Archway TypeScript SDK - Bolt Liquidity Documentation

A type-safe CosmWasm client for interacting with Bolt’s zero slippage execution layer on Archway. Query oracle prices, inspect pool state, simulate swaps off-chain, and execute trades programmatically.

Quickstart

Prerequisites

Before using the SDK, make sure you have:

Node.js 18+ installed
An Archway-compatible wallet (Keplr, Leap, etc.) for signing transactions
Access to Archway RPC endpoints (the client uses https://rpc.mainnet.archway.io for mainnet and https://rpc.constantine.archway.io for testnet by default)

Installation

NPM
YARN
PNPM

npm install @bolt-liquidity-hq/cosmwasm-client

yarn add @bolt-liquidity-hq/cosmwasm-client

pnpm add @bolt-liquidity-hq/cosmwasm-client

Initialize the Bolt client

The SDK supports different environments:

type Environment = 'mainnet' | 'testnet';

Mainnet
Testnet

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

const client = new BoltCosmWasmClient();

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

const client = new BoltCosmWasmClient({
  environment: 'testnet',
});

Query all assets

// Get all supported assets
const assets = await client.getAssets();
assets.forEach((asset) => {
  console.log(`${asset.symbol} (${asset.name}): ${asset.denom}`);
  console.log(`  Decimals: ${asset.decimals}`);
});

// Find a specific asset
const archAsset = assets.find((a) => a.symbol === 'ARCH');
console.log(`ARCH denom: ${archAsset?.denom}`); // "aarch"

Execute a swap

import { DirectSecp256k1HdWallet } from '@cosmjs/proto-signing';

// Get signer from wallet (implementation depends on wallet)
const signer = await DirectSecp256k1HdWallet.fromMnemonic("my mnemonic goes here", {
  prefix: 'archway',
});

// Execute a swap: exactly 1 ARCH for USDC
const result = await client.swap({
  assetIn: 'aarch',
  amountIn: '1000000000000000000', // 1 ARCH (18 decimals)
  assetOut: 'ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D', // USDC
  minimumAmountOut: '1900000', // Minimum 1.9 USDC (6 decimals)
}, signer);

console.log(`Swapped 1 ARCH for ${result.amountOut} USDC`);
console.log(`Transaction hash: ${result.txHash}`);
console.log(`Gas cost: ${result.txOutput.gasUsed}`);
console.log(`Status: ${result.txOutput.code === 0 ? 'success' : 'failed'}`);

API

Client initialization

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

// Initialise client
const client = new BoltCosmWasmClient({
  environment: 'mainnet', // 'testnet' | 'mainnet'
  customOverride: {
    chainConfig: {
      rpcEndpoint: 'https://my-custom-rpc-endpoint...', // Remove this if you want to use the default public RPC endpoint
    }
  }
});

Advanced client initialization

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

// Initialise client with full custom configuration
const customClient = new BoltCosmWasmClient({
  customOverride: {
    chainConfig: {
      id: 'archway-custom-1',
      name: 'Archway Custom',
      rpcEndpoint: 'https://custom-rpc.example.com',
      restEndpoint: 'https://custom-rest.example.com'
    },
    contracts: {
      oracle: 'archway1custom_oracle...',
      router: 'archway1custom_router...'
    },
    nativeTokenDenom: 'aarch',
    assetsConfig: {
      'aarch': {
        symbol: 'ARCH',
        name: 'Archway',
        chainId: 'archway-custom-1',
        denom: 'aarch',
        decimals: 18,
        logo: 'https://example.com/arch.png',
        coingeckoId: 'archway'
      }
    }
  }
});

Environment configuration

Parameter	Type	Default	Description
environment	`mainnet` \| `testnet`	`mainnet`	Network to connect to

