diff --git a/src/api/debug.go b/src/api/debug.go
index f6a0fef..a9fa905 100644
--- a/src/api/debug.go
+++ b/src/api/debug.go
@@ -25,6 +25,10 @@ func parseResponse(resp string) (agentcheck.Response, error) {
     return agentcheck.NewStatusResponse(rtype), nil
 }
 
+func DebugApiFactory(args ApiArguments) ApiInterface {
+    return NewDebugApi(args.Url)
+}
+
 func NewDebugApi(response string) DebugApi {
 
     resp, _ := parseResponse(response)
diff --git a/src/api/debug_test.go b/src/api/debug_test.go
index 12078d1..d262cf3 100644
--- a/src/api/debug_test.go
+++ b/src/api/debug_test.go
@@ -7,6 +7,18 @@ import (
 	"github.com/eosswedenorg-go/haproxy/agentcheck"
 )
 
+func TestDebugApiFactory(t *testing.T) {
+
+    api := DebugApiFactory(ApiArguments{
+        Url: "up",
+        Host: "host",
+        NumBlocks: 40,
+    })
+
+    assert.IsType(t, DebugApi{}, api)
+    assert.Equal(t, api.(DebugApi).response, agentcheck.NewStatusResponse(agentcheck.Up))
+}
+
 func TestNewDebugApi(t *testing.T) {
 	type args struct {
 		response string
diff --git a/src/api/eosio_contract.go b/src/api/eosio_contract.go
index a53cd20..8bc8687 100644
--- a/src/api/eosio_contract.go
+++ b/src/api/eosio_contract.go
@@ -14,6 +14,10 @@ type EosioContract struct {
     block_time float64
 }
 
+func EosioContractFactory(args ApiArguments) ApiInterface {
+    return NewEosioContract(args.Url, float64(args.NumBlocks / 2))
+}
+
 func NewEosioContract(url string, block_time float64) EosioContract {
     return EosioContract{
         client: contract_api.Client{
diff --git a/src/api/eosio_contract_test.go b/src/api/eosio_contract_test.go
index a5561b9..9c1520f 100644
--- a/src/api/eosio_contract_test.go
+++ b/src/api/eosio_contract_test.go
@@ -10,6 +10,21 @@ import (
     "github.com/eosswedenorg-go/haproxy/agentcheck"
 )
 
+func TestEosioContractFactory(t *testing.T) {
+
+    api := EosioContractFactory(ApiArguments{
+        Url: "https://atomic.example.com",
+        NumBlocks: 120,
+    })
+
+    expected := NewEosioContract("https://atomic.example.com", 60)
+
+    assert.IsType(t, expected, api)
+    assert.Equal(t, expected.client.Url, api.(EosioContract).client.Url)
+    assert.Equal(t, expected.client.Host, api.(EosioContract).client.Host)
+    assert.Equal(t, expected.block_time, api.(EosioContract).block_time)
+}
+
 func TestEosioContractLogInfo(t *testing.T) {
 
     api := NewEosioContract("https://atomic.example.com", 120)
diff --git a/src/api/eosio_v1.go b/src/api/eosio_v1.go
index c9fce59..193bac4 100644
--- a/src/api/eosio_v1.go
+++ b/src/api/eosio_v1.go
@@ -14,6 +14,10 @@ type EosioV1 struct {
     block_time float64
 }
 
+func EosioV1Factory(args ApiArguments) ApiInterface {
+    return NewEosioV1(args.Url, args.Host, float64(args.NumBlocks / 2))
+}
+
 func NewEosioV1(url string, host string, block_time float64) EosioV1 {
 
     api := EosioV1{
diff --git a/src/api/eosio_v1_test.go b/src/api/eosio_v1_test.go
index eba6f63..251d9ff 100644
--- a/src/api/eosio_v1_test.go
+++ b/src/api/eosio_v1_test.go
@@ -10,6 +10,22 @@ import (
     "github.com/eosswedenorg-go/haproxy/agentcheck"
 )
 
+func TestEosioV1Factory(t *testing.T) {
+
+    api := EosioV1Factory(ApiArguments{
+        Url: "https://api.v1.example.com",
+        Host: "host.example.com",
+        NumBlocks: 120,
+    })
+
+    expected := NewEosioV1("https://api.v1.example.com", "host.example.com", 60)
+
+    assert.IsType(t, expected, api)
+    assert.Equal(t, expected.client.Url, api.(EosioV1).client.Url)
+    assert.Equal(t, expected.client.Host, api.(EosioV1).client.Host)
+    assert.Equal(t, expected.block_time, api.(EosioV1).block_time)
+}
+
 func TestEosioV1LogInfo(t *testing.T) {
 
     api := NewEosioV1("https://api.v1.example.com", "host.example.com", 120)
diff --git a/src/api/eosio_v2.go b/src/api/eosio_v2.go
index 196d314..f72d390 100644
--- a/src/api/eosio_v2.go
+++ b/src/api/eosio_v2.go
@@ -13,6 +13,10 @@ type EosioV2 struct {
     offset int64
 }
 
