POK Vault SDK

TypeScript SDK for estimating cross platform merge and split costs for prediction market outcome tokens on POK Vault.

Features

• Market Access: Get market details supported by POK Vault
• Estimation: Calculate merge (early exit) and split costs

Installation

npm install @pokvault/sdk
# or
yarn add @pokvault/sdk
# or
pnpm add @pokvault/sdk

Quick Start

The typical workflow is: Initialize → Get market by key → Estimate

import { POKVaultSDK, parseUnits } from '@pokvault/sdk';

// 1. Initialize the SDK
const sdk = new POKVaultSDK({
  bscRpcUrl: 'https://your-rpc-url.com', // Recommended: Provide your own RPC for better performance
});
// Note: If no RPC URL is provided, the default BSC RPC will be used, but performance may be slow

await sdk.initialize();

// 2. Get market using market key
const market = sdk.getMarket('opinion-3019_polymarket-537486');

// 3. Use the first available pair for estimation
if (market && market.pairs.length > 0) {
  const pair = market.pairs[0];
  
  // Estimate merge (early exit)
  const mergeEstimate = await sdk.estimateMerge(
    pair.outcomeTokenA,
    BigInt(pair.outcomeIdA),
    pair.outcomeTokenB,
    BigInt(pair.outcomeIdB),
    parseUnits('10', 18) // Amount in USDT decimals (18)
  );
  
  console.log('USDT to receive:', mergeEstimate.estimatedUsdtReceived);
  console.log('Vault has liquidity:', mergeEstimate.vaultHasLiquidity);
}

Understanding Market Keys

Market keys uniquely identify arbitrage opportunities between Polymarket and Opinion markets.

Format

opinion-{marketId}_polymarket-{marketId}

Market ID in the key refers to a specific child market, NOT the parent topic.

Example: Opinion

• Topic ID 196: "How much revenue will the U.S. raise from tariffs in 2025?" (Parent topic)
  • Market ID 3018: "How much revenue will the U.S. raise from tariffs in 2025? - <$100b" (Child market)
  • Market ID 3019: "How much revenue will the U.S. raise from tariffs in 2025? - $200-500b" (Child market)
  • Market ID 3020: "How much revenue will the U.S. raise from tariffs in 2025? - >$500b" (Child market)

The same is true for polymarket markets as well

Real Market Key Example

// Market key for: "Will the U.S. collect between $200b and $500b in revenue in 2025?"
const marketKey = 'opinion-3019_polymarket-537486';

// opinion-3019: Opinion child market for "$200-500b" outcome
// polymarket-537486: Corresponding Polymarket market

const market = sdk.getMarket(marketKey);

Usage Examples

Estimating Merge (Early Exit)

Merge allows you to exchange opposite outcome tokens (e.g., NO from Polymarket + YES from Opinion) for USDT at a discounted rate.

import { POKVaultSDK, parseUnits } from '@pokvault/sdk';

const sdk = new POKVaultSDK();
await sdk.initialize();

// Get market using market key
const market = sdk.getMarket('opinion-3019_polymarket-537486');

if (market && market.pairs.length > 0) {
  const pair = market.pairs[0];
  
  // Estimate merge for 10 tokens worth
  const mergeEstimate = await sdk.estimateMerge(
    pair.outcomeTokenA,
    BigInt(pair.outcomeIdA),
    pair.outcomeTokenB,
    BigInt(pair.outcomeIdB),
    parseUnits('10', 18) // Amount in USDT decimals (18)
  );
  
  console.log('USDT to receive:', mergeEstimate.estimatedUsdtReceived);
  console.log('Vault has liquidity:', mergeEstimate.vaultHasLiquidity);
  console.log('Available liquidity:', mergeEstimate.availableVaultLiquidity);
}

Estimating Split

Split allows you to exchange USDT for opposite outcome tokens.

import { POKVaultSDK, parseUnits } from '@pokvault/sdk';

const sdk = new POKVaultSDK();
await sdk.initialize();

// Get market using market key
const market = sdk.getMarket('opinion-3019_polymarket-537486');

if (market && market.pairs.length > 0) {
  const pair = market.pairs[0];
  
  // Estimate split for 10 USDT
  const splitEstimate = await sdk.estimateSplit(
    pair.outcomeTokenA,
    BigInt(pair.outcomeIdA),
    pair.outcomeTokenB,
    BigInt(pair.outcomeIdB),
    parseUnits('10', 18) // 10 USDT (18 decimals)
  );
  
  console.log('Tokens to receive:', splitEstimate.estimatedTokensReceived);
  console.log('Vault has tokens:', splitEstimate.vaultHasTokens);
}

Advanced: Finding Markets (Optional)

While most users work with market keys directly, you can also discover markets:

// Search by URL pattern (less common)
const markets = sdk.findMarketsByUrl('polymarket.com/market/will-the-us-collect-between-200b-and-500b-in-revenue-in-2025');

// Search by provider, status, or question (less common)
const filteredMarkets = sdk.searchMarkets({
  provider: 'opinion',
  status: 'allowed',
  question: 'revenue',
});

// Get all markets (less common)
const allMarkets = sdk.getAllMarkets();

Advanced: Finding Token Pairs by Addresses (Optional)

