Wrap-Up: End-to-End & What’s Next

You’ve built an AI-powered prediction market. Now let’s walk through the complete flow from start to finish.

Complete End-to-End Flow

Here’s the full journey from market creation to claiming winnings:

┌─────────────────────────────────────────────────────────────────┐
│                    COMPLETE FLOW                                │
├─────────────────────────────────────────────────────────────────┤
│                                                                 │
│  0. DEPLOY CONTRACT (Foundry)                                   │
│     └─► forge create → PredictionMarket deployed on Sepolia     │
│                                                                 │
│  1. CREATE MARKET (HTTP Trigger)                                │
│     └─► HTTP Request → CRE Workflow → EVM Write → Market Live   │
│                                                                 │
│  2. PLACE PREDICTIONS (Direct Contract Calls)                   │
│     └─► Users call predict() with ETH stakes                    │
│                                                                 │
│  3. REQUEST SETTLEMENT (Direct Contract Call)                   │
│     └─► Anyone calls requestSettlement() → Emits Event          │
│                                                                 │
│  4. SETTLE MARKET (Log Trigger)                                 │
│     └─► Event → CRE Workflow → AI Query → EVM Write → Settled   │
│                                                                 │
│  5. CLAIM WINNINGS (Direct Contract Call)                       │
│     └─► Winners call claim() → Receive ETH payout               │
│                                                                 │
└─────────────────────────────────────────────────────────────────┘

Step 0: Deploy the Contract

source .env
cd prediction-market/contracts

forge create src/PredictionMarket.sol:PredictionMarket \
  --rpc-url "https://ethereum-sepolia-rpc.publicnode.com" \
  --private-key $CRE_ETH_PRIVATE_KEY \
  --broadcast \
  --constructor-args 0x15fc6ae953e024d975e77382eeec56a9101f9f88

Save the deployed address and update config.staging.json:

export MARKET_ADDRESS=0xYOUR_DEPLOYED_ADDRESS

Step 1: Create a Market

cd .. # make sure you are in the prediction-market directory
cre workflow simulate my-workflow --broadcast

Select HTTP trigger (option 1), then enter:

{"question": "Will Argentina win the 2022 World Cup?"}

Step 2: Place Predictions

# Predict YES on market #0 with 0.01 ETH
cast send $MARKET_ADDRESS \
  "predict(uint256,uint8)" 0 0 \
  --value 0.01ether \
  --rpc-url "https://ethereum-sepolia-rpc.publicnode.com" \
  --private-key $CRE_ETH_PRIVATE_KEY

Step 3: Request Settlement

cast send $MARKET_ADDRESS \
  "requestSettlement(uint256)" 0 \
  --rpc-url "https://ethereum-sepolia-rpc.publicnode.com" \
  --private-key $CRE_ETH_PRIVATE_KEY

Save the transaction hash!

Step 4: Settle via CRE

cre workflow simulate my-workflow --broadcast

Select Log trigger (option 2), enter the tx hash and event index 0.

Step 5: Claim Winnings

cast send $MARKET_ADDRESS \
  "claim(uint256)" 0 \
  --rpc-url "https://ethereum-sepolia-rpc.publicnode.com" \
  --private-key $CRE_ETH_PRIVATE_KEY

What’s Next?

🏆 Convergence: A Chainlink Hackathon

cre-hackathon-2026

The Convergence Hackathon invites you to create advanced smart contracts using the Chainlink Runtime Environment, with $100K in prizes up for grabs.

Connect chains, data, AI, and enterprise systems - all in one workflow.

Put your new CRE skills to the test! Join the upcoming hackathon and build something amazing.

Ideas to explore: