Seeryx

Seeryx is a non-custodial prediction market on Solana where traders buy and sell shares on politics, sports, esports, finance, crypto, and other markets. Each share pays $1.00 if its outcome happens, and prices come from a real central limit order book rather than an AMM.

For builders, Seeryx exposes the same API the website uses. Public endpoints return markets, live and past rounds, order books, trades, volume, fees, the leaderboard, and event questions without an account. Traders sign in with Sign-In With Solana: one wallet signature opens a trading session, and the session key signs every order on the trader's own machine. The API supports limit, market, and post-only orders, batches of up to 15 orders, cancel-all, and split/merge of outcome pairs, with idempotency keys and typed errors. WebSocket streams push a round's order books and trades and the trader's own account in real time.

Funds stay in each user's own on-chain account in the Seeryx program, and every fill settles on Solana. The exchange relays and pays network fees for deposits, trading, and withdrawals, so wallets need no SOL. Event markets are resolved by the UMA optimistic oracle and brought to Solana through Wormhole. Market makers earn liquidity points for resting orders near the midpoint.

Official SDKs for Python (sync and asyncio) and Rust (tokio) wrap the API, sign orders, and inspect every server-prepared transaction before it is signed. The developer documentation covers authentication, order-signing byte layouts, fees with live numbers, rate limits, and a market-making bot walkthrough.