MeshJS

https://meshjs.dev/sdk
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MeshJS is a leading open-source Cardano TypeScript SDK that provides transaction builders, wallet...
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### Install Mesh.js SDK

Source: https://meshjs.dev

Install the Mesh.js SDK using npm. This is the first step to start building your dApp.

```bash
npm i @meshsdk/core
```

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### Install Mesh Agent Skills

Source: https://meshjs.dev

Use the CLI to add Mesh SDK knowledge to AI coding assistants.

```bash
  # Install all Mesh skills
  npx skills add MeshJS/skills

  # Install for a specific agent
  npx skills add MeshJS/skills -a claude-code
  npx skills add MeshJS/skills -a cursor
  npx skills add MeshJS/skills -a codex
```

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### Initialize MeshWallet

Source: https://meshjs.dev

Create a server-side wallet instance using a mnemonic phrase for backend operations.

```typescript
  import { MeshWallet } from '@meshsdk/core';

  const wallet = new MeshWallet({
    networkId: 0, // 0: testnet, 1: mainnet
    fetcher: provider,
    submitter: provider,
    key: {
      type: 'mnemonic',
      words: ["solution","solution",...,"solution"],
    },
  });
```

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### Integrate CardanoWallet Component

Source: https://meshjs.dev

Add a pre-built wallet connection button to React applications.

```tsx
  import { CardanoWallet } from '@meshsdk/react';

  export default function Page() {
    return (
      <>
        <CardanoWallet
          label={"Connect a Wallet"}
          persist={true}
          onConnected={()=>{console.log('on connected')}}
        />
      </>
    );
  }
```

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### Build Transactions with MeshTxBuilder

Source: https://meshjs.dev

Construct Cardano transactions using a chainable API with automatic UTXO selection and fee calculation.

```typescript
  import { MeshTxBuilder } from '@meshsdk/transaction';

  const txBuilder = new MeshTxBuilder();

  const unsignedTx = await txBuilder
    .txIn(txHash, txIndex)
    .txOut(recipientAddress, [
      { unit: 'lovelace', quantity: '5000000' },
    ])
    .changeAddress(senderAddress)
    .selectUtxosFrom(utxos)
    .complete();
```
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