diff --git a/Cargo.lock b/Cargo.lock
index 5044cbb..1f70db2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3060,6 +3060,7 @@ dependencies = [
  "tracing",
  "tracing-subscriber",
  "ubisync-lib",
+ "ubisync-sdk",
  "uuid",
 ]
 
@@ -3088,6 +3089,15 @@ dependencies = [
 [[package]]
 name = "ubisync-sdk"
 version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "tracing",
+ "tracing-subscriber",
+ "ubisync-lib",
+]
 
 [[package]]
 name = "ucd-trie"
diff --git a/Cargo.toml b/Cargo.toml
index d0b8d62..d7a187f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 
 members = [
     "ubisync",
diff --git a/ubisync-lib/Cargo.toml b/ubisync-lib/Cargo.toml
index 2852b3d..2131140 100644
--- a/ubisync-lib/Cargo.toml
+++ b/ubisync-lib/Cargo.toml
@@ -10,6 +10,7 @@ axum = { version = "0.7.2", features = [ "macros" ] }
 chrono = "0.4.31"
 itertools = "0.12.0"
 jsonwebtoken = "9.2.0"
+reqwest = "0.11.23"
 serde = { version = "1.0.166", features = [ "derive" ] }
 serde_json = "1.0.99"
 serde_with = "3.3.0"
diff --git a/ubisync-lib/src/api/app.rs b/ubisync-lib/src/api/app.rs
new file mode 100644
index 0000000..eebcb05
--- /dev/null
+++ b/ubisync-lib/src/api/app.rs
@@ -0,0 +1,28 @@
+use reqwest::Method;
+use serde::{Serialize, Deserialize};
+
+use super::UbisyncRequest;
+
+
+#[derive(Serialize, Deserialize)]
+pub struct AppRegisterRequest {
+    pub name: String,
+    pub description: String,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct AppRegisterResponse {
+    pub token: String,
+}
+
+impl UbisyncRequest for AppRegisterRequest {
+    type PathParameters = ();
+    type Response = AppRegisterResponse;
+
+    fn method(&self) -> reqwest::Method {
+        Method::PUT
+    }
+    fn path(&self, _: Self::PathParameters) -> String {
+        "/app/register".to_string()
+    }
+}
\ No newline at end of file
diff --git a/ubisync-lib/src/api/element.rs b/ubisync-lib/src/api/element.rs
new file mode 100644
index 0000000..782df42
--- /dev/null
+++ b/ubisync-lib/src/api/element.rs
@@ -0,0 +1,88 @@
+use reqwest::Method;
+use serde::{Serialize, Deserialize};
+
+use crate::types::{ElementContent, ElementId, Element};
+
+use super::UbisyncRequest;
+
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementCreateRequest {
+    pub content: ElementContent,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementCreateResponse {
+    pub id: ElementId,
+}
+
+impl UbisyncRequest for ElementCreateRequest {
+    type PathParameters = ();
+    type Response = ElementCreateResponse;
+
+    fn method(&self) -> Method {
+        Method::PUT
+    }
+    fn path(&self, _: Self::PathParameters) -> String {
+        "/element".to_string()
+    }
+}
+
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementGetRequest;
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementGetResponse {
+    pub element: Element,
+}
+
+impl UbisyncRequest for ElementGetRequest {
+    type PathParameters = ElementId;
+    type Response = ElementGetResponse;
+
+    fn method(&self) -> Method {
+        Method::GET
+    }
+    fn path(&self, params: Self::PathParameters) -> String {
+        format!("/element/{}", params.to_string())
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementSetRequest {
+    pub content: ElementContent,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementSetResponse;
+
+impl UbisyncRequest for ElementSetRequest {
+    type PathParameters = ElementId;
+    type Response = ElementSetResponse;
+
+    fn method(&self) -> Method {
+        Method::POST
+    }
+    fn path(&self, params: Self::PathParameters) -> String {
