diff --git a/src/autometabuilder/__init__.py b/src/autometabuilder/__init__.py
index 9774f66..d0d8fd0 100644
--- a/src/autometabuilder/__init__.py
+++ b/src/autometabuilder/__init__.py
@@ -6,15 +6,25 @@ import json
 
 
 def load_messages():
-    """Load messages based on APP_LANG environment variable."""
+    """Load messages based on APP_LANG environment variable and metadata."""
+    metadata_path = os.path.join(os.path.dirname(__file__), "metadata.json")
+    if os.path.exists(metadata_path):
+        with open(metadata_path, "r", encoding="utf-8") as f:
+            metadata = json.load(f)
+            messages_map = metadata.get("messages", {})
+    else:
+        messages_map = {}
+
     lang = os.environ.get("APP_LANG", "en")
-    messages_path = os.path.join(
-        os.path.dirname(__file__), f"messages_{lang}.json"
-    )
+    
+    # Get filename from metadata or fallback to default pattern
+    messages_file = messages_map.get(lang, f"messages_{lang}.json")
+    messages_path = os.path.join(os.path.dirname(__file__), messages_file)
+
     if not os.path.exists(messages_path):
-        # Fallback to English if the requested language file doesn't exist
-        messages_path = os.path.join(
-            os.path.dirname(__file__), "messages_en.json"
-        )
+        # Fallback to English from metadata or default messages_en.json
+        en_file = messages_map.get("en", "messages_en.json")
+        messages_path = os.path.join(os.path.dirname(__file__), en_file)
+    
     with open(messages_path, "r", encoding="utf-8") as f:
         return json.load(f)
diff --git a/src/autometabuilder/main.py b/src/autometabuilder/main.py
index c89ab66..8bc3e80 100644
--- a/src/autometabuilder/main.py
+++ b/src/autometabuilder/main.py
@@ -270,6 +270,139 @@ def handle_tool_calls(resp_msg, tool_map: dict, gh: GitHubIntegration, msgs: dic
     return tool_results
 
 
+class WorkflowEngine:
+    """Interpret and execute a JSON-defined workflow."""
+
+    def __init__(self, workflow_config, context):
+        self.workflow_config = workflow_config
+        self.context = context
+        self.state = {}
+
+    def execute(self):
+        """Execute the workflow sequence."""
+        for phase in self.workflow_config:
+            if phase.get("type") == "loop":
+                self._execute_loop(phase)
+            else:
+                self._execute_phase(phase)
+
+    def _execute_phase(self, phase):
+        """Execute a phase which contains steps."""
+        logger.info(f"--- Executing phase: {phase.get('name', 'unnamed')} ---")
+        for step in phase.get("steps", []):
+            self._execute_step(step)
+
+    def _execute_loop(self, phase):
+        """Execute a loop of steps."""
+        max_iterations = phase.get("max_iterations", 10)
+        if self.context["args"].once:
+            max_iterations = 2 # At most 2 passes for --once
+
+        iteration = 0
+        while iteration < max_iterations:
+            iteration += 1
+            logger.info(f"--- {phase.get('name', 'loop')} Iteration {iteration} ---")
+            should_stop = False
+            for step in phase.get("steps", []):
+                result = self._execute_step(step)
+                if step.get("stop_if_no_tools") and result is True:
+                    should_stop = True
+                    break
+            
+            if should_stop or (self.context["args"].once and iteration >= 1 and not self.state.get("llm_response").tool_calls):
+                 break
+            
+            if self.context["args"].once and iteration == 2:
+                break
+
+    def _execute_step(self, step):
+        """Execute a single workflow step."""
+        step_type = step.get("type")
+        output_key = step.get("output_key")
+
+        try:
+            if step_type == "load_context":
+                sdlc_context = get_sdlc_context(self.context["gh"], self.context["msgs"])
+                if output_key:
+                    self.state[output_key] = sdlc_context
+                return sdlc_context
+
+            elif step_type == "prepare_messages":
+                prompt = self.context["prompt"]
+                msgs = self.context["msgs"]
+                sdlc_context_val = self.state.get(step.get("input_context"))
+                messages = list(prompt["messages"]) # Copy to avoid mutating original prompt
+                if sdlc_context_val:
+                    messages.append(
+                        {
+                            "role": "system",
+                            "content": f"{msgs['sdlc_context_label']}{sdlc_context_val}",
+                        }
+                    )
+                messages.append({"role": "user", "content": msgs["user_next_step"]})
+                if output_key:
+                    self.state[output_key] = messages
+                return messages
+
+            elif step_type == "llm_gen":
+                messages = self.state.get(step.get("input_messages"))
+                response = get_completion(
+                    self.context["client"],
+                    self.context["model_name"],
+                    messages,
+                    self.context["tools"]
+                )
+                resp_msg = response.choices[0].message
+                logger.info(
+                    resp_msg.content
+                    if resp_msg.content
+                    else self.context["msgs"]["info_tool_call_requested"]
+                )
+                messages.append(resp_msg)  # Append AI response to messages
+                if output_key:
+                    self.state[output_key] = resp_msg
+                return resp_msg
+
+            elif step_type == "process_response":
+                resp_msg = self.state.get(step.get("input_response"))
+                tool_results = handle_tool_calls(
+                    resp_msg,
+                    self.context["tool_map"],
+                    self.context["gh"],
+                    self.context["msgs"],
+                    dry_run=self.context["args"].dry_run,
+                    yolo=self.context["args"].yolo
+                )
+                if output_key:
+                    self.state[output_key] = tool_results
+                
+                if step.get("stop_if_no_tools") and not resp_msg.tool_calls:
+                    notify_all(f"AutoMetabuilder task complete: {resp_msg.content[:100]}...")
+                    return True # Signal to stop loop
+                return False
+
+            elif step_type == "update_messages":
+                tool_results = self.state.get(step.get("input_results"))
+                target_messages = self.state.get(step.get("target_messages"))
+                if tool_results and target_messages is not None:
+                    target_messages.extend(tool_results)
+                
+                # Check for MVP if yolo
+                if self.context["args"].yolo and is_mvp_reached():
+                    logger.info("MVP reached. Stopping YOLO loop.")
+                    notify_all("AutoMetabuilder YOLO loop stopped: MVP reached.")
+                    return True
+
+            else:
+                logger.error(f"Unknown step type: {step_type}")
+
+        except Exception as e:
+            logger.error(f"Error executing step {step_type}: {e}")
+            raise
+
+        return None
+
+
 def main():
     """Main function to run AutoMetabuilder."""
     parser = argparse.ArgumentParser(description="AutoMetabuilder: AI-driven SDLC assistant.")
@@ -306,8 +439,13 @@ def main():
 
