init

autonomous_agent_demo.py

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+#!/usr/bin/env python3
+"""
+Autonomous Coding Agent Demo
+============================
+
+A minimal harness demonstrating long-running autonomous coding with Claude.
+This script implements the two-agent pattern (initializer + coding agent) and
+incorporates all the strategies from the long-running agents guide.
+
+Example Usage:
+    python autonomous_agent_demo.py --project-dir ./claude_clone_demo
+    python autonomous_agent_demo.py --project-dir ./claude_clone_demo --max-iterations 5
+"""
+
+import argparse
+import asyncio
+import os
+from pathlib import Path
+
+from dotenv import load_dotenv
+
+# Load environment variables from .env file (if it exists)
+# IMPORTANT: Must be called BEFORE importing other modules that read env vars at load time
+load_dotenv()
+
+from agent import run_autonomous_agent
+
+
+# Configuration
+# DEFAULT_MODEL = "claude-sonnet-4-5-20250929"
+DEFAULT_MODEL = "claude-opus-4-5-20251101"
+
+
+def parse_args() -> argparse.Namespace:
+    """Parse command line arguments."""
+    parser = argparse.ArgumentParser(
+        description="Autonomous Coding Agent Demo - Long-running agent harness",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+Examples:
+  # Start fresh project
+  python autonomous_agent_demo.py --project-dir ./claude_clone
+
+  # Use a specific model
+  python autonomous_agent_demo.py --project-dir ./claude_clone --model claude-sonnet-4-5-20250929
+
+  # Limit iterations for testing
+  python autonomous_agent_demo.py --project-dir ./claude_clone --max-iterations 5
+
+  # Continue existing project
+  python autonomous_agent_demo.py --project-dir ./claude_clone
+
+Authentication:
+  Uses Claude CLI credentials from ~/.claude/.credentials.json
+  Run 'claude login' to authenticate (handled by start.bat/start.sh)
+        """,
+    )
+
+    parser.add_argument(
+        "--project-dir",
+        type=Path,
+        default=Path("./autonomous_demo_project"),
+        help="Directory for the project (default: generations/autonomous_demo_project). Relative paths automatically placed in generations/ directory.",
+    )
+
+    parser.add_argument(
+        "--max-iterations",
+        type=int,
+        default=None,
+        help="Maximum number of agent iterations (default: unlimited)",
+    )
+
+    parser.add_argument(
+        "--model",
+        type=str,
+        default=DEFAULT_MODEL,
+        help=f"Claude model to use (default: {DEFAULT_MODEL})",
+    )
+
+    return parser.parse_args()
+
+
+def main() -> None:
+    """Main entry point."""
+    args = parse_args()
+
+    # Note: Authentication is handled by start.bat/start.sh before this script runs.
+    # The Claude SDK auto-detects credentials from ~/.claude/.credentials.json
+
+    # Automatically place projects in generations/ directory unless already specified
+    project_dir = args.project_dir
+    if not str(project_dir).startswith("generations/"):
+        # Convert relative paths to be under generations/
+        if project_dir.is_absolute():
+            # If absolute path, use as-is
+            pass
+        else:
+            # Prepend generations/ to relative paths
+            project_dir = Path("generations") / project_dir
+
+    try:
+        # Run the agent (MCP server handles feature database)
+        asyncio.run(
+            run_autonomous_agent(
+                project_dir=project_dir,
+                model=args.model,
+                max_iterations=args.max_iterations,
+            )
+        )
+    except KeyboardInterrupt:
+        print("\n\nInterrupted by user")
+        print("To resume, run the same command again")
+    except Exception as e:
+        print(f"\nFatal error: {e}")
+        raise
+
+
+if __name__ == "__main__":
+    main()