+        format!("/element/{}", serde_json::to_string(&params).unwrap())
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementRemoveRequest;
+
+#[derive(Serialize, Deserialize)]
+pub struct ElementRemoveResponse;
+
+impl UbisyncRequest for ElementRemoveRequest {
+    type PathParameters = ElementId;
+    type Response = ElementRemoveResponse;
+    
+    fn method(&self) -> Method {
+        Method::DELETE
+    }
+    fn path(&self, params: Self::PathParameters) -> String {
+        format!("/element/{}", serde_json::to_string(&params).unwrap())
+    }
+}
\ No newline at end of file
diff --git a/ubisync-lib/src/api/mod.rs b/ubisync-lib/src/api/mod.rs
new file mode 100644
index 0000000..13ba5a7
--- /dev/null
+++ b/ubisync-lib/src/api/mod.rs
@@ -0,0 +1,23 @@
+use async_trait::async_trait;
+use reqwest::Method;
+use serde::{Deserialize, Serialize};
+
+pub mod app;
+pub mod element;
+
+/// Any struct defining a request body for the ubisync API must implement this trait
+/// It is used both by the client in the SDK and by the API logic in the ubisync node
+#[async_trait]
+pub trait UbisyncRequest: for<'de> Deserialize<'de> + Serialize {
+    type PathParameters;
+    type Response: for<'de> Deserialize<'de> + Serialize;
+
+    fn method(&self) -> Method;
+    fn path(&self, params: Self::PathParameters) -> String;
+    async fn parse_response(resp: reqwest::Response) -> Result<Self::Response, reqwest::Error>
+    where
+        for<'de> <Self as UbisyncRequest>::Response: Deserialize<'de>,
+    {
+        resp.json().await
+    }
+}
diff --git a/ubisync-lib/src/lib.rs b/ubisync-lib/src/lib.rs
index 8ed7f46..b06f1fb 100644
--- a/ubisync-lib/src/lib.rs
+++ b/ubisync-lib/src/lib.rs
@@ -1,3 +1,4 @@
+pub mod api;
 pub mod messages;
-pub mod types;
 pub mod peer;
+pub mod types;
diff --git a/ubisync-sdk/Cargo.toml b/ubisync-sdk/Cargo.toml
index 244cf1c..1280caf 100644
--- a/ubisync-sdk/Cargo.toml
+++ b/ubisync-sdk/Cargo.toml
@@ -6,3 +6,11 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0.79"
+reqwest = { version = "0.11.23", features = [ "json" ] }
+serde = { version = "1.0.166", features = [ "derive" ] }
+serde_json = "1.0.99"
+tracing = "0.1.37"
+tracing-subscriber = "0.3.17"
+
+ubisync-lib = { path = "../ubisync-lib" }
\ No newline at end of file
diff --git a/ubisync-sdk/src/error.rs b/ubisync-sdk/src/error.rs
new file mode 100644
index 0000000..cbb3a0d
--- /dev/null
+++ b/ubisync-sdk/src/error.rs
@@ -0,0 +1,20 @@
+use std::fmt::Display;
+
+
+
+#[derive(Debug)]
+pub enum UbisyncError {
+    InvalidNodeReply(String),
+    AppRegistrationFailed,
+}
+
+impl Display for UbisyncError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::InvalidNodeReply(msg) => write!(f, "Invalid reply from ubisync node: {}", msg),
+            Self::AppRegistrationFailed => write!(f, "Registrating this app at the ubisync node failed."),
+        }
+    }
+}
+
+impl std::error::Error for UbisyncError {}
\ No newline at end of file
diff --git a/ubisync-sdk/src/lib.rs b/ubisync-sdk/src/lib.rs
index e69de29..e856329 100644
--- a/ubisync-sdk/src/lib.rs
+++ b/ubisync-sdk/src/lib.rs
@@ -0,0 +1,118 @@
+use anyhow::anyhow;
+use error::UbisyncError;
+use reqwest::{Client, StatusCode};
+use ubisync_lib::api::{
+    app::{AppRegisterRequest, AppRegisterResponse},
+    UbisyncRequest,
+};
+pub use ubisync_lib::*;
+
+pub mod error;
+
+pub struct UbisyncClient {
+    host: String,
+    port: u16,
+    selected_api_version: String,
+    base_url: String,
+    jwt_token: String,
+    reqwest_client: Client,
+}
+
+impl UbisyncClient {
+    pub async fn init(
+        host: &str,
+        port: u16,
