@cryptech/cosmos-client

Cosmos Client

Installation

npm install @cryptech/cosmos-client

Usage

import { CosmosClient } from "@cryptech/cosmos-client";

const client = await CosmosClient.new({
  mnemonic: "your mnemonic",
  chainId: "your chain id",
});

// Get account info
const account = await client.getAccount("your account address");

// Simulate a transaction to get gas estimate as StdFee
const stdFee = await client.simulateFees(messagesAsEncodeObject);

// Smart contract query
const response = await client.query("your smart contract address", {
  // query payload
});

// Smart contract transaction
const txHash = await client.tx("your smart contract address", {
  // tx payload
});

/**
 * Messages As EncodeObject
 * 
 *
 * The messagesAsEncodeObject is an array of objects that contain the following properties:
 * source: import { EncodeObject } from "@cosmjs/proto-signing";
 *

  {
    typeUrl: string;
    value: any;
  }

 *
 * Example for a Smart Contract Execute Message (Using cosmjs-types/cosmwasm/wasm/v1/tx.proto)
 *

 {
   typeUrl: "/cosmwasm.wasm.v1.MsgExecuteContract",
   value: MsgExecuteContract.fromPartial({
     sender: this.sender,
     contract: this.contractAddress,
     msg: toUtf8(JSON.stringify({
       my_tx_message: {
         tx_props1,
         tx_props2
       }
     })),
     funds: [{
       denom: "uatom",
       amount: "1000000"
     }]
   })
 }

 */

// Sign and broadcast any messages in the same transaction
const response = await client.signAndBroadcast(messagesAsEncodeObject, "your optional memo", "your optional fee");

// Sign transaction and return a TxRaw object
const signedTx = await client.sign(messagesAsEncodeObject, "your optional memo", "your optional fee");

// Broadcast a signed TxRaw object
const response = await client.broadcast(signedTx);

By default, Cosmos Client will try to find the required chain info from the chain-registry. If you want to use a custom chain, you can pass the more options to the CosmosClient.new function.

client = await CosmosClient.new({
  chainId: process.env.CHAIN_ID,
  mnemonic: process.env.MNEMONIC,
  walletPrefix: process.env.WALLET_PREFIX,
  rpcEndpoint: process.env.RPC,
  gasPrice: process.env.GAS_PRICE,
  gasAdjustment: process.env.GAS_ADJUSTMENT,
  gasDenom: process.env.DENOM,
  coinType: process.env.COIN_TYPE,
  granter: process.env.GRANTER,
});