Monorail Developer API

For next generation
Monad apps

Quotes, swaps, prices, token and wallet data with enterprise-grade reliability
Powered by Monorail's synthetic orderbooks

See Examples

Free to use • No usage caps • Fee sharing

Orderbooks and AMMs

Supported Exchanges

16 000+

Tokens

Metadata and Balances

Active

Integrators

Average

Daily Requests

174ms

Mean

Response Time

Built for Monad's Builders

Whether you're building bots, managing communities, or creating the next DeFi protocol

Bot Builders

Arbitrage and liquidation bot builders with fast trading strategies

High-frequency • Low latency

Discord Communities

Server owners providing price feeds and trading tools for their communities

Real-time pricing • Easy integration

DeFi Builders

Apps needing pricing data or seamless swap integration for their users

Gasless swaps • Best prices

AMM Protocols

DEXs wanting to improve routing efficiency and earn additional fees

Better routing • Fee sharing

Simple. Powerful. Ready in Minutes.

Get started with just a few lines of code, our API handles the rest

// Define your Monorail app ID
const appId = '0';

// MON
const tokenIn = '0x0000000000000000000000000000000000000000'; 
// USDC
const tokenOut = '0xf817257fed379853cde0fa4f97ab987181b1e5ea'; 

// Set the amount of MON to swap
const amountToSwap = 1.5;

// Construct the quote URL
const quoteUrl = new URL('https://testnet-pathfinder.monorail.xyz/v4/quote');
quoteUrl.searchParams.set('source', appId);
quoteUrl.searchParams.set('from', tokenIn);
quoteUrl.searchParams.set('to', tokenOut);
quoteUrl.searchParams.set('amount', amountToSwap.toString());

// Fetch the quote
const response = await fetch(quoteUrl.toString());
const result = await response.json();

// Output the estimated USDC from the swap
console.log(`USDC from swap: ${result.output_formatted}`);

// Execute result.transaction using your wallet client