// If you already have the token addresses and IDs, you can find the pair directly
const result = sdk.findPair(
  '0x77b0052a346b22ea1f3112e3fcef079567ed9979', // Polymarket token address (bridged on BSC)
  BigInt('50221315964000194764695024582522009520159992363520263771661265416131198909217'), // Polymarket NO token ID
  '0xAD1a38cEc043e70E83a3eC30443dB285ED10D774', // Opinion token address
  BigInt('35513231639220004155539972249688601367978586874260018267891931866327496090530') // Opinion YES token ID
);

if (result) {
  console.log('Market key:', result.market.marketKey);
  // Output: "opinion-3019_polymarket-537486"
}

Checking Vault Liquidity

const liquidity = await sdk.getVaultLiquidity();
console.log('Total assets:', liquidity.totalAssets);
console.log('Available for early exits:', liquidity.availableLiquidity);

API Reference

POKVaultSDK

Constructor

new POKVaultSDK(config?: SDKConfig)

Config Options:

• bscRpcUrl?: string - BSC RPC URL (optional, default: https://bsc-dataseed.binance.org/)
  • ⚠️ Recommended: Provide your own RPC URL for better performance
  • If not provided, a warning will be shown on each estimation call

Core Methods

initialize(): Promise<void>

Initialize the SDK by fetching all supported markets. Must be called before using other methods.

getMarket(marketKey: string): MarketMetadata | undefined

Get a specific market by its market key. This is the primary method for accessing markets.

Example:

const market = sdk.getMarket('opinion-3019_polymarket-537486');

estimateMerge(tokenA: Address, tokenIdA: bigint, tokenB: Address, tokenIdB: bigint, amount: bigint): Promise<MergeEstimationResult>

Estimate merge (early exit) - returns USDT received. Note: amount must be in USDT decimals (18).

estimateSplit(tokenA: Address, tokenIdA: bigint, tokenB: Address, tokenIdB: bigint, usdtAmount: bigint): Promise<SplitEstimationResult>

Estimate split - returns outcome tokens received. Note: usdtAmount must be in USDT decimals (18).

getVaultLiquidity(): Promise<{ totalAssets: bigint; availableLiquidity: bigint }>

Get current vault liquidity information.

Discovery Methods (Optional)

getAllMarkets(): MarketMetadata[]

Get all supported markets.

searchMarkets(params: MarketSearchParams): MarketMetadata[]

Search markets by various criteria.

Params:

• url?: string - URL pattern to match
• provider?: string - Provider ID ('polymarket', 'opinion')
• status?: 'allowed' | 'paused' | 'removed' - Market status
• question?: string - Question text to search

findMarketsByUrl(urlPattern: string): MarketMetadata[]

Find markets containing the given URL pattern.

findPair(tokenA: Address, tokenIdA: bigint, tokenB: Address, tokenIdB: bigint)

Find a specific token pair by token addresses and IDs.

Types

MarketMetadata

interface MarketMetadata {
  marketKey: string;
  question: string;
  providerQuestions: Map<string, string>;
  providerImages: Map<string, string>;
  providerTokenIds: Map<string, { yesTokenId: string; noTokenId: string }>;
  providerUrls: Map<string, string>;
  pairs: OutcomeTokenPair[];
  overallStatus: 'allowed' | 'paused' | 'removed';
}

OutcomeTokenPair

interface OutcomeTokenPair {
  key: string;
  outcomeTokenA: Address;
  outcomeIdA: string;
  outcomeIdAIsYesTokenId: boolean;
  outcomeTokenB: Address;
  outcomeIdB: string;
  outcomeIdBIsYesTokenId: boolean;
  earlyExitAmountContract: Address;
  decimalsA: number;
  decimalsB: number;
  status: 'allowed' | 'paused' | 'removed';
  timestamp: number;
}

MergeEstimationResult

interface MergeEstimationResult {
  estimatedUsdtReceived: bigint;
  vaultHasLiquidity: boolean;
  availableVaultLiquidity: bigint;
  totalAssets: bigint;
  totalEarlyExited: bigint;
}

SplitEstimationResult

interface SplitEstimationResult {
  estimatedTokensReceived: bigint;
  vaultHasTokens: boolean;
  vaultBalanceTokenA: bigint;
  vaultBalanceTokenB: bigint;
}

Constants

import {
  VAULT_ADDRESS,
  POLYGON_ERC1155_BRIDGED_BSC_ADDRESS,
  OPINION_ERC1155_ADDRESS,
  USDT_ADDRESS,
  POLYMARKET_DECIMALS, // 6
  OPINION_DECIMALS, // 18
  USDT_DECIMALS, // 18
  BSC_CHAIN_ID, // 56
} from '@pokvault/sdk';

Token Decimals

When working with token amounts, remember:

• Polymarket tokens: 6 decimals
• Opinion tokens: 18 decimals
• USDT: 18 decimals

Use viem's parseUnits and formatUnits for conversions:

import { parseUnits, formatUnits } from 'viem';

// Parse 100 USDT to wei (18 decimals)
const usdtAmount = parseUnits('100', 18);

// Format wei back to human-readable
const formatted = formatUnits(usdtAmount, 18); // "100"

Error Handling

try {
  const sdk = new POKVaultSDK();
  await sdk.initialize();
  
  const estimate = await sdk.estimateMerge(/* ... */);
  console.log('Estimate:', estimate);
} catch (error) {
  console.error('SDK Error:', error);
}

License

MIT