Odds API by market / MLS

MLS Player Assists API

Live player_assists 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 MLS player assists is

Assists by one player, priced as milestone rungs (1+, 2+) rather than as an Over/Under. Books disagree about what counts as an assist more than they disagree about goals, so cross-book comparison matters here.

How we settle it. Graded at the rung's threshold against assists in the match's player statistics.

1
books quoting it on the next event
4/12
of the next MLS events carry it right now
2,363
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 30 September 2026.

Books posting MLS player assists

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.

ParlayPlay

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 MLS player assists 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.

2,363 player assists outcomes settled in the last 4 days across 5 books. The 12 most recent:

PlayerBetActualResult
Kaick da Silva FerreiraYes0.0lost
Amar Sejdic1+ Assists—void
Anass Zaroury1+ Assists0.0lost
Anass Zaroury2+ Assists0.0lost
André Filipe Tavares GomesYes—void
Brais MéndezYes0.0lost
—Anass Zaroury0.0lost
—Andre Gomes—void
Amar Sejdic1+ Assists—void
Andre Gomes1+ Assists—void
Brais Mendez1+ Assists0.0lost
Alexander AravenaOver 0.50.0lost

Hit rate, last 4 days

8.1% of 1401 settled player assists legs hit (114 yes, 1287 no). Counted on the YES side only — books that price this two-way contribute their Over leg, not both. That is the base rate across the whole priced field, not a per-player figure.

Read off 1,401 YES legs out of 2,363 settled outcomes on this market. The rest are the Under side from books that price it two-way, which answers a different question.

Per-player hit rates and L5 / L10 / L20 splits live on /trends.

Live response

Captured from the real endpoint on St. Louis City @ New York Red Bulls, 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": "red_bulls",
  "away_team_key": "st_louis",
  "home_team_id": null,
  "away_team_id": "espn.soccer:21812",
  "home_team_logo_url": null,
  "away_team_logo_url": "https://a.espncdn.com/i/teamlogos/soccer/500/21812.png",
  "id": "312697",
  "sport_key": "soccer_mls",
  "home_team": "New York Red Bulls",
  "away_team": "St. Louis City",
  "commence_time": "2026-09-30T23:30:00Z",
  "live": false,
  "is_outright": false,
  "tournament": null,
  "tour": null,
  "last_update": "2026-09-30T16:05:38.423832Z",
  "merged_from_event_ids": null,
  "bookmakers": [
    {
      "key": "parlayplay",
      "title": "ParlayPlay",
      "last_update": "2026-09-30T15:59:40.789826Z",
      "link": null,
      "app_link": null,
      "pregame_only": false,
      "book_event_id": null,
      "markets": [
        {
          "key": "player_assists",
          "description": "player_assists",
          "last_update": "2026-09-30T15:59:40.789826Z",
          "period": null,
          "suspended_at": null,
          "team": null,
          "outcomes": [
            {
              "name": "Yes",
              "description": "Alexandru Irinel Măţan",
              "price": 268,
              "point": null,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-09-30T15:59:40.796629Z",
              "last_seen_at": "2026-09-30T15:59:40.789826Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": null,
              "side": null
            },
            {
              "name": "Yes",
              "description": "Cade Cowell",
              "price": 235,
              "point": null,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-09-30T15:59:40.796629Z",
              "last_seen_at": "2026-09-30T15:59:40.789826Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": "espn:285698",
              "side": null
            },
            {
              "name": "Yes",
              "description": "Cameron Harper",
              "price": 372,
              "point": null,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-09-30T15:59:40.796629Z",
              "last_seen_at": "2026-09-30T15:59:40.789826Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": "espn:270302",
              "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 MLS events to get an event id:

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

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

curl "https://api.prop-line.com/v1/sports/soccer_mls/events/312697/odds?apiKey=YOUR_API_KEY&markets=player_assists"

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

curl "https://api.prop-line.com/v1/sports/soccer_mls/events/312697/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 MLS 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.