added 2by2 multisig proposal approval

src/langchain/index.ts

@@ -2266,6 +2266,40 @@ export class SolanaCreateProposal2by2Multisig extends Tool {
   }
 }
 
+export class SolanaApproveProposal2by2Multisig extends Tool {
+  name = "approve_proposal_2by2_multisig";
+  description = `Approve a proposal to transfer funds from a 2-of-2 multisig account on Solana.
+
+  Inputs (JSON string):
+  - proposalIndex: number, the index of the proposal (required).`;
+
+  constructor(private solanaKit: SolanaAgentKit) {
+    super();
+  }
+
+  protected async _call(input: string): Promise<string> {
+    try {
+      const inputFormat = JSON.parse(input);
+      const proposalIndex = inputFormat.proposalIndex;
+
+      const tx = await this.solanaKit.approveMultisigProposal(proposalIndex);
+
+      return JSON.stringify({
+        status: "success",
+        message: "Proposal approved successfully",
+        transaction: tx,
+        proposalIndex: proposalIndex.toString(),
+      });
+    } catch (error: any) {
+      return JSON.stringify({
+        status: "error",
+        message: error.message,
+        code: error.code || "APPROVE_PROPOSAL_2BY2_MULTISIG_ERROR",
+      });
+    }
+  }
+}
+
 export function createSolanaTools(solanaKit: SolanaAgentKit) {
   return [
     new SolanaBalanceTool(solanaKit),
@@ -2324,5 +2358,6 @@ export function createSolanaTools(solanaKit: SolanaAgentKit) {
     new SolanaDepositTo2by2Multisig(solanaKit),
     new SolanaTransferFrom2by2Multisig(solanaKit),
     new SolanaCreateProposal2by2Multisig(solanaKit),
+    new SolanaApproveProposal2by2Multisig(solanaKit),
   ];
 }