+        jwt_token: Option<&str>,
+        application_name: &str,
+        application_description: &str,
+    ) -> Result<Self, UbisyncError> {
+        let http_client = Client::new();
+        let mut node_api_versions = http_client
+            .get(&format!("http://{}:{}/versions", host, port))
+            .send()
+            .await
+            .expect("Failed to contact ubisync node, it may be offline.")
+            .json::<Vec<String>>()
+            .await
+            .expect("Failed to read ubisync node's available API versions.");
+
+        node_api_versions.sort();
+        let selected_version = node_api_versions
+            .get(0)
+            .expect("No available API version returned by ubisync node");
+
+        let token = match jwt_token {
+            Some(t) => t.to_string(),
+            None => {
+                let response = http_client
+                    .put(Self::build_base_url(host, port, &selected_version) + "/app/register")
+                    .json(&AppRegisterRequest {
+                        name: application_name.to_string(),
+                        description: application_description.to_string(),
+                    })
+                    .send()
+                    .await
+                    .expect("App registration request failed.");
+                if response.status() != StatusCode::OK {
+                    return Err(UbisyncError::AppRegistrationFailed);
+                }
+                response
+                    .json::<AppRegisterResponse>()
+                    .await
+                    .expect("Failed to extract JWT from app regstration request")
+                    .token
+            }
+        };
+
+        Ok(UbisyncClient {
+            host: host.to_string(),
+            port: port,
+            selected_api_version: selected_version.to_string(),
+            base_url: Self::build_base_url(host, port, selected_version),
+            jwt_token: token.to_string(),
+            reqwest_client: http_client,
+        })
+    }
+
+    pub async fn send<R>(
+        &self,
+        request: R,
+        parameters: R::PathParameters,
+    ) -> anyhow::Result<R::Response>
+    where
+        R: UbisyncRequest,
+    {
+        self.reqwest_client
+            .request(
+                request.method(),
+                &(self.base_url.to_owned() + &request.path(parameters)),
+            )
+            .bearer_auth(&self.jwt_token)
+            .json(&request)
+            .send()
+            .await
+            .map_err(|e| anyhow!(e))?
+            .json::<R::Response>()
+            .await
+            .map_err(|e| anyhow!(e))
+    }
+
+    pub async fn set_host(&mut self, host: String) {
+        self.host = host;
+        self.base_url = Self::build_base_url(&self.host, self.port, &self.selected_api_version);
+    }
+
+    pub async fn set_port(&mut self, port: u16) {
+        self.port = port;
+        self.base_url = Self::build_base_url(&self.host, self.port, &self.selected_api_version);
+    }
+
+    pub async fn set_api_version(&mut self, version: String) {
+        self.selected_api_version = version;
+        self.base_url = Self::build_base_url(&self.host, self.port, &self.selected_api_version);
+    }
+
+    fn build_base_url(host: &str, port: u16, api_version: &str) -> String {
+        format!("http://{}:{}/{}", host, port, api_version)
+    }
+}
diff --git a/ubisync/Cargo.toml b/ubisync/Cargo.toml
index e447b1c..386ffdd 100644
--- a/ubisync/Cargo.toml
+++ b/ubisync/Cargo.toml
@@ -25,4 +25,5 @@ ubisync-lib = { path = "../ubisync-lib" }
 