Override chain configuration

Parameter	Type	Default (mainnet)	Default (testnet)	Description
chainConfig.id	string	archway-1	constantine-3	Chain identifier
chainConfig.name	string	Archway	Archway Testnet	Human-readable chain name
chainConfig.rpcEndpoint	string	https://rpc.mainnet.archway.io/	https://rpc.constantine.archway.io/	RPC endpoint URL
chainConfig.restEndpoint	string	https://api.mainnet.archway.io/	https://api.constantine.archway.io/	REST endpoint URL

Override Outpost contract addresses

Parameter	Type	Description
contracts.oracle	string	Oracle contract address
contracts.router	string	Router contract address

Override native token denomination

Parameter	Type	Description
nativeTokenDenom	string	Native token denomination (default: `aarch`)

Override assets configuration

Parameter	Type	Description
assetsConfig	`Record<string, Asset>`	Custom asset configurations indexed by denomination

type Asset = {
  symbol: string;        // Asset symbol (e.g., 'ARCH', 'USDC')
  name: string;          // Full asset name (e.g., 'Archway', 'Circle USDC')
  chainId: string;       // Chain identifier
  denom: string;         // Asset denomination
  decimals: number;      // Number of decimal places
  logo?: string;         // Optional logo URL
  coingeckoId?: string;  // Optional CoinGecko identifier
};

Override clients

Parameter	Type	Description
cosmWasmClient	`CosmWasmClient` \| `ArchwayClient`	Pre-existing query client instance for blockchain interactions
signer	`OfflineSigner`	Pre-existing signer
signingCosmWasmClient	`SigningCosmWasmClient` \| `SigningArchwayClient`	Pre-existing signing client instance for signing blockchain transactions

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';
import { CosmWasmClient } from '@cosmjs/cosmwasm-stargate';

// Create custom CosmWasm client with specific configuration
const customCosmWasmClient = CosmWasmClient.connect('https://custom-rpc.example.com');

const client = new BoltCosmWasmClient({
  cosmWasmClient: customCosmWasmClient
});

Get oracle config

getOracleConfig() retrieves the current configuration settings from the Bolt Oracle smart contract on Archway. This configuration governs how price feeds are managed, including update thresholds, expiration times, and administrative settings.

Method Signature
Returns

async getOracleConfig(): Promise<OracleConfig>

type OracleConfig = {
  admin: Address;                    // Archway address authorised to update oracle settings and prices
  priceThresholdRatio: string;       // Minimum price change ratio required for updates (decimal string)
  priceExpireTime: Duration | null;  // Time duration before prices become stale
};

type Duration = {
  secs: number;   // Seconds component
  nanos: number;  // Nanoseconds component (always 0 in current implementation)
};

Usage example

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

const client = new BoltCosmWasmClient();

const config = await client.getOracleConfig();

console.log('Oracle Admin:', config.admin);
console.log('Price Threshold:', config.priceThresholdRatio);
console.log('Price Expiry (seconds):', config.priceExpireTime?.secs);

How to cache Oracle config (best practice)

// Cache configuration for performance
let cachedConfig: OracleConfig | null = null;
let lastFetchTime = 0;
const CACHE_DURATION = 5 * 60 * 1000; // 5 minutes

async function getCachedOracleConfig() {
  const now = Date.now();

  if (cachedConfig && (now - lastFetchTime) < CACHE_DURATION) {
    return cachedConfig;
  }

  cachedConfig = await client.getOracleConfig();
  lastFetchTime = now;
  return cachedConfig;
}

How to monitor for price updates

async function monitorOracleConfig() {
  const config = await client.getOracleConfig();

  setInterval(async () => {
    const newConfig = await client.getOracleConfig();

    if (newConfig.priceThresholdRatio !== config.priceThresholdRatio) {
      console.log('Price threshold changed:', newConfig.priceThresholdRatio);
    }

    if (newConfig.priceExpireTime?.secs !== config.priceExpireTime?.secs) {
      console.log('Price expiry time changed:', newConfig.priceExpireTime?.secs);
    }
  }, 60000); // Check every minute
}

Query prices and assets

getAssets() retrieves all unique assets available in the Bolt execution layer by querying oracle asset pairs and enriching them with additional metadata from the client’s asset configuration.