     prompt = load_prompt_yaml()
 
+    # Load Metadata
+    metadata_path = os.path.join(os.path.dirname(__file__), "metadata.json")
+    with open(metadata_path, "r", encoding="utf-8") as f:
+        metadata = json.load(f)
+
     # Load tools for SDLC operations from JSON file
-    tools_path = os.path.join(os.path.dirname(__file__), "tools.json")
+    tools_path = os.path.join(os.path.dirname(__file__), metadata.get("tools_path", "tools.json"))
     with open(tools_path, "r", encoding="utf-8") as f:
         tools = json.load(f)
 
@@ -329,71 +467,27 @@ def main():
     # Load plugins and update tool_map and tools list
     load_plugins(tool_map, tools)
 
-    # Add SDLC Context if available
-    sdlc_context_val = get_sdlc_context(gh, msgs)
-
-    messages = prompt["messages"]
-    if sdlc_context_val:
-        messages.append(
-            {
-                "role": "system",
-                "content": f"{msgs['sdlc_context_label']}{sdlc_context_val}",
-            }
-        )
-
-    # Add runtime request
-    messages.append({"role": "user", "content": msgs["user_next_step"]})
-
     model_name = os.environ.get("LLM_MODEL", prompt.get("model", DEFAULT_MODEL))
 
-    # Multi-iteration loop
-    iteration = 0
-    max_iterations = 10
-    
-    while iteration < max_iterations:
-        iteration += 1
-        logger.info(f"--- Iteration {iteration} ---")
-        
-        response = get_completion(client, model_name, messages, tools)
-        resp_msg = response.choices[0].message
-        
-        logger.info(
-            resp_msg.content
-            if resp_msg.content
-            else msgs["info_tool_call_requested"]
-        )
-        
-        messages.append(resp_msg)
-        
-        if not resp_msg.tool_calls:
-            # If no more tools requested, we are done
-            notify_all(f"AutoMetabuilder task complete: {resp_msg.content[:100]}...")
-            break
-            
-        # Handle tool calls
-        tool_results = handle_tool_calls(resp_msg, tool_map, gh, msgs, dry_run=args.dry_run, yolo=args.yolo)
-        messages.extend(tool_results)
+    # Load Workflow
+    workflow_path = os.path.join(os.path.dirname(__file__), metadata.get("workflow_path", "workflow.json"))
+    with open(workflow_path, "r", encoding="utf-8") as f:
+        workflow_config = json.load(f)
 
