diff --git a/src/BaselineOfLLMAPI/BaselineOfLLMAPI.class.st b/src/BaselineOfLLMAPI/BaselineOfLLMAPI.class.st
index 2e2c7f3..b60f91a 100644
--- a/src/BaselineOfLLMAPI/BaselineOfLLMAPI.class.st
+++ b/src/BaselineOfLLMAPI/BaselineOfLLMAPI.class.st
@@ -20,7 +20,11 @@ BaselineOfLLMAPI >> defineDependencies: spec [
 
 	spec
 		baseline: 'NeoJSON'
-		with: [ spec repository: 'github://svenvc/NeoJSON/repository' ]
+		with: [ spec repository: 'github://svenvc/NeoJSON/repository' ].
+
+	spec
+		baseline: 'Mocketry'
+		with: [ spec repository: 'github://dionisiydk/Mocketry' ]
 ]
 
 { #category : 'baselines' }
@@ -31,6 +35,7 @@ BaselineOfLLMAPI >> defineGroups: spec [
 BaselineOfLLMAPI >> definePackages: spec [
 
 	spec package: 'LLM-API' with: [ spec requires: #( 'NeoJSON' ) ].
+	spec package: 'LLM-API-Tests' with: [ spec requires: #( 'LLM-API' 'Mocketry' ) ].
 	spec package: 'LLM-API-Example' with: [ spec requires: #( 'LLM-API' ) ].
 	spec package: 'LLM-Spec' with: [ spec requires: #( 'LLM-API' ) ]
 ]
diff --git a/src/LLM-API-Tests/LLMAPIChatTest.class.st b/src/LLM-API-Tests/LLMAPIChatTest.class.st
new file mode 100644
index 0000000..7b26e95
--- /dev/null
+++ b/src/LLM-API-Tests/LLMAPIChatTest.class.st
@@ -0,0 +1,32 @@
+"
+A LLMAPIChatTest is a test class for testing the behavior of LLMAPIChat
+"
+Class {
+	#name : 'LLMAPIChatTest',
+	#superclass : 'TestCase',
+	#instVars : [
+		'api'
+	],
+	#category : 'LLM-API-Tests',
+	#package : 'LLM-API-Tests'
+}
+
+{ #category : 'running' }
+LLMAPIChatTest >> setUp [
+
+	super setUp.
+
+	api := LLMAPI chat
+]
+
+{ #category : 'running' }
+LLMAPIChatTest >> testCheckModelExist [
+
+	self should: [ api performRequest ] raise: LLMPayloadNoModelError
+]
+
+{ #category : 'running' }
+LLMAPIChatTest >> testCorrectInstance [
+
+	self assert: api class equals: LLMAPIChat
+]
diff --git a/src/LLM-API-Tests/LLMAPIFimTest.class.st b/src/LLM-API-Tests/LLMAPIFimTest.class.st
new file mode 100644
index 0000000..30ae864
--- /dev/null
+++ b/src/LLM-API-Tests/LLMAPIFimTest.class.st
@@ -0,0 +1,29 @@
+Class {
+	#name : 'LLMAPIFimTest',
+	#superclass : 'TestCase',
+	#instVars : [
+		'api'
+	],
+	#category : 'LLM-API-Tests',
+	#package : 'LLM-API-Tests'
+}
+
+{ #category : 'running' }
+LLMAPIFimTest >> setUp [
+
+	super setUp.
+
+	api := LLMAPI fim
+]
+
+{ #category : 'running' }
+LLMAPIFimTest >> testCheckModelExist [
+
+	self should: [ api performRequest ] raise: LLMPayloadNoModelError
+]
+
+{ #category : 'running' }
+LLMAPIFimTest >> testCorrectInstance [
+
+	self assert: api class equals: LLMAPIFim
+]
diff --git a/src/LLM-API-Tests/package.st b/src/LLM-API-Tests/package.st
new file mode 100644
index 0000000..206696e
--- /dev/null
+++ b/src/LLM-API-Tests/package.st
@@ -0,0 +1 @@
+Package { #name : 'LLM-API-Tests' }
diff --git a/src/LLM-API/LLMAPI.class.st b/src/LLM-API/LLMAPI.class.st
index 841eb16..8a481e2 100644
--- a/src/LLM-API/LLMAPI.class.st
+++ b/src/LLM-API/LLMAPI.class.st
@@ -6,11 +6,14 @@ Class {
 		'port',
 		'client',
 		'content',
-		'apiKey'
+		'apiKey',
+		'https'
 	],
 	#classInstVars : [
 		'apiKey',
-		'host'
+		'host',
+		'port',
+		'https'
 	],
 	#category : 'LLM-API',
 	#package : 'LLM-API'
@@ -52,6 +55,18 @@ LLMAPI class >> host: anObject [
 	host := anObject
 ]
 
+{ #category : 'accessing' }
+LLMAPI class >> https [
+
+	^ https
+]
+
+{ #category : 'accessing' }
+LLMAPI class >> https: aBoolean [
+
+	https := aBoolean
+]
+
 { #category : 'as yet unclassified' }
 LLMAPI class >> llmSettingOn: aBuilder [
 
