diff --git a/Cargo.lock b/Cargo.lock
index def3228..178b41a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,26 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi",
+]
+
+[[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 = "1.0.1"
@@ -32,6 +52,22 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[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",
+ "yaml-rust",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.1"
@@ -52,6 +88,7 @@ checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 name = "deepl"
 version = "0.1.0"
 dependencies = [
+ "clap",
  "hyper",
  "hyper-tls",
  "serde",
@@ -627,6 +664,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "strsim"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+
 [[package]]
 name = "syn"
 version = "1.0.76"
@@ -652,6 +695,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "textwrap"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "tokio"
 version = "1.11.0"
@@ -739,6 +791,12 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
+[[package]]
+name = "unicode-width"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"
@@ -751,6 +809,12 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
 [[package]]
 name = "want"
 version = "0.3.0"
@@ -788,3 +852,9 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "yaml-rust"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e66366e18dc58b46801afbf2ca7661a9f59cc8c5962c29892b6039b4f86fa992"
diff --git a/Cargo.toml b/Cargo.toml
index 02d9000..3381dbe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,8 @@
 name = "deepl"
 version = "0.1.0"
 edition = "2018"
+license = "MIT OR Apache-2.0"
+authors = ["Mathias Rothenhäusler <safemind@posteo.net"]
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
@@ -10,4 +12,5 @@ hyper-tls = "^0.5.0"
 hyper = { version = "0.14", features = ["full"] }
 tokio = { version = "1", features = ["full"] }
 serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0"
\ No newline at end of file
+serde_json = "1.0"
+clap = {version = "~2.33.0", features = ["yaml"]}
\ No newline at end of file
diff --git a/src/cli.yml b/src/cli.yml
new file mode 100644
index 0000000..0ada730
--- /dev/null
+++ b/src/cli.yml
@@ -0,0 +1,27 @@
+name: deepl
+version: "1.0"
+author: Mathias Rothenhaeusler <safemind@posteo.net>
+about: Cli API for deepl translations.
+args:
+    - source:
+        short: s
+        long: source
+        value_name: source_lang
+        help: The language you want to translate.
+        takes_value: true
+        required: false
+    - target:
+        short: t
+        long: target
+        value_name: target_lang
+        help: The language your text should be tranlated to.
+        takes_value: true
+        required: false
+    - file:
+        short: f
+        long: file
+        desc: File you want to translate.
+        help: Csv delimiter character
+        required: false
+        takes_value: true   
+
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..36a5c63
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,34 @@
+pub mod deepl_helper {
+    use clap::ArgMatches;
+
+    pub struct Params {
+        source_lang: String,
+        destination_lang: String,
+        file: String,
+    }
+
+    impl Params {
+        pub fn new_from_matches(matches: ArgMatches) -> Self {
+            Self {
+                source_lang: matches.value_of("source_lang").unwrap_or("EN").to_string(),
+                destination_lang: matches
+                    .value_of("destination_lang")
+                    .unwrap_or("DE")
+                    .to_string(),
+                file: matches.value_of("file").unwrap_or_default().to_string(),
+            }
+        }
+
+        pub fn source(&self) -> &String {
+            &self.source_lang
+        }
+
+        pub fn dest(&self) -> &String {
+            &self.destination_lang
+        }
+
+        pub fn file(&self) -> &String {
+            &self.file
+        }
+    }
+}