-        if args.yolo and is_mvp_reached():
-            logger.info("MVP reached. Stopping YOLO loop.")
-            notify_all("AutoMetabuilder YOLO loop stopped: MVP reached.")
-            break
-        
-        if args.once:
-            # If --once is set, we do one more pass to show the final result
-            logger.info(msgs.get("info_second_pass", "Performing second pass with tool results..."))
-            response = get_completion(client, model_name, messages, tools)
-            final_msg = response.choices[0].message
-            logger.info(final_msg.content if final_msg.content else msgs["info_tool_call_requested"])
-            notify_all(f"AutoMetabuilder task complete: {final_msg.content[:100]}...")
-            
-            # For --once, we still handle tool calls if any in the second pass, but then stop.
-            if final_msg.tool_calls:
-                handle_tool_calls(final_msg, tool_map, gh, msgs, dry_run=args.dry_run, yolo=args.yolo)
-            break
-    else:
-        logger.warning(f"Reached maximum iterations ({max_iterations}). Stopping.")
-        notify_all(f"AutoMetabuilder stopped: Reached {max_iterations} iterations.")
+    # Initialize Context for Workflow Engine
+    workflow_context = {
+        "gh": gh,
+        "msgs": msgs,
+        "client": client,
+        "prompt": prompt,
+        "tools": tools,
+        "tool_map": tool_map,
+        "model_name": model_name,
+        "args": args
+    }
+
+    engine = WorkflowEngine(workflow_config, workflow_context)
+    engine.execute()
 
 
 if __name__ == "__main__":
diff --git a/src/autometabuilder/metadata.json b/src/autometabuilder/metadata.json
new file mode 100644
index 0000000..c1f4741
--- /dev/null
+++ b/src/autometabuilder/metadata.json
@@ -0,0 +1,13 @@
+{
+  "tools_path": "tools.json",
+  "workflow_path": "workflow.json",
+  "messages": {
+    "en": "messages_en.json",
+    "es": "messages_es.json",
+    "fr": "messages_fr.json",
+    "nl": "messages_nl.json",
+    "pirate": "messages_pirate.json"
+  },
+  "project_name": "AutoMetabuilder",
+  "version": "1.0.0"
+}
diff --git a/src/autometabuilder/web/server.py b/src/autometabuilder/web/server.py
index a7de809..22dcce8 100644
--- a/src/autometabuilder/web/server.py
+++ b/src/autometabuilder/web/server.py
@@ -70,7 +70,21 @@ def get_env_vars():
             env_vars[key] = value
     return env_vars
 
+def get_metadata():
+    pkg_dir = os.path.dirname(os.path.dirname(__file__))
+    metadata_path = os.path.join(pkg_dir, "metadata.json")
+    if not os.path.exists(metadata_path):
+        return {}
+    with open(metadata_path, "r", encoding="utf-8") as f:
+        return json.load(f)
+
 def get_translations():
+    metadata = get_metadata()
+    messages_map = metadata.get("messages", {})
+    if messages_map:
+        return messages_map
+    
+    # Fallback to scanning if metadata is empty
     pkg_dir = os.path.dirname(os.path.dirname(__file__))
     files = [f for f in os.listdir(pkg_dir) if f.startswith("messages_") and f.endswith(".json")]
     translations = {}
@@ -86,12 +100,23 @@ def get_prompt_content():
     with open(prompt_path, "r", encoding="utf-8") as f:
         return f.read()
 
+def get_workflow_content():
+    pkg_dir = os.path.dirname(os.path.dirname(__file__))
+    metadata = get_metadata()
+    workflow_file = metadata.get("workflow_path", "workflow.json")
+    workflow_path = os.path.join(pkg_dir, workflow_file)
+    if not os.path.exists(workflow_path):
+        return ""
+    with open(workflow_path, "r", encoding="utf-8") as f:
+        return f.read()
+
 @app.get("/", response_class=HTMLResponse)
 async def read_item(request: Request, username: str = Depends(get_current_user)):
     logs = get_recent_logs()
     env_vars = get_env_vars()
     translations = get_translations()
     prompt_content = get_prompt_content()
+    workflow_content = get_workflow_content()
     is_running = bot_process is not None
     mvp_status = is_mvp_reached()
     return templates.TemplateResponse("index.html", {
@@ -100,6 +125,7 @@ async def read_item(request: Request, username: str = Depends(get_current_user))
         "env_vars": env_vars,
         "translations": translations,
         "prompt_content": prompt_content,
+        "workflow_content": workflow_content,
         "is_running": is_running,
         "mvp_reached": mvp_status,
         "username": username
@@ -119,6 +145,16 @@ async def update_prompt(content: str = Form(...), username: str = Depends(get_cu
         f.write(content)
     return RedirectResponse(url="/", status_code=303)
 
