@dimes-fi/multiply-sdk

TypeScript SDK for the Dimes Multiply leverage protocol. Multiply is an embedded leverage layer for prediction markets — it lets traders take leveraged positions on market outcomes across platforms like Polymarket and Kalshi.

Installation

npm install @dimes-fi/multiply-sdk
# or
pnpm add @dimes-fi/multiply-sdk
# or
yarn add @dimes-fi/multiply-sdk

Quick Start

import { MultiplyClient } from "@dimes-fi/multiply-sdk";

const client = new MultiplyClient({
  apiKey: process.env.DIMES_API_KEY,
});

// Browse prediction markets with leverage
const { data: markets } = await client.getMarkets({
  platform: "polymarket",
  status: "active",
  minLeverage: 3,
});

// Open a 5x leveraged long position
const { position } = await client.createPosition({
  marketId: markets[0].id,
  outcomeId: markets[0].outcomes[0].id,
  side: "long",
  collateralUsdc: 100,
  leverage: 5,
});

console.log(`Opened ${position.leverage}x position — notional: $${position.notionalUsdc}`);

API Reference

new MultiplyClient(config)

| Parameter | Type | Default | Description | |-----------|------|---------|-------------| | apiKey | string | required | API key from app.dimes.fi/developers | | baseUrl | string | https://api.dimes.fi/v1 | API base URL | | chainId | number | 137 | Chain ID (Polygon) | | timeout | number | 30000 | Request timeout in ms |

Markets

client.getMarkets(filter?)

List available prediction markets. Returns PaginatedResponse<Market>.

const { data, total, hasMore } = await client.getMarkets({
  platform: "polymarket",  // Filter by platform
  status: "active",        // "active" | "paused" | "resolved" | "expired"
  minLiquidity: 10_000,    // Minimum USDC liquidity
  minLeverage: 2,          // Minimum leverage available
  query: "election",       // Search query
  limit: 50,               // Results per page (max 200)
  offset: 0,               // Pagination offset
});

client.getMarket(marketId)

Get a single market by ID. Returns Market.

client.getLeverage(marketId)

Get leverage tiers, margin requirements, and funding rates for a market. Returns LeverageInfo.

const info = await client.getLeverage("market_abc123");
console.log(`Max leverage: ${info.maxLeverage}x`);
console.log(`Funding rate: ${info.fundingRateAnnualized}%`);

for (const tier of info.tiers) {
  console.log(`${tier.leverage}x — margin: ${tier.initialMargin * 100}%`);
}

Positions

client.createPosition(params)

Open a leveraged position. Returns PositionResult with the position and transaction hash.

const { position, transaction } = await client.createPosition({
  marketId: "market_abc123",
  outcomeId: "outcome_yes",
  side: "long",           // "long" | "short"
  collateralUsdc: 100,    // Collateral in USDC
  leverage: 5,            // Leverage multiplier
  maxSlippage: 0.01,      // 1% slippage tolerance
});

client.getPosition(positionId)

Get position details including current PnL. Returns Position.

client.getPositions(status?)

List all positions. Optionally filter by "open", "closed", or "liquidated".

client.closePosition(params)

Close a position fully or partially. Returns PositionResult.

// Close 50% of a position
await client.closePosition({
  positionId: "pos_xyz789",
  fraction: 0.5,
  maxSlippage: 0.01,
});

Account

client.getAccount()

Get account summary. Returns Account with balance, locked collateral, unrealized PnL, and health factor.

Types

All types are exported for use in your application:

import type {
  Market,
  Position,
  LeverageInfo,
  LeverageTier,
  CreatePositionParams,
  Account,
} from "@dimes-fi/multiply-sdk";

Examples

See the examples/ directory:

• basic-usage.ts — Browse markets and check account status
• leverage-position.ts — Open, monitor, and close a leveraged position

Error Handling

The SDK throws MultiplyApiError for non-2xx responses:

import { MultiplyApiError } from "@dimes-fi/multiply-sdk";

try {
  await client.createPosition(params);
} catch (err) {
  if (err instanceof MultiplyApiError) {
    console.error(`API error ${err.statusCode}: ${err.body}`);
  }
}

Links

• Dimes website
• API documentation
• Python SDK
• MCP Server

License

MIT