diff --git a/wolf/runner.py b/wolf/runner.py
new file mode 100644
index 0000000..54ae4a5
--- /dev/null
+++ b/wolf/runner.py
@@ -0,0 +1,114 @@
+import logging
+import json
+import time
+from typing import Dict, Any, List, Optional
+from .models import ModelFactory
+from .gitea import GiteaClient
+from .task import Task
+
+class AgentRunner:
+    """
+    Agent runner for Wolf.
+    """
+    def __init__(self, gitea_client: GiteaClient, config: Dict[str, Any]):
+        self.gitea = gitea_client
+        self.config = config
+
+    def execute_task(self, task: Task):
+        """
+        Execute a task through a specified model.
+        """
+        logging.info(f"Executing task {task.id} with model {task.assigned_model} via {task.assigned_provider}")
+        
+        # 1. Craft the prompt
+        prompt = self._craft_prompt(task)
+        
+        # 2. Get the model client
+        provider_config = self.config.get('providers', {}).get(task.assigned_provider, {})
+        client = ModelFactory.get_client(
+            task.assigned_provider, 
+            api_key=provider_config.get('api_key'),
+            base_url=provider_config.get('base_url')
+        )
+        
+        # 3. Generate response
+        try:
+            response = client.generate(prompt, task.assigned_model, system_prompt="You are an expert software engineer.")
+            logging.info(f"Generated response for task {task.id}")
+        except Exception as e:
+            logging.error(f"Error generating response for task {task.id}: {e}")
+            return None
+        
+        # 4. Parse the response (assuming model returns a JSON or specific format)
+        # For simplicity, we'll assume the model returns a JSON with 'files' and 'commit_message'
+        # If not, we'll try to extract it.
+        try:
+            # Try to find JSON in the response
+            if "```json" in response:
+                json_str = response.split("```json")[1].split("```")[0].strip()
+                result = json.loads(json_str)
+            else:
+                result = json.loads(response)
+        except Exception as e:
+            logging.warning(f"Failed to parse JSON from response for task {task.id}: {e}")
+            # Fallback: Treat entire response as a single file change if possible
+            result = {
+                "files": [{"path": "solution.py", "content": response}],
+                "commit_message": f"Solution for task {task.id}"
+            }
+        
+        # 5. Commit the output back to a feature branch
+        branch_name = f"wolf-task-{task.id}-{int(time.time())}"
+        try:
+            self.gitea.create_branch(task.repo_owner, task.repo_name, branch_name)
+            for file_change in result.get('files', []):
+                path = file_change['path']
+                content = file_change['content']
+                
+                # Check if file exists to update or create
+                existing_file = self.gitea.get_file(task.repo_owner, task.repo_name, path)
+                if existing_file:
+                    self.gitea.update_file(
+                        task.repo_owner, task.repo_name, path, content, 
+                        branch_name, existing_file['sha'], 
+                        message=result.get('commit_message', f"Update {path} by Wolf")
+                    )
+                else:
+                    self.gitea.create_file(
+                        task.repo_owner, task.repo_name, path, content, 
+                        branch_name, message=result.get('commit_message', f"Create {path} by Wolf")
+                    )
+            
+            # 6. Create PR
+            pr_title = f"Wolf Task: {task.title}"
+            pr_body = f"This PR was generated by Wolf using model {task.assigned_model} via {task.assigned_provider}.\n\nTask Description:\n{task.description}"
+            pr = self.gitea.create_pull_request(task.repo_owner, task.repo_name, pr_title, pr_body, branch_name)
+            logging.info(f"Created PR {pr['number']} for task {task.id}")
+            return pr
+        except Exception as e:
+            logging.error(f"Error committing changes or creating PR for task {task.id}: {e}")
+            return None
+
+    def _craft_prompt(self, task: Task):
+        """
+        Craft the prompt for the model.
+        """
+        return f"""
+You are an expert software engineer. Your task is to solve the following coding problem:
+
+Title: {task.title}
+Description: {task.description}
+
+Please provide the solution as a JSON object with the following structure:
+{{
+  "files": [
+    {{
+      "path": "path/to/file.py",
+      "content": "file content here"
+    }}
+  ],
+  "commit_message": "A meaningful commit message"
+}}
+
+Ensure the code is correct, well-documented, and follows best practices.
+"""