Odds API by market / MLB

MLB Total Runs API

Live totals odds across every book that posts it, in one REST call — and, unlike any other odds API, every one of those outcomes settled against the official result once play ends.

No credit card. 1,000 requests / day on the free tier.

What MLB total runs is

Over/Under on combined runs. Alternate totals and per-team run totals ship in the same response; a team total carries the team name in the market description.

How we settle it. Settled against the combined final score, or one team's runs for a team total.

30
books quoting it on the next event
4/10
of the next MLB events carry it right now
9,042
outcomes settled in the last 4 days

Every number on this page is measured against the live API, never copied from a spec sheet. Last measured 6 October 2026.

Books posting MLB total runs

Measured live, not listed from a spec. Coverage moves — a book that has not put its board up yet will not appear until it does, which is exactly what this list is for.

BetMGMBetOnline.agBetRiversBetUSBovadaCourtsideDraftKingsFanaticsFanDuelFliffHard Rock BetHeritage SportsJazz SportsKalshiLowVig.agMatchbookNovig1xBetPinnaclePolymarketPolymarket USProphetXReBetSmarketsSportzinoSX BetTABThrillzzUnibetYouWager

Line shopping across all of them is one request — every book arrives in the same bookmakers array, not one call per book. Add ?bookmakers= to narrow it, or use /best-line for the best price per line already ranked.

Recently settled MLB total runs outcomes

These are real rows out of the API, not an illustration. Each one was a price on a board before the event and carries the actual figure it was graded against afterwards. No other odds API returns that last column — they stop at the price.

9,042 total runs outcomes settled in the last 4 days across 31 books. The 12 most recent:

BetActualResult
Over 10.57.0lost
Under 10.57.0won
Over 7.57.0lost
Under 7.57.0won
Over 3.57.0won
Over 11.57.0lost
Under 3.57.0lost
Over 4.57.0won
Under 4.57.0lost
Under 11.57.0won
Over 12.57.0lost
Under 12.57.0won

Over/Under split, last 4 days

The Over won 30.4% of 4417 decided total runs lines (1343 over, 3074 under, 107 push). Computed from the settled rows themselves, scoped to MLB only.

Read off 4,524 Over legs out of 9,042 settled outcomes on this market. The rest are Unders and milestone legs (“1+”, “2+”) that some books price here too, and a threshold rung is not an Over.

A few days of one market describes a few days — it is not an edge. Pull the full history through /exports/resolved-props for a sample worth modelling on.

Live response

Captured from the real endpoint on Los Angeles Dodgers @ Atlanta Braves, trimmed to one book and three outcomes so the shape stays readable. The full response carries every book and every line, alternates included, in the same call.

{
  "home_team_key": "braves",
  "away_team_key": "dodgers",
  "home_team_id": "mlb:144",
  "away_team_id": "mlb:119",
  "home_team_logo_url": "https://www.mlbstatic.com/team-logos/144.svg",
  "away_team_logo_url": "https://www.mlbstatic.com/team-logos/119.svg",
  "id": "322322",
  "sport_key": "baseball_mlb",
  "home_team": "Atlanta Braves",
  "away_team": "Los Angeles Dodgers",
  "commence_time": "2026-10-06T22:00:00Z",
  "live": false,
  "is_outright": false,
  "tournament": null,
  "tour": null,
  "last_update": "2026-10-06T16:09:21.362075Z",
  "merged_from_event_ids": null,
  "bookmakers": [
    {
      "key": "betmgm",
      "title": "BetMGM",
      "last_update": "2026-10-06T16:08:43.348327Z",
      "link": null,
      "app_link": null,
      "pregame_only": false,
      "book_event_id": null,
      "markets": [
        {
          "key": "totals",
          "description": "Totals",
          "last_update": "2026-10-06T16:08:43.348327Z",
          "period": null,
          "suspended_at": null,
          "team": null,
          "line_type": "main",
          "outcomes": [
            {
              "name": "Over",
              "description": "",
              "price": -115,
              "point": 6.5,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-10-06T14:19:02.555313Z",
              "last_seen_at": "2026-10-06T16:08:43.348327Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": null,
              "side": null
            },
            {
              "name": "Under",
              "description": "",
              "price": -105,
              "point": 6.5,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-10-06T14:19:02.555313Z",
              "last_seen_at": "2026-10-06T16:08:43.348327Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": null,
              "side": null
            }
          ]
        }
      ]
    }
  ]
}

The response shape is the-odds-api compatible — events, bookmakers, markets, outcomes — so migrating is usually a base URL change.

Try it

1. List MLB events to get an event id:

curl "https://api.prop-line.com/v1/sports/baseball_mlb/events?apiKey=YOUR_API_KEY"

2. Pull total runs for one game across every book — this exact URL works right now:

curl "https://api.prop-line.com/v1/sports/baseball_mlb/events/322322/odds?apiKey=YOUR_API_KEY&markets=totals"

3. After the game, get the graded outcomes with the actual stat:

curl "https://api.prop-line.com/v1/sports/baseball_mlb/events/322322/results?apiKey=YOUR_API_KEY"

Steps 1 and 2 run on the free tier. Step 3 — prop resolution — starts on Hobby at $9/mo. See pricing.

Get your free MLB odds API key

1,000 requests / day. No credit card. The same key covers every sport and every market — not just this one.

Free tier includes 1,000 requests/day. Upgrade anytime.