Method Signature
Returns

async getAssets(): Promise<Asset[]>

type Asset = {
  symbol: string;        // Trading symbol (e.g., "ARCH", "USDC")
  name: string;          // Full asset name (e.g., "Archway", "USD Coin")
  chainId: string;       // Blockchain network identifier
  denom: string;         // Chain-specific denomination
  decimals: number;      // Number of decimal places
  logo?: string;         // Optional logo URL
  coingeckoId?: string;  // Optional CoinGecko identifier
};

Usage example

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

const client = new BoltCosmWasmClient();

const assets = await client.getAssets();

console.log('Available assets:', assets.length);
assets.forEach(asset => {
  console.log(`${asset.symbol}: ${asset.name} (${asset.decimals} decimals)`);
});

// Find a specific asset
const archAsset = assets.find((a) => a.symbol === 'ARCH');
console.log(`ARCH denom: ${archAsset?.denom}`); // "aarch"

getAllOracleAssetPairs() queries the oracle smart contract to retrieve all supported asset pairs with automatic pagination. Each asset pair represents a base/quote relationship that can be used for price queries and swaps.

Method Signature
Returns

async getAllOracleAssetPairs(): Promise<OracleAssetPair[]>

type OracleAssetPair = {
  base: OracleAsset;   // Base asset information
  quote: OracleAsset;  // Quote asset information
};

type OracleAsset = {
  name: string;      // Asset name (currently same as symbol)
  symbol: string;    // Trading symbol (e.g., "ARCH", "ATOM")
  precision: number; // Number of decimal places
};

Usage example

const assetPairs = await client.getAllOracleAssetPairs();

console.log('Supported trading pairs:', assetPairs.length);
assetPairs.forEach(pair => {
  console.log(`${pair.base.symbol}/${pair.quote.symbol} (${pair.base.precision}/${pair.quote.precision} decimals)`);
});

getAllPrices() queries the oracle smart contract to retrieve all available price feeds with automatic pagination. More efficient than making multiple individual price queries when you need prices for multiple pairs.

Method Signature
Returns

async getAllPrices(): Promise<Price[]>

type Price = {
  assetPair: string;    // Currently empty string due to contract limitations
  price: string;        // Current price as decimal string
  expiryTime: string;   // Unix timestamp in nanoseconds when price expires
};

Usage example

const allPrices = await client.getAllPrices();

console.log('Total prices available:', allPrices.length);
allPrices.forEach(price => {
  console.log(`Price: ${price.price}, Expires: ${new Date(Number(price.expiryTime) / 1000000)}`);
});

getPrice() queries the oracle smart contract to retrieve the current price for a specific asset pair. Fetches the latest price feed that is updated by authorized price feeders and validated against configured thresholds.

Method Signature
Returns

async getPrice(baseDenom: string, quoteDenom: string): Promise<InvertiblePrice>

type InvertiblePrice = {
  assetPair: string;    // Trading pair in format "baseDenom:quoteDenom"
  price: string;        // Current price as decimal string
  expiryTime: string;   // Unix timestamp in nanoseconds when price expires
  isInverse: boolean;   // Always false in current implementation
};

Usage example

// Get ARCH/USDC price
const price = await client.getPrice(
  'aarch',
  'ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D' // USDC
);

console.log(`ARCH/USDC Price: ${price.price}`);
console.log(`Expires at: ${new Date(Number(price.expiryTime) / 1000000)}`);
console.log(`Asset Pair: ${price.assetPair}`);

Verify pool liquidity

getPoolBaseLiquidity() queries the router smart contract to retrieve the total base asset liquidity for a specific pool. Fetches current liquidity levels for the base asset in the specified pool.

