Fix/contract write error (#251)

* move to Record type for writeContract params input to prevent account and chain field overwriting

* change set

* keep old formatting

* restore formatting

Author: dssei

.changeset/dirty-kids-eat.md

@@ -0,0 +1,5 @@
+---
+"@sei-js/mcp-server": patch
+---
+
+Move to Record type for writeContract params arg

packages/mcp-server/src/core/services/contracts.ts

@@ -19,7 +19,7 @@ export async function readContract(params: ReadContractParameters, network = DEF
  * @returns Transaction hash
  * @throws Error if no private key is available
  */
-export async function writeContract(params: WriteContractParameters, network = DEFAULT_NETWORK): Promise<Hash> {
+export async function writeContract(params: Record<string, any>, network = DEFAULT_NETWORK): Promise<Hash> {
 	// Get private key from environment
 	const key = getPrivateKeyAsHex();
 
@@ -28,7 +28,7 @@ export async function writeContract(params: WriteContractParameters, network = D
 	}
 
 	const client = getWalletClient(key, network);
-	return await client.writeContract(params);
+	return await client.writeContract(params as any);
 }
 
 /**

packages/mcp-server/src/core/tools.ts

@@ -797,13 +797,11 @@ export function registerEVMTools(server: McpServer) {
 				// Parse ABI if it's a string
 				const parsedAbi = typeof abi === 'string' ? JSON.parse(abi) : abi;
 
-				const contractParams: WriteContractParameters = {
+				const contractParams: Record<string, any> = {
 					address: contractAddress as Address,
 					abi: parsedAbi,
 					functionName,
-					args,
-					chain: null, // This will use the default chain from the client
-					account: null // This will use the default account from the client
+					args
 				};
 
 				const txHash = await services.writeContract(contractParams, network);

packages/mcp-server/src/tests/core/tools.test.ts

@@ -1968,9 +1968,7 @@ describe('EVM Tools', () => {
           address: writeParams.contractAddress,
           abi: writeParams.abi,
           functionName: writeParams.functionName,
-          args: writeParams.args,
-          chain: null,  // This is added by the implementation
-          account: null // This is added by the implementation
+          args: writeParams.args
         },
         'sei' // DEFAULT_NETWORK
       );