diff --git a/advent_of_code/__init__.py b/advent_of_code/__init__.py
new file mode 100644
index 0000000..cdd5712
--- /dev/null
+++ b/advent_of_code/__init__.py
@@ -0,0 +1,4 @@
+"My solutions to Advent of Code 2023"
+
+__author__ = "Nettika <nettika@leaf.ninja>"
+__version__ = "1.0.0"
diff --git a/advent_of_code/__main__.py b/advent_of_code/__main__.py
new file mode 100644
index 0000000..1528ab2
--- /dev/null
+++ b/advent_of_code/__main__.py
@@ -0,0 +1,67 @@
+import time
+from argparse import ArgumentParser
+
+import requests
+
+from advent_of_code import __version__
+from advent_of_code.solver import Solver
+
+solvers: dict[int, Solver] = {}
+
+
+def main():
+    # Parse CLI arguments
+    parser = ArgumentParser(prog="Advent of Code 2023 Solver")
+    parser.add_argument(
+        "--session",
+        "-s",
+        required=True,
+        help="Session token",
+    )
+    parser.add_argument(
+        "--day",
+        "-d",
+        required=True,
+        type=int,
+        help="Day of the month to solve",
+    )
+    parser.add_argument(
+        "--version",
+        action="version",
+        version=f"%(prog)s {__version__}",
+    )
+    args = parser.parse_args()
+
+    # Validate day number
+    if args.day > 30 or args.day < 0:
+        print("Invalid day number")
+        exit(1)
+
+    # Fetch input for the day
+    print(f"Fetching Day {args.day} Input...")
+    with requests.get(
+        f"https://adventofcode.com/2023/day/{args.day}/input",
+        cookies={"session": args.session},
+    ) as response:
+        if not response.ok:
+            print("Unable to fetch input. Check your session token.")
+            exit(1)
+        input = response.text.strip()
+
+    # Resolve solver
+    solver = solvers.get(args.day)
+    if not solver:
+        print(f"No solver for day {args.day}")
+        exit(1)
+
+    # Execute solvers
+    print(f"Solving day {args.day}'s puzzle")
+    start = time.time()
+    print("Part 1 -", solver.solve_part_1(input))
+    print("Part 2 -", solver.solve_part_2(input))
+    end = time.time()
+    print(f"Solved in {end-start:,} seconds.")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/advent_of_code/solver.py b/advent_of_code/solver.py
new file mode 100644
index 0000000..2f1bdc0
--- /dev/null
+++ b/advent_of_code/solver.py
@@ -0,0 +1,11 @@
+from abc import ABC, abstractmethod
+
+
+class Solver(ABC):
+    @abstractmethod
+    def solve_part_1(self, input: str) -> None:
+        pass
+
+    @abstractmethod
+    def solve_part_2(self, input: str) -> None:
+        pass
diff --git a/pyproject.toml b/pyproject.toml
index 7a07167..1a17cc6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,14 @@
 [build-system]
 requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
 
 [project]
-name = "advent-of-code"
+name = "advent_of_code"
 version = "0.1.0"
-dependencies = ["pytest"]
+dependencies = ["requests"]
+
+[project.optional-dependencies]
+test = ["pytest", "types-requests"]
+
+[project.scripts]
+advent-of-code-2023 = "advent_of_code.__main__:main"