Method Signature
Returns

async getPoolBaseLiquidity(poolContractAddress: string): Promise<BaseLiquidityDetails>

type BaseLiquidityDetails = {
  baseLiquidity: Coin;  // Base asset liquidity information
  totalShares: string;  // Total liquidity shares
};

type Coin = {
  amount: string; // Quantity of base asset liquidity
  denom: string;  // Type of the base asset
};

Usage example

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

const client = new BoltCosmWasmClient();

const poolAddress = "archway1f1e...";
const liquidity = await client.getPoolBaseLiquidity(poolAddress);

console.log(`Base liquidity: ${liquidity.baseLiquidity.amount} ${liquidity.baseLiquidity.denom}`);
console.log(`Total shares: ${liquidity.totalShares}`);

getAllBaseAssetsLiquidity() queries the router smart contract to retrieve the base asset liquidity across all pools. Fetches current liquidity levels for all the base assets in their respective pools.

Method Signature
Returns

async getAllBaseAssetsLiquidity(): Promise<Record<Address, BaseLiquidityDetails>>

type BaseLiquidityDetails = {
  baseLiquidity: Coin;  // Base asset liquidity information
  totalShares: string;  // Total liquidity shares
};

type Coin = {
  amount: string; // Quantity of base asset liquidity
  denom: string;  // Type of the base asset
};

Usage example

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';

const client = new BoltCosmWasmClient();

const liquidity = await client.getAllBaseAssetsLiquidity();

console.log('Base asset liquidity:', Object.keys(liquidity).length);
Object.entries(liquidity).forEach(([denom, details]) => {
  console.log(`${denom}: ${details.baseLiquidity.amount} (${details.totalShares} shares)`);
});

Get Router contract config

getRouterConfig() queries the router smart contract to retrieve its current configuration settings. The Router is the entry-point contract unique to the Archway deployment that governs how swaps are executed, fees are collected, and new pools are deployed.

Method Signature
Returns

async getRouterConfig(): Promise<RouterConfig>

type RouterConfig = {
  admin: string;                      // Address with administrative privileges
  defaultPriceOracleContract: string;  // Default price oracle contract address
  defaultProtocolFeeRecipient: string; // Address that receives protocol fees
  defaultProtocolFee: string;          // Protocol fee percentage (e.g., "0.003" = 0.3%)
  defaultLpFee: string;               // LP fee percentage (e.g., "0.002" = 0.2%)
};

Usage example

const config = await client.getRouterConfig();

console.log('Router Admin:', config.admin);
console.log('Price Oracle:', config.defaultPriceOracleContract);
console.log('Protocol Fee Recipient:', config.defaultProtocolFeeRecipient);
console.log('Protocol Fee:', config.defaultProtocolFee);
console.log('LP Fee:', config.defaultLpFee);

Get liquidity pools information

getAllPools() queries the router smart contract to retrieve information about all deployed pools with automatic pagination. Fetches a comprehensive list of all pools in the Bolt execution layer on Archway.

Method Signature
Returns

async getAllPools(): Promise<Pool[]>

type Pool = {
  poolAddress: string;   // Contract address of the pool
  baseDenom: string;     // Type of the base asset
  quoteDenoms: string[]; // Array of available quote asset types
};

Usage example

const allPools = await client.getAllPools();

console.log(`Total pools available: ${allPools.length}`);

// Display all pools and their trading pairs
allPools.forEach((pool, index) => {
  console.log(`\nPool ${index + 1}: ${pool.poolAddress}`);
  console.log(`  Base asset: ${pool.baseDenom}`);
  console.log(`  Quote assets: ${pool.quoteDenoms.length}`);
  pool.quoteDenoms.forEach(quote => {
    console.log(`    - ${quote}`);
  });
});

// Find pools for specific base asset
const archPools = allPools.filter(pool =>
  pool.baseDenom === "aarch"
);
console.log(`ARCH pools found: ${archPools.length}`);

getPoolConfig() retrieves the configuration settings of a liquidity pool contract. Queries the contract to fetch its current configuration parameters, including fees, LP settings, and oracle integration.