 
 [dev-dependencies]
-reqwest = { version = "0.11.20", features = [ "json" ] }
\ No newline at end of file
+reqwest = { version = "0.11.20", features = [ "json" ] }
+ubisync-sdk = { path = "../ubisync-sdk" }
\ No newline at end of file
diff --git a/ubisync/src/api/mod.rs b/ubisync/src/api/mod.rs
index 40c999d..34db9dc 100644
--- a/ubisync/src/api/mod.rs
+++ b/ubisync/src/api/mod.rs
@@ -1,4 +1,4 @@
-use axum::Router;
+use axum::{Router, routing::get, response::{Response, IntoResponse}, http::StatusCode, Json};
 use tokio::{net::TcpListener, task::JoinHandle};
 
 use crate::{config::ApiConfig, state::ApiState};
@@ -44,6 +44,8 @@ impl From<ApiConfig> for ApiBuilder {
 impl ApiBuilder {
     pub async fn build(&self, state: ApiState) -> Api {
         let mut app: Router = Router::new();
+        app = app.route("/versions", get(list_available_versions));
+        
         match &self.version {
             Some(v) if v == "v0" => app = app.nest(&format!("/{}", v), v0::get_router(state)),
             _ => app = app.nest("/v0", v0::get_router(state)),
@@ -72,3 +74,8 @@ impl ApiBuilder {
         }
     }
 }
+
+
+async fn list_available_versions() -> Response {
+    (StatusCode::OK, Json {0: vec!["v0"]}).into_response()
+}
\ No newline at end of file
diff --git a/ubisync/src/api/v0/app.rs b/ubisync/src/api/v0/app.rs
index ddb12c0..f2eed7d 100644
--- a/ubisync/src/api/v0/app.rs
+++ b/ubisync/src/api/v0/app.rs
@@ -11,11 +11,11 @@ use axum::{
 use jsonwebtoken::{decode, Header};
 use serde::{Deserialize, Serialize};
 use tracing::{debug, error, warn};
+use ubisync_lib::api::app::{AppRegisterRequest, AppRegisterResponse};
 use uuid::Uuid;
 
 use crate::state::ApiState;
 
-
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct AppId(Uuid);
 
@@ -30,15 +30,6 @@ struct JWTClaims {
     sub: AppId,
 }
 
-
-
-#[derive(Serialize, Deserialize)]
-pub struct AppDescription {
-    pub name: String,
-    pub desc_text: String,
-}
-
-
 pub(super) async fn auth(
     s: Extension<Arc<ApiState>>,
     mut request: Request<Body>,
@@ -67,12 +58,12 @@ pub(super) async fn auth(
 
 pub(super) async fn register(
     s: Extension<Arc<ApiState>>,
-    Json(data): Json<AppDescription>,
+    Json(body): Json<AppRegisterRequest>,
 ) -> Response {
     // Maybe ask for consent by user
 
     // If user wants registration, proceed
-    let result = s.add_app(&data);
+    let result = s.add_app(&body.name, &body.description);
 
     match result {
         Ok(id) => {
@@ -83,7 +74,13 @@ pub(super) async fn register(
                 &s.jwt_encoding_key(),
             );
             match jwt {
-                Ok(token) => (StatusCode::OK, token).into_response(),
+                Ok(token) => (
+                    StatusCode::OK,
+                    Json {
+                        0: AppRegisterResponse { token: token },
+                    },
+                )
+                    .into_response(),
                 Err(e) => {
                     warn!("Failed to encode token: {:?}", e);
                     StatusCode::INTERNAL_SERVER_ERROR.into_response()
diff --git a/ubisync/src/api/v0/element.rs b/ubisync/src/api/v0/element.rs
index 04905e9..ba80d47 100644
--- a/ubisync/src/api/v0/element.rs
+++ b/ubisync/src/api/v0/element.rs
@@ -6,17 +6,28 @@ use axum::{
     response::{IntoResponse, Response},
     Extension,
 };
-use tracing::{debug, warn};
+use tracing::debug;
 
 use crate::state::ApiState;
-use ubisync_lib::types::{ElementContent, ElementId};
+use ubisync_lib::{
+    api::element::{
+        ElementCreateRequest, ElementCreateResponse, ElementGetResponse, ElementSetRequest,
+        ElementSetResponse, ElementRemoveResponse,
+    },
+    types::ElementId,
+};
 
