Live Odds API Integration: Step-by-Step for Sportsbook Developers

What a Live Odds API Integration Actually Involves

A Live odds API integration is not a single endpoint call. It is a multi-phase engineering project that touches your front-end display layer, your bet placement engine, your player wallet, and your settlement logic. Understanding the full scope prevents mid-integration surprises that delay your launch.

WSGaming‘s Live Odds API uses a combination of REST for discovery and configuration, WebSocket for real-time push, and webhook callbacks for settlement events. Here is the step-by-step implementation path our integration team guides every new operator through.

Phase 1: Authentication and Credential Setup

WSGaming’s Live odds API uses API key authentication with request signing for production endpoints. After contract signing, credentials are provisioned within 24 hours. Sandbox credentials are issued immediately on request and provide full endpoint parity with production — every endpoint available in production is available in sandbox, including live market simulation for SEA league events.

Key implementation point: store your API credentials in environment variables, not in application code. WSGaming’s security team audits client configurations before production go-live and will flag hardcoded credentials as a blocking issue.

Phase 2: Market Discovery via REST

Before subscribing to real-time pushes, your application needs to discover available markets. Operators beginning a sports odds feed integration should start here: the market discovery endpoint returns the event list (upcoming and live events with IDs), market types per event (1X2, Asian Handicap, Over/Under, specials), and the initial odds state for each market — used to populate your display before the WebSocket connection is established.

Implementation note: cache the initial odds state from discovery. Do not rely on the WebSocket stream to populate the initial display — the stream delivers updates, not full state. A player loading your odds page should see populated odds immediately from your cache, with WebSocket updates flowing in real time thereafter.

Phase 3: WebSocket Subscription for Real-Time Updates

The core of any Odds Feed API integration is the WebSocket subscription. Reliable odds data delivery at this layer depends on a topic-based subscription model: you subscribe to specific event IDs or market types, and receive push messages only for subscribed topics.

Each WebSocket message contains: market ID, market type, update type (odds change, suspension, reinstatement, settlement), new odds values, and a sequence number for deduplication. Your application must handle all four update types — a missing suspension handler is the most common cause of production incidents in new operator integrations.

Phase 4: Bet Placement and Acceptance

Bet placement calls the REST bet acceptance endpoint synchronously. WSGaming’s Live odds API returns an acceptance response within 150ms for standard requests. The response includes: accepted/rejected status, acceptance odds (may differ from display odds if market moved during the request), and a bet reference ID for settlement tracking.

Implement “odds changed” handling on your bet slip. When a bet is accepted at different odds than displayed, your interface must show the player the new odds and require confirmation before proceeding. This is both a regulatory requirement in most jurisdictions and a player trust issue.

Phase 5: Settlement Handling via Webhook

Settlement events are delivered via webhook callback after event completion. Each settlement message contains: event ID, market results, bet reference IDs affected, and settlement type (win/loss/void/push). Your settlement handler must process these idempotently — webhook delivery guarantees at-least-once, so duplicate settlement messages must not result in double payouts.

WSGaming’s integration team reviews your settlement handler logic before production go-live as standard practice. Settlement errors are the highest-severity issue in sportsbook operations — prevention at integration time is non-negotiable.

Phase	Endpoint Type	Key Implementation Concern
1. Authentication	API key + signing	Store credentials in env vars, not code
2. Market Discovery	REST GET	Cache initial state; don’t rely on WebSocket for first load
3. Real-Time Updates	WebSocket push	Handle all 4 update types including suspension
4. Bet Placement	REST POST	Handle odds-changed response on bet slip
5. Settlement	Webhook callback	Idempotent processing to prevent double payouts