FanDuel webhooks and live stream

Stop polling: take each change the moment it is collected, on a connection or at your URL.

Stream

Server-Sent Events with Last-Event-ID resume. Free sees it five minutes behind; concurrent connections scale with the plan.

Webhooks

HMAC-signed POSTs with retries and a delivery log, up to five endpoints, on plans that list Webhooks.

Same frames

Stream events, webhook bodies and change feed rows carry the same fields and cursors.

What it returns now

Real rows, 5 min delay, as of 3:25 PM ET

id: 36350
event: change
data: {"cursor":"36350","kind":"line_move","league":"NCAAF","player":"Antonio Jordan","stat":"receiving_yards","previous":{"line":34.5,"over_american":-114},"current":{"line":30.5,"over_american":-114},"at":"2026-11-06T20:24:13.461Z"}

id: 36311
event: change
data: {"cursor":"36311","kind":"line_move","league":"NBA","player":"Payton Pritchard","stat":"pra","previous":{"line":19.5,"over_american":-128},"current":{"line":20.5,"over_american":-102},"at":"2026-11-06T20:23:58.749Z"}

id: 36310
event: change
data: {"cursor":"36310","kind":"line_move","league":"NBA","player":"Neemias Queta","stat":"pra","previous":{"line":18.5,"over_american":100},"current":{"line":17.5,"over_american":-128},"at":"2026-11-06T20:23:58.749Z"}

Endpoints and parameters

Code

curl "https://fanduelapi.com/api/v1/stream?league=NBA" \
  -H "Authorization: Bearer $FANDUEL_API_KEY"

import hmac, hashlib, time

# X-Webhook-Signature: t=<unix seconds>,v1=<hex HMAC-SHA256 of "t.raw_body">
def verified(raw_body: bytes, header: str, secret: str, tolerance=300) -> bool:
    parts = dict(item.split("=", 1) for item in header.split(","))
    t = int(parts["t"])
    if abs(time.time() - t) > tolerance:
        return False
    expected = hmac.new(secret.encode(), f"{t}.".encode() + raw_body, hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected, parts.get("v1", ""))

Keys look like fd_.... Keep one in the FANDUEL_API_KEY environment variable on your server, never in browser code. Every response's meta says which plan answered, how far behind it is and how fresh the collection is.

Which plans include it

• FreeStream, 5 minutes behind; no webhooks
• DeveloperStream; webhooks from Production
• ProductionStream and signed webhooks
• ScaleStream and signed webhooks

Read from the plans on the pricing page. Every request counts against the monthly and per-minute allowance; request quotas explains how.

Works well with

• Change feedKeep a local copy of the board current by reading only what changed since your last call./api/v1/changes
• Line historyReplay a prop or a game line from the first time it was seen to now, move by move./api/v1/props/{id}/history
• WorkspaceRun the integration with keys you can rotate in seconds and limits you can see./dashboard/keys