Method Signature
Returns

async getPoolConfig(contractAddress: Address): Promise<PoolConfig>

type PoolConfig = {
  priceOracleContract: string;  // Price oracle contract used by this pool
  protocolFeeRecipient: string; // Address that receives protocol fees
  protocolFee: string;          // Protocol fee percentage (e.g., "0.003" = 0.3%)
  lpFee: string;                // LP fee percentage (e.g., "0.002" = 0.2%)
  allowanceMode: string;        // Allowance mode for pool operations
  lps: string[];                // Array of authorised LP addresses
  minBaseOut: string;           // Minimum base asset output amount for trades
};

Usage example

const poolAddress = "archway1f1e...";
const config = await client.getPoolConfig(poolAddress);

console.log('Pool Configuration:');
console.log('  Price Oracle:', config.priceOracleContract);
console.log('  Protocol Fee:', config.protocolFee);
console.log('  LP Fee:', config.lpFee);
console.log('  Allowance Mode:', config.allowanceMode);
console.log('  Min Base Out:', config.minBaseOut);

getPoolByDenom() queries the router smart contract to retrieve pool information for a specific base asset on Archway. Fetches pool details for the pool matching the provided asset denomination.

Method Signature
Returns

async getPoolByDenom(baseDenom: string): Promise<Pool>

type Pool = {
  poolAddress: string;   // Contract address of the pool
  baseDenom: string;     // Type of the base asset
  quoteDenoms: string[]; // Array of available quote asset types
};

Usage example

// Get pool for ATOM base asset
const pool = await client.getPoolByDenom('ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2');

console.log('Pool Address:', pool.poolAddress);
console.log('Base Asset:', pool.baseDenom);
console.log('Quote Assets:', pool.quoteDenoms.length);
pool.quoteDenoms.forEach(quote => {
  console.log(`  - ${quote}`);
});

getPoolConfigByDenom() retrieves pool configuration by base asset denomination. This is a convenience function that combines pool lookup and configuration retrieval.

Method Signature
Returns

async getPoolConfigByDenom(baseDenom: string): Promise<PoolConfig>

type PoolConfig = {
  priceOracleContract: string;  // Price oracle contract used by this pool
  protocolFeeRecipient: string; // Address that receives protocol fees
  protocolFee: string;          // Protocol fee percentage (e.g., "0.003" = 0.3%)
  lpFee: string;                // LP fee percentage (e.g., "0.002" = 0.2%)
  allowanceMode: string;        // Allowance mode for pool operations
  lps: string[];                // Array of authorised LP addresses
  minBaseOut: string;           // Minimum base asset output amount for trades
};

Usage example

// Get pool configuration for ATOM base asset
const config = await client.getPoolConfigByDenom('ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2');

console.log('Price Oracle:', config.priceOracleContract);
console.log('Protocol Fee Recipient:', config.protocolFeeRecipient);
console.log('Protocol Fee:', config.protocolFee);
console.log('LP Fee:', config.lpFee);
console.log('Allowance Mode:', config.allowanceMode);
console.log('Authorized LPs:', config.lps.length);
console.log('Min Base Out:', config.minBaseOut);

Simulate a swap

simulateSwap() simulates a swap operation to calculate the expected output amount without executing the transaction. Performs a dry run that takes into account current pool conditions, oracle prices, and fees. Use this for accurate estimates before executing.