 pub(super) async fn get(Path(id): Path<ElementId>, s: Extension<Arc<ApiState>>) -> Response {
     let element = s.get_element(&id);
     match element {
-        Ok(el) => (StatusCode::OK, Json { 0: el }).into_response(),
-        Err(e) => {
-            warn!("Element not found:\n{:?}", e);
+        Ok(el) => (
+            StatusCode::OK,
+            Json {
+                0: ElementGetResponse { element: el },
+            },
+        )
+            .into_response(),
+        Err(_) => {
             StatusCode::NOT_FOUND.into_response()
         }
     }
@@ -24,15 +35,15 @@ pub(super) async fn get(Path(id): Path<ElementId>, s: Extension<Arc<ApiState>>)
 
 pub(super) async fn create(
     s: Extension<Arc<ApiState>>,
-    Json(content): Json<ElementContent>,
+    Json(req): Json<ElementCreateRequest>,
 ) -> Response {
-    let element_id = s.create_element(&content);
+    let element_id = s.create_element(&req.content);
     debug!("{:?}", element_id);
     match element_id {
         Ok(id) => (
             StatusCode::OK,
             Json {
-                0: &Into::<String>::into(&id),
+                0: ElementCreateResponse { id },
             },
         )
             .into_response(),
@@ -43,11 +54,17 @@ pub(super) async fn create(
 pub(super) async fn set(
     Path(id): Path<ElementId>,
     s: Extension<Arc<ApiState>>,
-    Json(content): Json<ElementContent>,
+    Json(req): Json<ElementSetRequest>,
 ) -> Response {
-    let res = s.write_element_content(&id, &content);
+    let res = s.write_element_content(&id, &req.content);
     match res {
-        Ok(_) => StatusCode::OK.into_response(),
+        Ok(_) => (
+            StatusCode::OK,
+            Json {
+                0: ElementSetResponse,
+            },
+        )
+            .into_response(),
         Err(_) => StatusCode::INTERNAL_SERVER_ERROR.into_response(),
     }
 }
@@ -55,7 +72,7 @@ pub(super) async fn set(
 pub(super) async fn remove(Path(id): Path<ElementId>, s: Extension<Arc<ApiState>>) -> Response {
     let res = s.remove_element(&id);
     match res {
-        Ok(_) => StatusCode::OK.into_response(),
+        Ok(_) => (StatusCode::OK, Json { 0: ElementRemoveResponse }).into_response(),
         Err(_) => StatusCode::INTERNAL_SERVER_ERROR.into_response(),
     }
 }
diff --git a/ubisync/src/state/api_state.rs b/ubisync/src/state/api_state.rs
index 5dbaac9..4b33748 100644
--- a/ubisync/src/state/api_state.rs
+++ b/ubisync/src/state/api_state.rs
@@ -6,7 +6,7 @@ use jsonwebtoken::{DecodingKey, EncodingKey, Validation};
 use tracing::debug;
 use ubisync_lib::{types::{ElementContent, ElementId, Element}, messages::MessageContent};
 
-use crate::{api::v0::app::{AppDescription, AppId}, state::queries};
+use crate::{api::v0::app::AppId, state::queries};
 
 use super::State;
 
@@ -29,15 +29,15 @@ impl ApiState {
         }
     }
 
-    pub fn add_app(&self, description: &AppDescription) -> anyhow::Result<AppId> {
+    pub fn add_app(&self, name: &str, description: &str) -> anyhow::Result<AppId> {
         let id = AppId::new();
         let last_access = Utc::now();
         queries::apps::add(
             self.db(),
             &id,
             &last_access,
-            &description.name,
-            &description.desc_text,
+            name,
+            description,
         )?;
         debug!("Successfully added app");
 
diff --git a/ubisync/tests/api.rs b/ubisync/tests/api.rs
index 765930c..367d389 100644
--- a/ubisync/tests/api.rs
+++ b/ubisync/tests/api.rs
@@ -1,9 +1,12 @@
 use std::time::Duration;
 
