diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 00000000..34f84a8d
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,30 @@
+{
+  "name": "py-launch-blueprint",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": ".."
+  },
+  "postCreateCommand": "just --version",
+  "mounts": [
+    "source=/var/run/docker.sock,target=/var/run/docker.sock,type=bind"
+  ],
+  "remoteUser": "root",
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash"
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "ms-python.python",
+        "ms-python.vscode-pylance",
+        "charliermarsh.ruff",
+        "matangover.mypy",
+        "tamasfe.even-better-toml",
+        "redhat.vscode-yaml",
+        "eamodio.gitlens",
+        "streetsidesoftware.code-spell-checker"
+      ]
+    }
+  },
+  "features": {}
+}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 68cbfba6..a81b8447 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 # .pre-commit-config.yaml
 repos:
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.15.0
+    rev: v1.16.0
     hooks:
       - id: mypy
         additional_dependencies: [
@@ -21,7 +21,7 @@ repos:
       - id: check-toml
       - id: check-added-large-files
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.11.11
+    rev: v0.11.12
     hooks:
       - id: ruff
         entry: ruff check --force-exclude --no-cache
@@ -49,8 +49,13 @@ repos:
         types: [python]
         pass_filenames: false # Run full test suite
         stages: [pre-commit] # Only run on pre-commit
-
-
+  - repo: local
+    hooks:
+     -   id: check-vscode-extension-sync
+         name: Check VSCode Extension Sync
+         entry: uv run --with-editable . scripts/check_extension_sync.py
+         language: system
+         types: [json]
 # Global Exclusion
 # If you want to exclude py_launch_blueprint/_version.py from all pre-commit hooks,
 # you can use a global exclusion at the top level of your configuration:
@@ -62,7 +67,7 @@ repos:
 #   rev: v4.4.0
 #   hooks:
 #   - id: end-of-file-fixer
-
+#
 # Hook-Level Exclusion (Recommended Approach)
 # For your specific case where the end-of-file-fixer hook is modifying
 # py_launch_blue/print_version.py, the most targeted solution is to add an exclusion
diff --git a/Justfile b/Justfile
index bde43efc..87e0a168 100644
--- a/Justfile
+++ b/Justfile
@@ -628,5 +628,9 @@ clean-pr-to-testrepo new_repo_name="test-actions-repo":
     # just build
     # just run
 
+# Check if VSCode recommended extensions are synced with devcontainer
+check-extension-sync:
+    uv run --with-editable . scripts/check_extension_sync.py
+
 # Alias for dev (full developer cycle: format → lint → test → build)
 alias cycle := dev
diff --git a/scripts/check_extension_sync.py b/scripts/check_extension_sync.py
new file mode 100644
index 00000000..152d1872
--- /dev/null
+++ b/scripts/check_extension_sync.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+
+import json
+import sys
+from pathlib import Path
+from typing import Any
+
+EXTENSIONS_FILE = Path(".vscode/extensions.json")
+DEVCONTAINER_FILE = Path(".devcontainer/devcontainer.json")
+
+
+def load_json(file_path: Path) -> dict[str, Any]:
+    try:
+        with open(file_path) as f:
+            return json.load(f)  # type: ignore
+    except FileNotFoundError:
+        print(f"Error: {file_path} not found.")
+        sys.exit(2)
+    except json.JSONDecodeError as e:
+        print(f"Error parsing {file_path}: {e}")
+        sys.exit(2)
+
+
+def extract_recommended_extensions(data: dict[str, Any]) -> set[str]:
+    return set(data.get("recommendations", []))
+
+
+def extract_devcontainer_extensions(data: dict[str, Any]) -> set[str]:
+    try:
+        return {
+            ext if isinstance(ext, str) else ext["id"]
+            for ext in data["customizations"]["vscode"]["extensions"]
+        }
+    except KeyError:
+        return set()
+
+
+def main() -> None:
+    vscode_data = load_json(EXTENSIONS_FILE)
+    devcontainer_data = load_json(DEVCONTAINER_FILE)
+
+    vscode_exts = extract_recommended_extensions(vscode_data)
+    dev_exts = extract_devcontainer_extensions(devcontainer_data)
+
+    missing = vscode_exts - dev_exts
+
+    if missing:
+        print("VSCode extensions not synced with devcontainer configuration!\n")
+        print("Missing from .devcontainer/devcontainer.json:")
+        for ext in sorted(missing):
+            print(f"- {ext}")
+        print(
+            "\nTo fix: Add these extensions to the "
+            "`customizations.vscode.extensions` array in "
+            "`.devcontainer/devcontainer.json`"
+        )
+        sys.exit(1)
+
+    print("VSCode extensions are in sync.")
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()