Event Resolver API
Resolve real-world events for prediction market settlement. Aggregates data from multiple sources to determine if an event occurred, with confidence scores and source attribution.
What It Does / Endpoints
| Endpoint | Method | Price | Description |
|---|---|---|---|
/api/resolve | POST | $0.005 | Full event resolution with confidence score and sources |
/api/verify | POST | $0.003 | Quick-verify a factual claim (true/false/unverifiable) |
/api/price-check | POST | $0.002 | Check if crypto price crossed a threshold |
Example Request/Response
POST /api/resolve
curl -X POST https://event-resolver-production.up.railway.app/api/resolve \
-H "Content-Type: application/json" \
-d '{"question": "Did BTC reach $100K?", "type": "binary"}'
Response:
{
"question": "Did BTC reach $100K?",
"resolved": true,
"outcome": "Yes",
"confidence": 95,
"sources": [
{
"name": "CoinGecko",
"url": "https://www.coingecko.com/en/coins/bitcoin",
"agrees": true
}
],
"timestamp": "2026-04-13T12:00:00.000Z",
"type": "binary"
}
POST /api/verify
curl -X POST https://event-resolver-production.up.railway.app/api/verify \
-H "Content-Type: application/json" \
-d '{"claim": "Bitcoin is above $90,000"}'
Response:
{
"claim": "Bitcoin is above $90,000",
"verdict": "true",
"confidence": 95,
"evidence": [
"bitcoin current price: $102,450 (via CoinGecko)",
"Threshold $90,000 above: crossed"
]
}
POST /api/price-check
curl -X POST https://event-resolver-production.up.railway.app/api/price-check \
-H "Content-Type: application/json" \
-d '{"asset": "bitcoin", "threshold": 100000, "direction": "above"}'
Response:
{
"asset": "bitcoin",
"currentPrice": 102450.23,
"threshold": 100000,
"direction": "above",
"crossed": true,
"crossedAt": "2026-04-13T12:00:00.000Z",
"timestamp": "2026-04-13T12:00:00.000Z"
}
Use Cases
- Prediction market settlement -- Automated oracle for resolving binary, numeric, and categorical outcomes on-chain
- Fact checking -- Quick verification of claims with confidence scores and source attribution
- Price monitoring -- Check if crypto assets crossed key price thresholds for contract settlement
- Event tracking -- Determine if real-world events (elections, sports, policy changes) occurred
- On-chain resolution -- Provide objective data for HIP-4, Polymarket, or custom smart contract settlement
MCP Integration
Add to your Claude Desktop or Cursor config:
{
"mcpServers": {
"event-resolver": {
"url": "https://event-resolver-production.up.railway.app/sse"
}
}
}
Payment
All endpoints use x402 protocol -- pay-per-call with USDC on Base L2. No API keys, no subscriptions. Your agent pays automatically.
Related APIs
- Token Price API -- Get crypto token prices without resolution logic
- Prediction Markets API -- List prediction market odds and contracts
- Research Fact Check API -- Deep fact checking with full source citations
- Trust Score API -- Evaluate trustworthiness of domains and wallets
- Stock Quote API -- Real-time stock price quotes