MCP Crypto Wallet EVM

Instructions

Implementation Reference

• src/handlers/wallet.ts:61-79 (handler)

  The core handler function that implements the wallet_from_private_key tool logic using ethers.Wallet.

  export const fromPrivateKeyHandler = async (input: fromPrivateKeyHandlerInput): Promise<ToolResultSchema> => {
    try {
      if (!input.privateKey) {
        return createErrorResponse("Private key is required");
      }
  
      const provider = getProvider()
      const wallet = new ethers.Wallet(input.privateKey, provider);
  
      return createSuccessResponse(
      `Wallet created from private key successfully:
        Address: ${wallet.address}
        Private Key: ${wallet.privateKey}
        Public Key: ${wallet.publicKey}
      `);
    } catch (error) {
      return createErrorResponse(`Failed to create wallet from private key: ${(error as Error).message}`);
    }
  };

• src/tools.ts:65-75 (schema)

  MCP tool schema definition with input validation for the privateKey parameter.

  {
    name: "wallet_from_private_key",
    description: "Create a wallet from a private key",
    inputSchema: {
      type: "object",
      properties: {
        privateKey: { type: "string", description: "The private key" }
      },
      required: ["privateKey"]
    }
  },

• src/tools.ts:561-561 (registration)

  Registration of the tool name to its handler function in the handlers dictionary.

  "wallet_from_private_key": fromPrivateKeyHandler,

• src/handlers/wallet.types.ts:1-4 (schema)

  TypeScript type definition for the input parameters used in the handler.

  export type fromPrivateKeyHandlerInput = {
    privateKey: string;
    provider?: string;
  };