diff --git a/src/cli.py b/src/cli.py
new file mode 100644
--- /dev/null
+++ b/src/cli.py
@@ -0,0 +1,60 @@
+from argparse import ArgumentParser
+
+from shamira import generate, reconstruct
+
+
+def run():
+	parser=ArgumentParser()
+	subparsers=parser.add_subparsers()
+
+	buildSplitParser(subparsers.add_parser("split"))
+	buildJoinParser(subparsers.add_parser("join"))
+
+	parser.set_defaults(func=lambda: parser.error("missing command"))
+
+	args=parser.parse_args()
+	args.func(args)
+
+
+def buildSplitParser(parser):
+	parser.add_argument("-k",type=int,required=True,help="number of shares necessary for recovering the secret")
+	parser.add_argument("-n",type=int,required=True,help="number of generated shares")
+
+	encoding=parser.add_mutually_exclusive_group()
+	encoding.add_argument("--hex",action="store_true",help="encode shares' bytes as a hexadecimal string")
+	encoding.add_argument("--b32",action="store_true",help="encode shares' bytes as a base32 string")
+	encoding.add_argument("--b64",action="store_true",help="encode shares' bytes as a base64 string")
+
+	parser.add_argument("secret",help="secret to be parser")
+	parser.set_defaults(func=_generate)
+	
+
+def buildJoinParser(parser):
+	encoding=parser.add_mutually_exclusive_group()
+	encoding.add_argument("--hex",action="store_true",help="decode shares' bytes from a hexadecimal string")
+	encoding.add_argument("--b32",action="store_true",help="decode shares' bytes from a base32 string")
+	encoding.add_argument("--b64",action="store_true",help="decode shares' bytes from a base64 string")
+
+	parser.add_argument("-r","--raw",action="store_true",help="return secret as raw bytes")
+	parser.add_argument("share",nargs="+",help="shares to be joined")
+	parser.set_defaults(func=_reconstruct)
+
+
+def _generate(args):
+	encoding=getEncoding(args) or "b32"
+
+	shares=generate(args.secret,args.k,args.n,encoding)
+	for s in shares:
+		print(s)
+
+
+def _reconstruct(args):
+	encoding=getEncoding(args)
+	print(reconstruct(*args.share,encoding=encoding,raw=args.raw))
+
+
+def getEncoding(args):
+	if args.hex: return "hex"
+	elif args.b32: return "b32"
+	elif args.b64: return "b64"
+	else: return ""