> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getpara.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure RPC Nodes with Cosmos Libraries

> Set up and configure Cosmos RPC endpoints and clients using CosmJS

export const Card = ({imgUrl, title, description, href, horizontal = false, newTab = false}) => {
  const [isHovered, setIsHovered] = useState(false);
  const handleClick = e => {
    e.preventDefault();
    if (newTab) {
      window.open(href, '_blank', 'noopener,noreferrer');
    } else {
      window.location.href = href;
    }
  };
  return <div className={`not-prose relative my-2 p-[1px] rounded-xl transition-all duration-300 ${isHovered ? 'bg-gradient-to-r from-[#FF4E00] to-[#874AE3]' : 'bg-gray-200'}`} onMouseEnter={() => setIsHovered(true)} onMouseLeave={() => setIsHovered(false)}>
      <a href={href} onClick={handleClick} className={`not-prose flex ${horizontal ? 'flex-row' : 'flex-col'} font-normal h-full bg-white overflow-hidden w-full cursor-pointer rounded-[11px] no-underline`}>
        {imgUrl && <div className={`relative overflow-hidden flex-shrink-0 ${horizontal ? 'w-[30%] rounded-l-[11px]' : 'w-full'}`} onClick={e => e.stopPropagation()}>
            <img src={imgUrl} alt={title} className="w-full h-full object-cover pointer-events-none select-none" draggable="false" />
            <div className="absolute inset-0 pointer-events-none" />
          </div>}
        <div className={`flex-grow px-6 py-5 ${horizontal ? 'w-[70%]' : 'w-full'} flex flex-col ${horizontal && imgUrl ? 'justify-center' : 'justify-start'}`}>
          {title && <h2 className="font-semibold text-base text-gray-800 m-0">{title}</h2>}
          {description && <div className={`font-normal text-gray-500 re leading-6 ${horizontal || !imgUrl ? 'mt-0' : 'mt-1'}`}>
              <p className="m-0 text-xs">{description}</p>
            </div>}
        </div>
      </a>
    </div>;
};

Learn how to configure custom RPC endpoints for different Cosmos-based chains when using CosmJS with Para.

## Prerequisites

<Card title="Setup CosmJS Libraries" description="Configure CosmJS with Para SDK first" href="/v2/react/guides/web3-operations/cosmos/setup-libraries" icon="gear" horizontal />

## Configure Chain-Specific RPC

```typescript theme={null}
import { useState } from "react";
import { useParaCosmjsProtoSigner } from "@getpara/react-sdk";
import { StargateClient, SigningStargateClient } from "@cosmjs/stargate";

const CHAIN_CONFIGS = {
  cosmos: {
    rpc: "https://rpc.cosmos.directory/cosmoshub",
    chainId: "cosmoshub-4"
  },
  osmosis: {
    rpc: "https://rpc.cosmos.directory/osmosis",
    chainId: "osmosis-1"
  },
  celestia: {
    rpc: "https://celestia-rpc.publicnode.com",
    chainId: "celestia"
  },
  dydx: {
    rpc: "https://dydx-dao-rpc.polkachu.com",
    chainId: "dydx-mainnet-1"
  }
};

function MultiChainExample() {
  const { protoSigner, isLoading } = useParaCosmjsProtoSigner();
  const [heights, setHeights] = useState<Record<string, number>>({});

  const checkChainStatus = async () => {
    const cosmosClient = await StargateClient.connect(CHAIN_CONFIGS.cosmos.rpc);
    const osmosisClient = await StargateClient.connect(CHAIN_CONFIGS.osmosis.rpc);

    const cosmosHeight = await cosmosClient.getHeight();
    const osmosisHeight = await osmosisClient.getHeight();

    setHeights({ cosmos: cosmosHeight, osmosis: osmosisHeight });
    console.log("Cosmos block height:", cosmosHeight);
    console.log("Osmosis block height:", osmosisHeight);
  };

  if (isLoading) return <div>Loading...</div>;

  return (
    <div>
      <button onClick={checkChainStatus}>Check Chain Status</button>
      {Object.entries(heights).map(([chain, height]) => (
        <p key={chain}>{chain}: {height}</p>
      ))}
    </div>
  );
}
```

## Next Steps

<CardGroup cols={3}>
  <Card title="Query Balances" description="Check token balances on configured chains" href="/v2/react/guides/web3-operations/cosmos/query-balances" icon="coins" />

  <Card title="Send Tokens" description="Transfer tokens on different chains" href="/v2/react/guides/web3-operations/cosmos/send-tokens" icon="paper-plane" />

  <Card title="IBC Transfers" description="Transfer tokens between chains" href="/v2/react/guides/web3-operations/cosmos/ibc-transfers" icon="route" />
</CardGroup>