-use tracing::{debug, Level};
-use ubisync::{config::Config, Ubisync, api::v0::app::AppDescription};
-use ubisync_lib::types::{ElementContent, ElementId, Element};
-
+use tracing::{debug, warn, Level};
+use ubisync::{config::Config, Ubisync};
+use ubisync_lib::{
+    api::element::{ElementCreateRequest, ElementGetRequest},
+    types::{Element, ElementContent},
+};
+use ubisync_sdk::UbisyncClient;
 
 #[tokio::test(flavor = "multi_thread")]
 async fn two_nodes_element_creation() {
@@ -11,6 +14,7 @@ async fn two_nodes_element_creation() {
         .pretty()
         .with_max_level(Level::DEBUG)
         .init();
+
     // Two nodes need to bind to different ports
     let mut c2 = Config::default();
     c2.api_config.port = Some(9982);
@@ -19,63 +23,35 @@ async fn two_nodes_element_creation() {
     ubi1.add_peer_from_id(ubi2.get_destination().unwrap().into())
         .unwrap();
 
-    let http_client = reqwest::Client::new();
-    let register_response = http_client
-        .put("http://localhost:9981/v0/app/register")
-        .json(&AppDescription {
-            name: "Test".to_string(),
-            desc_text: "desc".to_string(),
-        })
-        .send()
+    let api_client1 = UbisyncClient::init("localhost", 9981, None, "App", "Long desc")
         .await
         .unwrap();
-    let jwt1 = register_response
-        .text()
-        .await
-        .expect("Couldn't fetch token from response");
-    let register_response = http_client
-        .put("http://localhost:9982/v0/app/register")
-        .json(&AppDescription {
-            name: "Test".to_string(),
-            desc_text: "desc".to_string(),
-        })
-        .send()
+    let api_client2 = UbisyncClient::init("localhost", 9982, None, "App", "Long desc")
         .await
         .unwrap();
-    let jwt2 = register_response
-        .text()
-        .await
-        .expect("Couldn't fetch token from response");
 
     let test_element_content = ElementContent::Text("Text".to_string());
-    let put_resp = http_client
-        .put(&format!("http://localhost:9981/v0/element"))
-        .json(&test_element_content)
-        .header("Authorization", &format!("Bearer {}", &jwt1))
-        .send()
+    let create_resp = api_client1
+        .send(
+            ElementCreateRequest {
+                content: test_element_content.clone(),
+            },
+            (),
+        )
         .await
         .unwrap();
-    debug!("{:?}", &put_resp);
-    let put_resp_text = put_resp.text().await.expect("No put response body");
-    debug!("{}", put_resp_text);
-    let id =
-        serde_json::from_str::<ElementId>(&put_resp_text).expect("Could not deserialize ElementId");
+    let id = create_resp.id;
 
-    tokio::time::sleep(Duration::from_millis(3000)).await;
+    tokio::time::sleep(Duration::from_millis(1000)).await;
 
-    let get_resp = http_client
-        .get(&format!(
-            "http://localhost:9982/v0/element/{}",
-            Into::<String>::into(&id)
-        ))
-        .header("Authorization", &format!("Bearer {}", &jwt2))
-        .send()
-        .await
-        .expect("Get request failed");
-    let get_resp_text = get_resp.text().await.expect("No get request body");
-    debug!("{}", get_resp_text);
-    let received_element =
-        serde_json::from_str::<Element>(&get_resp_text).expect("Could not deserialize Element");
+    let mut get_resp = api_client2.send(ElementGetRequest {}, id.clone()).await;
+    while let Err(_) = get_resp {
+        warn!("Sleeping for another second, element has not arrived yet");
+        tokio::time::sleep(Duration::from_millis(1000)).await;
+        get_resp = api_client2.send(ElementGetRequest {}, id.clone()).await;
+    }
+
+    let received_element: Element = get_resp.unwrap().element;
     debug!("Other node received this element: {:?}", received_element);
 
     assert_eq!(&test_element_content, received_element.content());