+func EosioV2Factory(args ApiArguments) ApiInterface {
+    return NewEosioV2(args.Url, args.Host, int64(args.NumBlocks))
+}
+
 func NewEosioV2(url string, host string, offset int64) EosioV2 {
 
     api := EosioV2{
diff --git a/src/api/eosio_v2_test.go b/src/api/eosio_v2_test.go
index b59be29..ee40188 100644
--- a/src/api/eosio_v2_test.go
+++ b/src/api/eosio_v2_test.go
@@ -9,6 +9,22 @@ import (
     "github.com/eosswedenorg-go/haproxy/agentcheck"
 )
 
+func TestEosioV2Factory(t *testing.T) {
+
+    api := EosioV2Factory(ApiArguments{
+        Url: "https://api.v2.example.com",
+        Host: "host.example.com",
+        NumBlocks: 120,
+    })
+
+    expected := NewEosioV2("https://api.v2.example.com", "host.example.com", 120)
+
+    assert.IsType(t, expected, api)
+    assert.Equal(t, expected.client.Url, api.(EosioV2).client.Url)
+    assert.Equal(t, expected.client.Host, api.(EosioV2).client.Host)
+    assert.Equal(t, expected.offset, api.(EosioV2).offset)
+}
+
 func TestEosioV2LogInfo(t *testing.T) {
 
     api := NewEosioV2("https://api.v2.example.com", "host.example.com", 120)
diff --git a/src/api/interface.go b/src/api/interface.go
index 910b6ac..dcb5760 100644
--- a/src/api/interface.go
+++ b/src/api/interface.go
@@ -5,6 +5,24 @@ import (
     "github.com/eosswedenorg-go/haproxy/agentcheck"
 )
 
+/**
+ * Generic struct that is passed to factory functions
+ * to configure the API request.
+ */
+type ApiArguments struct {
+    Url string
+    Host string
+    NumBlocks int
+}
+
+/**
+ * Factory function
+ *
+ * Each API must implement this function and process `args`
+ * returing a instance of it's implementation of the ApiInterface
+*/
+type Factory func(args ApiArguments) ApiInterface
+
 type ApiInterface interface {
 
     // Returns Logging information
diff --git a/src/parse_request.go b/src/parse_request.go
index 662b653..c175c4a 100644
--- a/src/parse_request.go
+++ b/src/parse_request.go
@@ -8,32 +8,26 @@ import (
     "github.com/eosswedenorg/eosio-api-healthcheck/src/api"
 )
 
-type arguments struct {
-    url string
-    host string
-    num_blocks int
-}
+func ParseArguments(args []string) api.ApiArguments {
 
-func ParseArguments(args []string) arguments {
-
-    a := arguments{
-        num_blocks: 10,
+    a := api.ApiArguments{
+        NumBlocks: 10,
     }
 
     // 1. url (scheme + ip/domain + port)
-    a.url = args[0]
+    a.Url = args[0]
 
     // 2. num blocks
     if len(args) > 1 {
         num, err := strconv.ParseInt(args[1], 10, 32)
         if err == nil {
-            a.num_blocks = int(num)
+            a.NumBlocks = int(num)
         }
     }
 
     // 3. Host
     if len(args) > 2 {
-        a.host = args[2]
+        a.Host = args[2]
     }
 
     return a
@@ -41,6 +35,13 @@ func ParseArguments(args []string) arguments {
 
 func ParseRequest(request string) (api.ApiInterface, error) {
 
+    factories := map[string]api.Factory{
+        "v1": api.EosioV1Factory,
+        "v2": api.EosioV2Factory,
+        "contract": api.EosioContractFactory,
+        "debug": api.DebugApiFactory,
+    }
+
     // Parse arguments.
     // -------------------
     p := strings.Split(strings.TrimSpace(request), "|")
@@ -51,15 +52,8 @@ func ParseRequest(request string) (api.ApiInterface, error) {
 
     a := ParseArguments(p[1:])
 
-    switch p[0] {
-    case "v1":
-        return api.NewEosioV1(a.url, a.host, float64(a.num_blocks / 2)), nil
-    case "v2":
-        return api.NewEosioV2(a.url, a.host, int64(a.num_blocks)), nil
-    case "contract":
-        return api.NewEosioContract(a.url, float64(a.num_blocks / 2)), nil
-    case "debug":
-        return api.NewDebugApi(a.url), nil
+    if factory, ok := factories[p[0]]; ok {
+        return factory(a), nil
     }
 
     return nil, fmt.Errorf("invalid API '%s'", p[0])