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Yoyo Market Platform Overview

Yoyo Market (hereinafter “Yoyo”) is a prediction market platform where users trade on the outcomes of real-world events. By buying and selling shares in binary outcome markets, participants express their beliefs about the likelihood of future events — and are rewarded when they are right.

What Are Prediction Markets?​

Prediction markets are exchange-traded markets where the price of a contract reflects the crowd's estimated probability of an event occurring. Each market has two sides — YES and NO — and the prices of both sides always sum to 100%.

When an event resolves, holders of the winning side receive the full contract value while the losing side receives nothing. The market price at any point in time represents the collective probability estimate for that outcome.

Key Features​

Binary Outcome Markets (YES / NO)​

Every market on Yoyo is a binary contract. You can buy YES if you think an event will happen, or NO if you think it will not. Prices range from 0% to 100% probability.

Two Trading Mechanisms​

Yoyo supports two ways to trade, and both can be active on the same market:

  • Orderbook — Place limit orders at a specific price or market orders that match against existing orders from other users. This works like a traditional exchange with a bid/ask spread.
  • LMSR Automated Market Maker (AMM) — Trade instantly against an algorithmic market maker that always provides liquidity. No counterparty is needed. The AMM uses the Logarithmic Market Scoring Rule (LMSR) to price contracts.

P2P Fiat Exchange​

A built-in peer-to-peer exchange allows users to buy and sell USDT for fiat currency (RUB) directly with other users. Ads-based system with integrated per-order chat.

Card Deposits and Crypto Withdrawals​

Deposit funds via bank card or withdraw via cryptocurrency (Solana, EVM chains).

Referral System​

Invite other users and earn bonuses through the referral program. Each user receives a unique referral code upon registration.

Technical Details​

Price and Money Format​

All monetary values on the platform are expressed in cents (kopecks for RUB). This means:

Display ValueInternal Value
$1.00100
$100.0010000

Market prices use the same integer format, where 0 = 0% probability and 10000 = 100% probability. The YES and NO prices for any market always sum to 10000.

Base API URL​

All API endpoints are served under:

https://yoyo.market/api/v1/

Authentication​

Yoyo uses HTTP-only cookies for authentication. After signing in or verifying your email, the server sets two cookies:

  • access_token — Short-lived JWT (20 minutes) used to authenticate requests.
  • refresh_token — Longer-lived token (72 hours) used to obtain new access tokens.

These cookies are sent automatically with every request. No manual Authorization header is needed when using a browser or cookie-aware HTTP client.

  • Quickstart Guide — Create an account and place your first trade in 5 minutes.
  • Key Concepts — Understand events, pools, markets, positions, and settlement.