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Vita Protocol’s Central Limit Order Book (CLOB) brings professional trading capabilities to Near Protocol, offering traders precise control over their orders alongside our Concentrated Liquidity Market Maker (CLMM).

Order Types

Limit & Market Orders

Price-Time Priority

Fair Order Matching

Gas Efficiency

Optimized for Near

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What is a Central Limit Order Book?

A Central Limit Order Book (CLOB) is a trading mechanism where buy and sell orders are collected and matched based on price and time priority. Unlike automated market makers, CLOB allows traders to specify exact prices for their trades.
CLOB Trading Interface

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Order Book Interface

CLOB Order Book Interface

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Key Features

Set your exact buy or sell price. Orders execute only when market reaches your specified price.Benefits:
  • No price slippage
  • Better price control
  • Maker fees (if applicable)

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Order Book Structure

Order Book Interface
The order book displays:
  • Bid Orders: Buy orders sorted by highest price first
  • Ask Orders: Sell orders sorted by lowest price first
  • Order Depth: Quantity available at each price level
  • Spread: Difference between best bid and best ask

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Interactive Order Book

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How CLOB Works

1

Place Your Order

Choose between limit or market order, specify price (for limit orders) and quantity
2

Order Matching

The matching engine processes orders based on price-time priority:
  • Best price gets matched first
  • Earlier orders at same price have priority
  • Maximum 50 matches per order
3

Settlement

Matched orders are settled instantly on Near Protocol
  • Tokens transferred automatically
  • Fees deducted from trade

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Markets and Trading Pairs

Vita CLOB supports dynamic market creation with any token pair. Each market is identified by:
  • Base token (the asset being traded)
  • Quote token (the currency used for pricing)
  • Unique market ID
Market creation requires a deposit of 7 milliNEAR. Markets can be created with any combination of tokens. Available trading pairs will be announced at launch.

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Fee Structure

Trading fees are set per market when created:
  • Fee calculation: (amount * 10000) / (10000 + fee_rate)
  • Fees are deducted from the quote token for buy orders
  • Each market can have different fee rates set by the market creator
  • View specific market fees: near view [TBD] get_market '{"market_id": "1"}'
Self-trading (trading with your own orders) is prevented by the system

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Technical Specifications

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Order Limits

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minimum_order_size
string
1 lot (actual amount depends on market’s lot_decimals configuration)
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maximum_matches_per_order
number
50
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price_precision
string
Determined by lot decimal configuration

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Contract Information

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platform
string
Near Protocol
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programming_language
string
Rust
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sdk_version
string
near-sdk 5.7.0
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testnet_address
string
[TBD]
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mainnet_address
string
[TBD]

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Query Current Values

# View all markets
near view [TBD] get_markets '{}'

# View specific market details (including fee rate)
near view [TBD] get_market '{"market_id": "1"}'

# View whitelisted tokens
near view [TBD] get_whitelisted_tokens '{}'

# View match limit
near view [TBD] get_match_limit '{}'

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Advantages of CLOB

Price Discovery

Transparent price formation through visible supply and demand

No Slippage

Limit orders execute at exact specified prices

Professional Trading

Advanced order types and trading strategies

Fair Execution

Price-time priority ensures fairness

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Getting Started

1

Connect Wallet

Connect your Near-compatible wallet to access CLOB
2

Select Market

Choose your trading pair from available markets
3

Place Order

Submit limit or market orders based on your strategy
4

Manage Positions

Track and manage your open orders

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CLOB vs AMM Comparison

FeatureCLOBAMM
Price ControlExact price specificationMarket-determined prices
Liquidity SourceOrder book depthLiquidity pools
SlippageNone for limit ordersVaries with trade size
Best ForProfessional tradersSimple swaps

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Security Features

On-Chain Settlement

All trades settle directly on Near Protocol

Self-Trade Prevention

Cannot trade with your own orders

Gas Optimization

Efficient matching with gas limits

Transparent Matching

All matches recorded on-chain

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Next Steps

Order Types

Learn about limit and market orders in detail

Place Orders

Step-by-step guide to placing your first order

Order Matching

Understand how orders are matched

Manage Orders

Track and manage your orders