diff --git a/Cargo.lock b/Cargo.lock
index dd57b04..f90ba64 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6,6 +6,15 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "async-compression"
 version = "0.3.7"
@@ -19,6 +28,17 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "autocfg"
 version = "0.1.7"
@@ -101,6 +121,21 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "clap"
+version = "2.33.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
+dependencies = [
+ "ansi_term",
+ "atty",
+ "bitflags",
+ "strsim",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
+]
+
 [[package]]
 name = "const_fn"
 version = "0.4.5"
@@ -1206,6 +1241,7 @@ name = "steamguard-cli"
 version = "0.2.0"
 dependencies = [
  "base64",
+ "clap",
  "hmac-sha1",
  "rand 0.7.3",
  "reqwest",
@@ -1217,6 +1253,12 @@ dependencies = [
  "text_io",
 ]
 
+[[package]]
+name = "strsim"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+
 [[package]]
 name = "subtle"
 version = "2.4.0"
@@ -1266,6 +1308,15 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6cb170b4f47dc48835fbc56259c12d8963e542b05a24be2e3a1f5a6c320fd2d4"
 
+[[package]]
+name = "textwrap"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.24"
@@ -1444,6 +1495,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-width"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.1"
@@ -1468,6 +1525,12 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b00bca6106a5e23f3eee943593759b7fcddb00554332e856d990c893966879fb"
 
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
 [[package]]
 name = "version_check"
 version = "0.9.3"
diff --git a/Cargo.toml b/Cargo.toml
index 654ae9c..4bd1ec1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,4 +16,5 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 rsa = "0.3"
 rand = "0.7.3" # rsa is not compatible with rand 0.8: https://github.com/RustCrypto/RSA/issues/81
-standback = "0.2.17" # required to fix a compilation error on a transient dependency
\ No newline at end of file
+standback = "0.2.17" # required to fix a compilation error on a transient dependency
+clap = "2.33.3"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 96a7f54..e3bcee3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,11 +4,54 @@ use steamguard_cli::*;
 use ::std::*;
 use text_io::read;
 use std::path::Path;
+use clap::{App, Arg, crate_version};
 
 mod steamapi;
 mod accountmanager;
 
 fn main() {
+	let matches = App::new("steamguard-cli")
+		.version(crate_version!())
+		.bin_name("steamguard")
+		.author("dyc3 (Carson McManus)")
+		.about("Generate Steam 2FA codes and confirm Steam trades from the command line.")
+		.arg(
+			Arg::with_name("username")
+				.long("username")
+				.short("u")
+				.help("Select the account you want by steam username. By default, the first account in the manifest is selected.")
+		)
+		.arg(
+			Arg::with_name("all")
+				.long("all")
+				.short("a")
+				.help("Select all accounts in the manifest.")
+		)
+		.arg(
+			Arg::with_name("mafiles-path")
+				.long("mafiles-path")
+				.short("m")
+				.default_value("~/maFiles")
+				.help("Specify which folder your maFiles are in.")
+		)
+		.arg(
+			Arg::with_name("passkey")
+				.long("passkey")
+				.short("p")
+				.help("Specify your encryption passkey.")
+		)
+		.subcommand(
+			App::new("trade")
+				.about("Interactive interface for trade confirmations")
+				.arg(
+					Arg::with_name("accept-all")
+					.short("a")
+					.long("accept-all")
+					.help("Accept all open trade confirmations. Does not open interactive interface.")
+				)
+		)
+		.get_matches();
+
 	println!("Hello, world!");
 
 	// let server_time = steamapi::get_server_time();