diff --git a/API_DOC.md b/API_DOC.md
index 92e64b5..cd6d9f9 100644
--- a/API_DOC.md
+++ b/API_DOC.md
@@ -111,18 +111,20 @@ Also Support camelCase.
 
 Get transactions list and paginate it.
 
-> GET /api/transactions
+> GET /api/v2/transactions
 
 #### params
 
+Also Support camelCase.
+
 ```ruby
 {
   "account":  "the addr transactions related to (from or to)", # hash string
   "from":  "the addr transactions from", # hash string
   "to":  "the addr transactions to", # hash string
-  "valueFormat": "decimal", # set value to decimal number, default hex number
+  "value_format": "decimal", # set value to decimal number, default hex number
   "page": "1", # integer, default 1
-  "perPage": "10", # integer, default 10
+  "per_page": "10", # integer, default 10
   # offset and limit has lower priority than page and perPage
   "offset":  "1", # integer, default to 0
   "limit":  "10", # integer, default to 10
diff --git a/app/controllers/api/v2/transactions_controller.rb b/app/controllers/api/v2/transactions_controller.rb
new file mode 100644
index 0000000..11ce4b6
--- /dev/null
+++ b/app/controllers/api/v2/transactions_controller.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+class Api::V2::TransactionsController < ApplicationController
+  # params:
+  # {
+  #   "account":  "the addr transactions related to", // hash
+  #   "from":  "the addr transactions from", // hash
+  #   "to":  "the addr transactions to", // hash
+  #   "page": "1", // default 1
+  #   "per_page": "10", // default 10
+  #   "value_format": "decimal", // set value to decimal number, default hex number
+  #
+  #   # offset and limit has lower priority than page and perPage
+  #   "offset":  "1", // default to 0
+  #   "limit":  "10", // default to 10
+  # }
+  #
+  # GET /api/v2/transactions
+  def index
+    params.transform_keys!(&:underscore)
+
+    # use ILIKE to ignore case
+    options = {
+      from_or_to_matches: params[:account],
+      from_matches: params[:from],
+      to_matches: params[:to]
+    }
+
+    # FIXME: should order by block_number and index desc, change block_number to integer
+    transactions = Transaction.ransack(options).result.order(updated_at: :desc)
+
+    if params[:page].nil? && (params[:offset].present? || params[:limit].present?)
+      offset = params[:offset] || 0
+      limit = params[:limit] || 10
+      transactions = transactions.offset(offset).limit(limit)
+    else
+      transactions = transactions.page(params[:page]).per(params[:per_page])
+    end
+
+    # TODO: provide V2 api to set default value decimal
+    decimal_value = params[:value_format] == "decimal"
+
+    render json: {
+      result: {
+        transactions: ActiveModelSerializers::SerializableResource.new(transactions, each_serializer: ::Api::TransactionSerializer, decimal_value: decimal_value)
+      }
+    }
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index 7c691b9..785a3e9 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -21,6 +21,7 @@
 
     namespace :v2 do
       resources :blocks, only: [:index]
+      resources :transactions, only: [:index]
     end
   end
 
diff --git a/spec/controllers/api/v2/transactions_controller_spec.rb b/spec/controllers/api/v2/transactions_controller_spec.rb
new file mode 100644
index 0000000..11f38b0
--- /dev/null
+++ b/spec/controllers/api/v2/transactions_controller_spec.rb
@@ -0,0 +1,117 @@
+require 'rails_helper'
+
+def random(num)
+  "0x" + SecureRandom.hex(num)
+end
+
+RSpec.describe Api::V2::TransactionsController, type: :controller do
+  let(:from) { random(20) }
+  let(:to) { random(20) }
+
+  let(:body) { Oj.load(response.body).with_indifferent_access }
+  let(:result) { body[:result] }
+  let(:count) { result[:transactions].size }
+
+  before do
+    mock_get_meta_data
+
+    block_one = create :block_one
+    13.times do
+      create :transaction, block: block_one, tx_hash: random(32)
+    end
+
+    create :transaction, block: block_one, tx_hash: random(32), from: from
+    create :transaction, block: block_one, tx_hash: random(32), to: to
+  end
+
+  context "index" do
+    it "no params" do
+      post :index, params: {}
+      expect(count).to eq 10
+    end
+
+    context "with account" do
+      it "equal to from" do
+        post :index, params: { account: from }
+        expect(count).to eq 1
+      end
+
+      it "equal to to" do
+        post :index, params: { account: to }
+        expect(count).to eq 1
+      end
+    end
+
+    it "with from" do
+      post :index, params: { from: from }
+      expect(count).to eq 1
+    end
+
+    it "with to" do
+      post :index, params: { to: to }
+      expect(count).to eq 1
+    end
+
+    context "ignore case" do
+      let(:swapcase_from) { from.swapcase }
+      let(:swapcase_to) { to.swapcase }
+
+      it "with swapcase from" do
+        post :index, params: { from: swapcase_from }
+        expect(count).to eq 1
+      end
+
+      it "with swapcase to" do
+        post :index, params: { to: swapcase_to }
+        expect(count).to eq 1
+      end
+
+      it "with swapcase account" do
+        post :index, params: { account: swapcase_from }
+        expect(count).to eq 1
+      end
+    end
+
+    it "with page and perPage" do
+      post :index, params: { page: 2, perPage: 10 }
+      expect(result[:transactions].count).to eq 5
+    end
+
+    it "with offset and limit" do
+      post :index, params: { offset: 10, limit: 10 }
+      expect(count).to eq 5
+    end
+
+    it "with offset" do
+      post :index, params: { offset: 0 }
+      expect(count).to eq 10
+    end
+
+    it "with limit" do
+      post :index, params: { limit: 5 }
+      expect(count).to eq 5
+    end
+
+    context "with valueFormat" do
+      let(:value_decimal) { attributes_for(:transaction)[:value] }
+      let(:value_hex) { "0x0000000000000000000000000000000000000000000000000000000000001000" }
+      it "return decimal if valueFormat equals decimal" do
+        get :index, params: { valueFormat: "decimal" }
+
+        expect(result["transactions"].map {|n| n["value"]}.uniq).to match_array [value_decimal]
+      end
+
+      it "return hex if valueFormat equals hex" do
+        get :index, params: { valueFormat: 'hex' }
+
+        expect(result["transactions"].map {|n| n["value"]}.uniq).to match_array [value_hex]
+      end
+
+      it "return hex if valueFormat not set" do
+        get :index
+
+        expect(result["transactions"].map {|n| n["value"]}.uniq).to match_array [value_hex]
+      end
+    end
+  end
+end