@@ -60,18 +75,41 @@ LLMAPI class >> llmSettingOn: aBuilder [
 		parent: #tools;
 		name: 'LLM API';
 		with: [
-			(aBuilder setting: #apiKey)
-				order: -100000;
-				label: 'LLM API Key';
-				target: self;
-				default: '';
-				ghostHelp: 'My key'.
-			(aBuilder setting: #host)
-				order: 0;
-				label: 'LLM host';
-				target: self;
-				default: 'api.mistral.ai';
-				ghostHelp: 'api.mistral.ai' ]
+				(aBuilder setting: #apiKey)
+					order: -100000;
+					label: 'LLM API Key';
+					target: self;
+					default: '';
+					ghostHelp: 'My key'.
+				(aBuilder setting: #host)
+					order: 0;
+					label: 'LLM host';
+					target: self;
+					default: 'api.mistral.ai';
+					ghostHelp: 'api.mistral.ai'.
+				(aBuilder setting: #port)
+					order: 0;
+					label: 'LLM port';
+					target: self;
+					default: 443;
+					ghostHelp: '443'.
+				(aBuilder setting: #https)
+					order: 0;
+					label: 'LLM host uses ssl (https)';
+					target: self;
+					default: true ]
+]
+
+{ #category : 'accessing' }
+LLMAPI class >> port [
+
+	^ port
+]
+
+{ #category : 'accessing' }
+LLMAPI class >> port: aPortNumber [
+
+	port := aPortNumber
 ]
 
 { #category : 'accessing' }
@@ -122,6 +160,18 @@ LLMAPI >> host: anObject [
 	host := anObject
 ]
 
+{ #category : 'accessing' }
+LLMAPI >> https [
+
+	^ https
+]
+
+{ #category : 'accessing' }
+LLMAPI >> https: aBoolean [
+
+	https := aBoolean
+]
+
 { #category : 'initialization' }
 LLMAPI >> initialize [
 
@@ -129,6 +179,9 @@ LLMAPI >> initialize [
 	client := ZnClient new.
 	self apiKey: LLMAPI apiKey.
 	self host: LLMAPI host.
+	self port: LLMAPI port.
+	self https: LLMAPI https.
+	
 ]
 
 { #category : 'accessing' }
@@ -172,11 +225,18 @@ LLMAPI >> port: anObject [
 
 { #category : 'accessing' }
 LLMAPI >> prepareRequest [
+	"check some properties"
 
+	(self payload model isNil or: [ self payload model isEmpty ])
+		ifTrue: [ LLMPayloadNoModelError signal ].
+	"Prepare request"
 	self apiKey ifNotNil: [ :_apiKey |
 		client setBearerAuthentication: _apiKey ].
 	client forJsonREST.
-	client https.
+	(self https isNil or: [ self https ])
+		ifTrue: [ client https ]
+		ifFalse: [ client http ].
 	client host: self host.
+	client port: self port.
 	client path: self path
 ]
diff --git a/src/LLM-API/LLMAPIChat.class.st b/src/LLM-API/LLMAPIChat.class.st
index 2df7f40..9bbf317 100644
--- a/src/LLM-API/LLMAPIChat.class.st
+++ b/src/LLM-API/LLMAPIChat.class.st
@@ -1,3 +1,25 @@
+"
+# Example with ollama
+
+```st
+api := LLMAPI chat.
+api host: '127.0.0.1'.
+api port: 11434.
+api apiKey: nil.
+
+api payload
+	temperature: 0.5;
+	model: 'devstral';
+	top_p: 1;
+	max_tokens: 250;
+	messages: {
+		LLMAPIChatObjectMessage role: 'system' content: 'You are a usefull assistant'.
+		LLMAPIChatObjectMessage role: 'user' content: 'How to write hello world in Pharo?'.
+		 }.
+
+result := api performRequest.
+```
+"
 Class {
 	#name : 'LLMAPIChat',
 	#superclass : 'LLMAPI',
@@ -16,7 +38,7 @@ LLMAPIChat >> payloadClass [
 	^ LLMAPIChatObjectPayload
 ]
 
-{ #category : 'accessing' }
+{ #category : 'api' }
 LLMAPIChat >> performRequest [
 
 	| intermediateResult |
diff --git a/src/LLM-API/LLMAPIFim.class.st b/src/LLM-API/LLMAPIFim.class.st
index eddccd5..3ca049c 100644
--- a/src/LLM-API/LLMAPIFim.class.st
+++ b/src/LLM-API/LLMAPIFim.class.st
@@ -16,7 +16,7 @@ LLMAPIFim >> payloadClass [
 	^ LLMAPIFimObjectPayload
 ]
 
-{ #category : 'accessing' }
+{ #category : 'api' }
 LLMAPIFim >> performRequest [
 
 	self prepareRequest.
diff --git a/src/LLM-API/LLMPayloadNoModelError.class.st b/src/LLM-API/LLMPayloadNoModelError.class.st
new file mode 100644
index 0000000..4803d39
--- /dev/null
+++ b/src/LLM-API/LLMPayloadNoModelError.class.st
@@ -0,0 +1,13 @@
+Class {
+	#name : 'LLMPayloadNoModelError',
+	#superclass : 'Error',
+	#category : 'LLM-API',
+	#package : 'LLM-API'
+}
+
+{ #category : 'default' }
+LLMPayloadNoModelError >> defaultDescription [
+	"Return a textual description of the exception."
+
+	^ 'No model set in the payload. Add a model before calling the API.'
+]