+@app.post("/workflow")
+async def update_workflow(content: str = Form(...), username: str = Depends(get_current_user)):
+    pkg_dir = os.path.dirname(os.path.dirname(__file__))
+    metadata = get_metadata()
+    workflow_file = metadata.get("workflow_path", "workflow.json")
+    workflow_path = os.path.join(pkg_dir, workflow_file)
+    with open(workflow_path, "w", encoding="utf-8") as f:
+        f.write(content)
+    return RedirectResponse(url="/", status_code=303)
+
 @app.post("/settings")
 async def update_settings(request: Request, username: str = Depends(get_current_user)):
     form_data = await request.form()
@@ -150,14 +186,27 @@ async def get_logs(username: str = Depends(get_current_user)):
 @app.post("/translations")
 async def create_translation(lang: str = Form(...), username: str = Depends(get_current_user)):
     pkg_dir = os.path.dirname(os.path.dirname(__file__))
-    en_path = os.path.join(pkg_dir, "messages_en.json")
-    new_path = os.path.join(pkg_dir, f"messages_{lang}.json")
+    metadata = get_metadata()
+    messages_map = metadata.get("messages", {})
+    
+    en_file = messages_map.get("en", "messages_en.json")
+    en_path = os.path.join(pkg_dir, en_file)
+    
+    new_file = f"messages_{lang}.json"
+    new_path = os.path.join(pkg_dir, new_file)
     
     if not os.path.exists(new_path):
         with open(en_path, "r", encoding="utf-8") as f:
             content = json.load(f)
         with open(new_path, "w", encoding="utf-8") as f:
             json.dump(content, f, indent=2)
+        
+        # Update metadata.json
+        messages_map[lang] = new_file
+        metadata["messages"] = messages_map
+        metadata_path = os.path.join(pkg_dir, "metadata.json")
+        with open(metadata_path, "w", encoding="utf-8") as f:
+            json.dump(metadata, f, indent=2)
             
     return RedirectResponse(url="/", status_code=303)
 
diff --git a/src/autometabuilder/web/templates/index.html b/src/autometabuilder/web/templates/index.html
index ec04ed9..82decd0 100644
--- a/src/autometabuilder/web/templates/index.html
+++ b/src/autometabuilder/web/templates/index.html
@@ -92,6 +92,16 @@
             </form>
         </div>
     </div>
+
+    <div class="row mt-4 mb-5">
+        <div class="col-12">
+            <h2>Workflow (workflow.json)</h2>
+            <form action="/workflow" method="post">
+                <textarea name="content" class="form-control" rows="15">{{ workflow_content }}</textarea>
+                <button type="submit" class="btn btn-success mt-2">Save Workflow</button>
+            </form>
+        </div>
+    </div>
     <script>
         async function refreshLogs() {
             try {
diff --git a/src/autometabuilder/workflow.json b/src/autometabuilder/workflow.json
new file mode 100644
index 0000000..4480fd7
--- /dev/null
+++ b/src/autometabuilder/workflow.json
@@ -0,0 +1,39 @@
+[
+  {
+    "name": "initialize_sdlc",
+    "steps": [
+      {
+        "type": "load_context",
+        "output_key": "sdlc_context"
+      },
+      {
+        "type": "prepare_messages",
+        "input_context": "sdlc_context",
+        "output_key": "messages"
+      }
+    ]
+  },
+  {
+    "name": "main_loop",
+    "type": "loop",
+    "max_iterations": 10,
+    "steps": [
+      {
+        "type": "llm_gen",
+        "input_messages": "messages",
+        "output_key": "llm_response"
+      },
+      {
+        "type": "process_response",
+        "input_response": "llm_response",
+        "output_key": "tool_results",
+        "stop_if_no_tools": true
+      },
+      {
+        "type": "update_messages",
+        "input_results": "tool_results",
+        "target_messages": "messages"
+      }
+    ]
+  }
+]
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
new file mode 100644
index 0000000..a832b4e
--- /dev/null
+++ b/tests/test_metadata.py
@@ -0,0 +1,24 @@
+import unittest
+import os
+import json
+from autometabuilder import load_messages
+
+class TestMetadata(unittest.TestCase):
+    def test_metadata_exists(self):
+        metadata_path = os.path.join("src", "autometabuilder", "metadata.json")
+        self.assertTrue(os.path.exists(metadata_path))
+        
+        with open(metadata_path, "r") as f:
+            metadata = json.load(f)
+            self.assertIn("tools_path", metadata)
+            self.assertIn("workflow_path", metadata)
+            self.assertIn("messages", metadata)
+
+    def test_load_messages_with_metadata(self):
+        # Test default language (en)
+        messages = load_messages()
+        self.assertIsInstance(messages, dict)
+        self.assertIn("sdlc_context_label", messages)
+
+if __name__ == '__main__':
+    unittest.main()