Method Signature
Returns

async simulateSwap(params: SwapParams): Promise<SimulateSwapResult>

type SimulateSwapResult = {
  poolAddress: string;           // Contract address of the pool
  amountOut: string;             // Amount expected to be received after the swap
  assetOut: string;              // Denom of the asset that will be received
  protocolFee: string;           // Protocol fee amount that would be charged
  lpFee: string;                 // LP fee amount that would be charged
  dynamicFeePercentage?: string; // Percentage going to dynamic fees
  totalFees: string;             // Sum of protocolFee and lpFee (dynamic fee distributed between both)
};

Usage example

// Simulate swapping 1 ARCH for USDC
const simulation = await client.simulateSwap({
  assetIn: "aarch",
  amountIn: "1000000000000000000", // 1 ARCH (18 decimals)
  assetOut: "ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D" // USDC
});

console.log(`Pool: ${simulation.poolAddress}`);
console.log(`Expected output: ${simulation.amountOut} ${simulation.assetOut}`);
console.log(`Protocol fee: ${simulation.protocolFee}`);
console.log(`LP fee: ${simulation.lpFee}`);
if (simulation.dynamicFeePercentage) {
  console.log(`Dynamic fee: ${simulation.dynamicFeePercentage}`);
}
console.log(`Total fees: ${simulation.totalFees}`);

Execute a swap

swap() executes a token swap transaction on the Bolt execution layer through the router contract. It performs a “swap exact in” operation where you specify exactly how much of the input asset to swap, and receive a variable amount of the output asset based on current pool conditions.

Method Signature
Returns

async swap(params: SwapParams, signer: Signer): Promise<SwapResult<ExecuteResult>>

type SwapParams = {
  assetIn: string;           // Denomination of the asset being sold
  amountIn: string;          // Exact amount of input asset to swap (in minimal units)
  assetOut: string;          // Denomination of the asset being bought
  minimumAmountOut?: string; // Optional minimum acceptable amount of output asset
  receiver?: Address;        // Optional recipient address for swapped assets
};

type SwapResult<ExecuteResult> = {
  txOutput: ExecuteResult; // Complete transaction response
  amountOut: string;       // Actual amount of output asset received
  assetOut: string;        // Output asset denomination
  txHash: string;          // Transaction hash for tracking
};

Usage examples

Simple swap

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';
import { OfflineSigner } from '@cosmjs/proto-signing';

const client = new BoltCosmWasmClient();

const signer: OfflineSigner = // ... obtain signer from wallet or mnemonic

try {
  const result = await client.swap({
    assetIn: "aarch",
    amountIn: "1000000000000000000", // 1 ARCH (18 decimals)
    assetOut: "ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D", // USDC IBC denom
    minimumAmountOut: '1900000', // Minimum 1.9 USDC (6 decimals)
    receiver: "archway1..." // Optional custom receiver
  }, signer);

  console.log('Swap successful!');
  console.log(`Transaction hash: ${result.txHash}`);
  console.log(`Received: ${result.amountOut} ${result.assetOut}`);
} catch (error) {
  console.error('Swap failed:', error.message);
}

Swap with minimum amount out limit

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';
import { OfflineSigner } from '@cosmjs/proto-signing';

const client = new BoltCosmWasmClient();

const signer: OfflineSigner = // ... obtain signer from wallet or mnemonic

const minimumAmountOut = "1900000"; // Minimum 1.9 USDC (6 decimals)

try {
  const result = await client.swap({
    assetIn: "aarch",
    amountIn: "1000000000000000000", // 1 ARCH (18 decimals)
    assetOut: "ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D", // USDC IBC denom
    minimumAmountOut
  }, signer);

  console.log(`Minimum: ${minimumAmountOut} USDC`);
  console.log(`Received: ${result.amountOut} USDC`);
} catch (error) {
  console.error('Swap failed:', error.message);
}

Swap with custom receiver

import { BoltCosmWasmClient } from '@bolt-liquidity-hq/cosmwasm-client';
import { OfflineSigner } from '@cosmjs/proto-signing';

const client = new BoltCosmWasmClient();

const signer: OfflineSigner = // ... obtain signer from wallet or mnemonic

const receiver = "archway1e1f1..."; // Custom recipient

try {
  const result = await client.swap({
    assetIn: "aarch",
    amountIn: "1000000000000000000", // 1 ARCH (18 decimals)
    assetOut: "ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D", // USDC IBC denom
    receiver
  }, signer);

  console.log('Swap successful!');
  console.log(`Transaction hash: ${result.txHash}`);
  console.log(`Sent: ${result.amountOut} ${result.assetOut} to ${receiver}`);
} catch (error) {
  console.error('Swap failed:', error.message);
}

