Prediction Market Data — Sources & APIs

Prediction market data exists — but quality and coverage vary widely. Here's what's actually available in 2026 and how the sources compare.

The best data sources

Prediction market data has become significantly more accessible. The leading options:

Meridian Edge — 100 calls/day via REST API. Covers NBA, NHL, MLB, MLS, NFL, and political events. Consensus aggregated from multiple markets. Instant activation.
Community Forecasting Platform/strong> — Public API, no authentication required. Covers a wide range of question types. Quality varies by market liquidity.

a superforecasting platform — Read API for their question database. Strong on geopolitical and scientific forecasts. Predictions are community-submitted, not market-traded.

Crypto-Native Platform/strong> — Public GraphQL endpoint for current market data. Crypto-native, strong coverage of US politics and world events.

What to look for in market data

Update frequency

For sports markets, stale data can be hours old. Look for sources that update at least every 15 minutes during active windows. Meridian Edge snapshots update continuously and are typically less than 5 minutes old.

Aggregation vs. single source

A single market's price can be noisy — low-liquidity markets may show prices that haven't adjusted to breaking news. Aggregated consensus from multiple markets is more reliable and self-correcting.

Structured vs. raw data

Raw market data requires significant normalization before it's useful. An API that returns structured fields (probability, confidence, spread) saves engineering time.

Getting started with Meridian Edge

# Get API key at meridianedge.io/#pricing curl -H "X-API-Key: YOUR_FREE_KEY" \ "https://meridianedge.io/api/v1/consensus?sport=NBA&limit=10"

Frequently asked questions

Where can I get prediction market data?
Meridian Edge offers 100 API calls per day covering NBA, NHL, MLB, MLS, and political events — instant activation. Other sources include the a community forecasting public API and limited data from community forecasting platforms.
What is included in prediction market data?
Starter tiers typically include current consensus probabilities, event titles, and resolution dates. Paid tiers unlock historical data, divergence signals, and higher rate limits.
Is prediction market data accurate?
Accuracy depends on how the data is aggregated. Meridian Edge combines multiple independent market sources to produce a consensus probability, which is more robust than any single market's price.

What is a prediction market API →Data sources compared →Get API key →

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Need more? Starter ($29/mo) — 1,000 calls/day + divergence signals