Prediction Market Data API

Summary: REST API for real-time prediction market consensus probabilities. JSON responses, API key authentication, Python and Node.js SDKs available.

One API, Every Market

Meridian Edge aggregates data from regulated prediction market platforms into a single, normalized API. Instead of managing connections to multiple platforms — each with different schemas, authentication methods, and rate limits — you call one endpoint and get structured, devigged consensus data.

Core Endpoints

Endpoint	Returns
`GET /api/v1/consensus`	Aggregated probabilities for all active events
`GET /api/v1/opportunities`	Events with high cross-platform divergence
`GET /api/v1/markets`	All active markets with metadata
`GET /api/v1/settlements/recent`	Recently resolved events with outcomes
`GET /api/v1/signals/recent`	Recent directional market indicators

All endpoints return JSON. Authentication is via X-API-Key header. Full reference at docs.html.

Response Format

{
  "event_key": "nba-lakers-celtics-2026-04-01",
  "question": "Lakers vs Celtics — Lakers win?",
  "probability": 0.41,
  "confidence": 0.94,
  "sources": 3,
  "spread": 0.03,
  "vertical": "sports",
  "last_updated": "2026-03-28T14:22:00Z"
}

SDK Support

Native SDKs eliminate boilerplate. Both handle authentication, retries, and rate limiting automatically:

Python: pip install meridianedge — Python guide
Node.js: npm install meridian-edge — JavaScript guide
MCP Server: uvx meridian-edge-mcp — AI agent integration

Data Coverage

The API covers 27,000+ active markets across sports (NBA, NHL, NFL, MLB, MLS), politics, economics, and global events. Data updates every 10 minutes, with the full pipeline refreshing in 14 seconds.

Reliability

The API runs on dedicated infrastructure with 99.9%+ uptime. Live status is always available at status.html. Automated monitoring alerts if any endpoint degrades.

Frequently Asked Questions

What data does the prediction market API return?

The API returns consensus probabilities, confidence ratings, cross-platform spread, source counts, trend data, divergence opportunities, and settlement outcomes — all aggregated from regulated prediction markets.

What authentication does the API use?

The API uses API key authentication via the X-API-Key header. Keys are issued instantly upon signup. Full documentation is at meridianedge.io/docs.html.

Is this data investment advice?

No. All data provided through the API is for informational purposes only and does not constitute investment, financial, or trading advice. Prediction market participation involves risk of loss.

Get Full Access

Starter plan includes API access, the live dashboard, divergence alerts, and email digests.

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