> For the complete documentation index, see [llms.txt](https://docs.irrevocable.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.irrevocable.dev/quick-start.md).

# Quick Start

## Install the SDK

{% tabs %}
{% tab title="npm" %}

```
# Install via NPM
npm i lit-listener-sdk ethers
```

{% endtab %}

{% tab title="yarn" %}

```
# Install via yarn
yarn add lit-listener-sdk ethers
```

{% endtab %}
{% endtabs %}

<pre class="language-typescript" data-overflow="wrap" data-full-width="true"><code class="lang-typescript">import { ethers, BigNumber } from "ethers";
import { Circuit } from "lit-listener-sdk";

const chronicleProvider = new ethers.providers.JsonRpcProvider("https://chain-rpc.litprotocol.com/http", 175177);
const chronicleSigner = new ethers.Wallet(YOUR_PRIVATE_KEY, chronicleProvider);

const quickStartCircuit = new Circuit(chronicleSigner);
<strong>
</strong><strong>quickStartCircuit.setConditions([
</strong> new ContractCondition(
    "0x6968105460f67c3bf751be7c15f92f5286fd0ce5", // contract address
    [
     {
      "anonymous": false,
      "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "to",
        "type": "address"
       },
       {
        "indexed": false,
        "internalType": "uint256",
        "name": "value",
        "type": "uint256"
        }
          ],
          "name": "Transfer",
          "type": "event"
        },
      ], // abi
      "Transfer", // event name
      CHAIN_NAME.polygon, // chainId
      "https://your_provider_url_for_this_network", // provider URL
      ["to", "value"], // event name args
      ["0x6968105460f67c3bf751be7c15f92f5286fd0ce5",   
<strong>      BigNumber.from("500000")], // expected value
</strong>      "===", // match operator
      async () => { console.log("Matched!"); }, // onMatched function
      async () => { console.log("Unmatched!"); }, // onUnMatched function
      (error: Error) => { console.log("Error:", error); } // onError function,
), ]);
        
const {unsignedTransactionDataObject, litActionCode} = await quickStartCircuit.setActions([{
  type: "contract", 
  priority: 2, 
  contractAddress: "0x6968105460f67c3bf751be7c15f92f5286fd0ce5", 
  abi: [
     {
      constant: true,
      inputs: [{ name: "numberValue", type: "uint256" }],
      name: "your_function_name",
      outputs: [{ name: "", type: "uint256" }],
      payable: false,
      stateMutability: "external",
      type: "function",
      },
  ], 
  functionName: "your_function_name", 
  chainId: "polygon", 
  nonce: 1, 
  gasLimit: 100000,
  value: 0, 
  maxPriorityFeePerGas: 1000, 
  maxFeePerGas: 10000, 
  args: [20], 
};
]);

// Assuming you have already uploaded the Lit Action Code to IPFS and just need to retrieve the hash
const ipfsCID = await quickStartCircuit.getIPFSHash(litActionCode);
const { publicKey, tokenId, address } = await quickStartCircuit.mintGrantBurnPKP(ipfsCID);

await quickStartCircuit.start({publicKey, ipfsCID});
</code></pre>


---

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