Best practices

Price slippage protection

// Always set minimumAmountOut to protect against price variations
const calculateMinimumOutput = (
  amountIn: string,
  price: string,
  priceSlippageTolerance: number = 0.01
) => {
  const expectedOutput = BigNumber(amountIn).multipliedBy(price);

  const slippageMultiplier = new BigNumber(1).minus(priceSlippageTolerance);

  return expectedOutput
    .multipliedBy(slippageMultiplier)
    .toFixed(0, BigNumber.ROUND_DOWN); // return as integer string
};

const price = await client.getPrice(assetIn, assetOut);
const minimumAmountOut = calculateMinimumOutput(amountIn, price.price, 0.01); // 1% slippage

const result = await client.swap({
  assetIn,
  amountIn,
  assetOut,
  minimumAmountOut
}, signer);

Error handling and retries

async function robustSwap(signer: Signer, params: SwapParams, maxRetries: number = 3) {
  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    try {
      console.log(`Swap attempt ${attempt}/${maxRetries}`);

      const result = await client.swap(params, signer);

      console.log(`Swap successful on attempt ${attempt}`);
      return result;

    } catch (error) {
      console.error(`Attempt ${attempt} failed:`, error.message);

      if (attempt === maxRetries) {
        throw new Error(`Swap failed after ${maxRetries} attempts: ${error.message}`);
      }

      // Wait before retry (exponential backoff)
      const delay = Math.pow(2, attempt) * 1000;
      console.log(`Waiting ${delay}ms before retry...`);
      await new Promise(resolve => setTimeout(resolve, delay));
    }
  }
}

Gas estimation and optimization

import { OfflineSigner } from '@cosmjs/proto-signing';

const signer: OfflineSigner = // ... obtain signer from wallet or mnemonic
const result = await client.estimateSwapGasFees(
  {
    assetIn: "aarch",
    amountIn: "1000000000000000000", // 1 ARCH (18 decimals)
    assetOut: "ibc/43897B9739BD63E3A08A88191999C632E052724AB96BD4C74AE31375C991F48D", // USDC IBC denom
  },
  signer
);

if (result.amount > maxGasBudget) {
  throw new Error('Gas cost exceeds budget');
}

Error handling

Error	Cause	Fix
NotFoundError	Asset, pool, or oracle not found	Verify denoms and pool addresses
InvalidParameterError	Bad address or negative amount	Validate inputs before calling
InvalidObjectError	Object does not exist on-chain	Confirm addresses and network
InvalidTypeError	Type mismatch in params	Ensure denoms and amounts are strings
MissingParameterError	Required field omitted	Provide all non-optional fields
TransactionFailedError	On-chain execution failed	Check gas, inventory, oracle freshness
ParseError	Failed to deserialise data	Retry or switch RPC endpoint

Archway Outpost Addresses

Contract addresses for mainnet and testnet.

Contract Math

Understand the pricing formula behind simulateSwap().

Pool State Indexing

Index pool state for real-time integration.

Contact The Team

Questions about routing, integration, or execution strategy? Reach out.

​Quickstart

​API

​Client initialization

​Get oracle config

​Query prices and assets

​Verify pool liquidity

​Get Router contract config

​Get liquidity pools information

​Simulate a swap

​Execute a swap

​Best practices

​Error handling

Error

Cause

Fix

Archway Outpost Addresses

Contract Math

Pool State Indexing

Contact The Team

Quickstart

API

Client initialization

Get oracle config

Query prices and assets

Verify pool liquidity

Get Router contract config

Get liquidity pools information

Simulate a swap

Execute a swap

Best practices

Error handling