and NHL moneylines, spreads, and totals while Caesars trades them
    41 · 42 · 43Starter

Verified October 29, 2026 using Caesars prices on the November 1 NFL slate, October 30 NBA and NHL slates, and October 29 NBA and NHL in-game markets. This is a sampled market list, not a guarantee that every game has every market.

Books

25+ books. One schema.

Compare Caesars with other sources in the same event and market structure. Pass affiliate_ids=35 for Caesars alone, or 35,19,23 for Caesars, DraftKings, and FanDuel.

Books in the API25

Sportsbooks · 20

  • DraftKingsFree19
  • FanDuelFree23
  • BetMGMFree22
  • Caesars Sportsbook35
  • Pinnacle3
  • Circa Sports32
  • BookMaker7
  • BetCRIS9
  • Bovada2
  • theScore Bet24
  • Unibet21
  • HardRock28
  • Bet10533
  • Heritage Sports34
  • BetOnline6
  • SportsBetting4
  • LowVig11
  • Intertops14
  • Matchbook16
  • YouWager18

Prediction markets · 3

  • Kalshi25
  • Polymarket26
  • Polymarket US31

Exchanges · 2

  • ProphetX29
  • Novig30

Live from GET /api/v2/affiliates. The affiliates endpoint lists the current sources. Each book posts its own prices and market selection. Coverage varies by league, game, and market.

Free vs paid

Test the schema free. Add Caesars on Starter.

Choose TheRundown for odds and scores joined under one event ID, with participant and signed-line identities and explicit price closure signals. Request the books and markets your application uses, then measure X-Datapoints. Paid subscriptions have a fixed fee and included volume; unrequested price rows conserve that volume without reducing the base fee. Read the sports odds API guide · Explore joined sports data · Metering rules

Free · $0

Free covers DraftKings, FanDuel, and BetMGM pre-match game lines, five minutes delayed. Caesars is not included.

Paid · from $49/mo

Caesars starts on Starter ($49 a month) with a 60-second delay for internal or personal use. Pro ($149 a month) adds commercial end-user display and a 30-second delay. Ultra ($399 a month) adds real-time REST and WebSocket streaming.

Free$0/mo5-minute delay · 20,000/day · 200,000/monthPre-match game lines from DraftKings, FanDuel, and BetMGM.
Starter$49/mo60-second delay · 25,000,000/moEligible sources, alternates, periods, props, and 60-second-delayed in-play odds. Internal or personal use.
Pro$149/mo30-second delay · 125,000,000/mo30-second-delayed odds and commercial end-user display.
Ultra$399/moReal-time · 500,000,000/moReal-time REST, WebSocket streaming, and futures.

Compare every plan →

Questions

Before you build.

Plans, markets, books, and IDs for the Caesars odds API.

Does Caesars Sportsbook have an odds API?
TheRundown provides Caesars Sportsbook odds through its sports data API, using affiliate ID 35. This page describes TheRundown's API, not an official Caesars developer program.
How do I get Caesars odds with an API key?
Create a TheRundown account, choose Starter or above, and send your API key in the X-TheRundown-Key header. Set affiliate_ids=35 on an events request. The example above finds an upcoming slate and requests Caesars beside DraftKings and FanDuel.
Is Caesars included on the free API plan?
No. Free keys cover DraftKings, FanDuel, and BetMGM pre-match game lines with a five-minute delay. Caesars requires Starter or above. You can test the response shape on Free before choosing a paid plan.
Which Caesars markets can I request?
We verified NFL, NBA, and NHL moneylines, spreads, totals, and alternate lines; NFL and NBA player props, first-half lines, and team totals; and NBA and NHL in-game lines. Coverage varies by sport, game, and market. The market rows above give the verified market IDs and sampling dates.
Can I stream real-time Caesars odds over WebSocket?
Yes. Ultra includes real-time REST and WebSocket streaming for available Caesars markets. Starter delivers REST prices with a 60-second delay; Pro has a 30-second delay. Stream availability follows the markets the source posts.
How do I get Caesars alternate lines?
Omit main_line=true to request all posted rungs rather than only the main line. Keep the affiliate ID, market ID, participant, and signed line value when comparing prices so different sides and alternate rungs stay distinct.