Open-source Solana Prediction Market smart contract built with Anchor

Open-source Solana Prediction Market smart contract built with Anchor. Enables creation of binary YES/NO outcome markets with bonding curve trading (SOL tokens), platform + creator fees, Metaplex metadata, whitelist support, and optional backend co-signing for controlled launches.

I open-sourced solana-prediction-market-smart-contract for developers in Solana / Anchor smart contract development. This post walks through what it does, how the pieces fit together, and how to run it locally.

Live demo / site: https://takes.fun/

Why I built this

• Automate trading or snipe strategies with a typed codebase
• Backtest ideas before deploying with real capital
• Extend the bot with your own risk rules and market filters

Most tutorials stop at a smart contract or a UI mockup. I wanted a complete vertical slice — wallet flow, on-chain logic, backend state, and a responsive frontend — so you can study or fork a production-shaped codebase.

What it does

• Open-source Solana Prediction Market smart contract built with Anchor
• Enables creation of binary YES/NO outcome markets with bonding curve trading (SOL tokens), platform + creator fees, Metaplex metadata, whitelist support, and optional backend co-signing for controlled launches
• Platform fees on buy and sell (standard and reduced “small” fee tiers for whitelisted users).
• Creator fees on buy and sell.
• Cross-side liquidity shift on buys (configurable cross_sol_factor), which links YES and NO reserve dynamics.
• amount — Input amount (lamports for buy, token amount for sell depending on direction).
• direction — 0 = buy, 1 = sell.
• token_type — 0 = NO, 1 = YES.

Architecture at a glance

• On-chain program — Anchor/Rust logic for escrow, rooms, and settlement
• Application layer — TypeScript backend/frontend tying on-chain and off-chain flows
• Feature — Open-source Solana Prediction Market smart contract built with Anchor
• Feature — Enables creation of binary YES/NO outcome markets with bonding curve trading (SOL tokens), platform + creator fees, Metaplex metadata, whitelist support, and optional backend co-signing for controlled launches
• Feature — Platform fees on buy and sell (standard and reduced “small” fee tiers for whitelisted users).

User Wallet  →  On-chain Program  →  VRF / Settlement
                    ↓
              Backend (API + WebSockets)  →  MongoDB / state
                    ↓
                 Frontend UI (real-time)

Adjust the diagram to match your repo layout if components differ.

Tech stack

• Rust
• Solana
• Anchor
• TypeScript

Quick start

git clone https://github.com/DexCrancer/solana-prediction-market-smart-contract.git
cd solana-prediction-market-smart-contract

Setup steps:

1. Install dependencies (see README — typically npm install or yarn)
2. Copy .env.example to .env and fill in RPC, wallet, and API keys
3. Run local validator or point to devnet/mainnet as documented
4. Start the backend and frontend; connect wallet and create a test room

See the full README for environment variables, deploy scripts, and test commands: https://github.com/DexCrancer/solana-prediction-market-smart-contract

What to explore in the repo

• Program / contract entrypoints and account models
• API routes and WebSocket event handlers
• Frontend wallet adapter and game room components
• Tests, scripts, and deployment configs

Contributing

Issues and PRs are welcome. If this helped you learn something, a ⭐ on GitHub makes it easier for others to find.

Links

• GitHub: https://github.com/DexCrancer/solana-prediction-market-smart-contract
• Website: https://takes.fun/

Disclaimer: Educational content only. Not financial advice. Gambling and trading involve risk; use responsibly and comply with local laws.

anchor #bondingcurve #decentralizedbetting #forecasting #openbook #predictionmarket