diff --git a/Cargo.lock b/Cargo.lock
index 3f013c7..f9f0a20 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,241 @@
 # It is not intended for manual editing.
 version = 3
 
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+ "serde",
+]
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 [[package]]
 name = "kordophone"
 version = "0.1.0"
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+ "async-trait",
+ "serde",
+ "serde_json",
+ "time",
+ "uuid",
+]
+
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+ "time-core",
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+ "getrandom",
+ "rand",
+ "uuid-macro-internal",
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
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+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/kordophone/Cargo.toml b/kordophone/Cargo.toml
index 7d1a124..f604194 100644
--- a/kordophone/Cargo.toml
+++ b/kordophone/Cargo.toml
@@ -6,3 +6,8 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+async-trait = "0.1.80"
+serde = { version = "1.0.152", features = ["derive"] }
+serde_json = "1.0.91"
+time = { version = "0.3.17", features = ["parsing", "serde"] }
+uuid = { version = "1.6.1", features = ["v4", "fast-rng", "macro-diagnostics"] }
diff --git a/kordophone/src/api/mod.rs b/kordophone/src/api/mod.rs
index 1e2553d..c5b2ac8 100644
--- a/kordophone/src/api/mod.rs
+++ b/kordophone/src/api/mod.rs
@@ -1,12 +1,14 @@
+use async_trait::async_trait;
+pub use crate::model::Conversation;
 
+#[async_trait]
 pub trait APIInterface {
-    fn version(&self) -> String;
+    type Error;
+
+    // (GET) /version
+    async fn get_version(&self) -> Result<String, Self::Error>;
+    
+    // (GET) /conversations
+    async fn get_conversations(&self) -> Result<Vec<Conversation>, Self::Error>;
 }
 
-pub struct TestClient {}
-
-impl APIInterface for TestClient {
-    fn version(&self) -> String {
-        return "KordophoneTest-1.0".to_string()
-    }
-}
diff --git a/kordophone/src/lib.rs b/kordophone/src/lib.rs
index 203b1a5..c0ba5bc 100644
--- a/kordophone/src/lib.rs
+++ b/kordophone/src/lib.rs
@@ -1,16 +1,7 @@
 mod api;
 
-pub use self::api::TestClient;
+pub mod model;
 pub use self::api::APIInterface;
 
 #[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_version() {
-        let client = TestClient{};
-        let version = client.version();
-        assert_eq!(version, "KordophoneTest-1.0");
-    }
-}
+pub mod tests;
diff --git a/kordophone/src/model/conversation.rs b/kordophone/src/model/conversation.rs
new file mode 100644
index 0000000..fdca656
--- /dev/null
+++ b/kordophone/src/model/conversation.rs
@@ -0,0 +1,86 @@
+use serde::Deserialize;
+use time::OffsetDateTime;
+use uuid::Uuid;
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct Conversation {
+    pub guid: String,
+
+    #[serde(with = "time::serde::iso8601")]
+    pub date: OffsetDateTime,
+
+    #[serde(rename = "unreadCount")]
+    pub unread_count: i32,
+
+    #[serde(rename = "lastMessagePreview")]
+    pub last_message_preview: Option<String>,
+
+    #[serde(rename = "participantDisplayNames")]
+    pub participant_display_names: Vec<String>,
+
+    #[serde(rename = "displayName")]
+    pub display_name: Option<String>,
+}
+
+impl Conversation {
+    pub fn builder() -> ConversationBuilder {
+        ConversationBuilder::new()
+    }
+}
+
+#[derive(Default)]
+pub struct ConversationBuilder {
+    guid: Option<String>,
+    date: Option<OffsetDateTime>,
+    unread_count: Option<i32>,
+    last_message_preview: Option<String>,
+    participant_display_names: Option<Vec<String>>,
+    display_name: Option<String>,
+}
+
+impl ConversationBuilder {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn guid(mut self, guid: String) -> Self {
+        self.guid = Some(guid);
+        self
+    }
+
+    pub fn date(mut self, date: OffsetDateTime) -> Self {
+        self.date = Some(date);
+        self
+    }
+
+    pub fn unread_count(mut self, unread_count: i32) -> Self {
+        self.unread_count = Some(unread_count);
+        self
+    }
+
+    pub fn last_message_preview(mut self, last_message_preview: String) -> Self {
+        self.last_message_preview = Some(last_message_preview);
+        self
+    }
+
+    pub fn participant_display_names(mut self, participant_display_names: Vec<String>) -> Self {
+        self.participant_display_names = Some(participant_display_names);
+        self
+    }
+
+    pub fn display_name<T>(mut self, display_name: T) -> Self where T: Into<String> {
+        self.display_name = Some(display_name.into());
+        self
+    }
+
+    pub fn build(self) -> Conversation {
+        Conversation {
+            guid: self.guid.unwrap_or(Uuid::new_v4().to_string()),
+            date: self.date.unwrap_or(OffsetDateTime::now_utc()),
+            unread_count: self.unread_count.unwrap_or(0),
+            last_message_preview: self.last_message_preview,
+            participant_display_names: self.participant_display_names.unwrap_or(vec![]),
+            display_name: self.display_name,
+        }
+    }
+}
diff --git a/kordophone/src/model/mod.rs b/kordophone/src/model/mod.rs
new file mode 100644
index 0000000..291ac75
--- /dev/null
+++ b/kordophone/src/model/mod.rs
@@ -0,0 +1,3 @@
+
+pub mod conversation;
+pub use conversation::Conversation;
diff --git a/kordophone/src/tests/mod.rs b/kordophone/src/tests/mod.rs
new file mode 100644
index 0000000..07f905c
--- /dev/null
+++ b/kordophone/src/tests/mod.rs
@@ -0,0 +1,22 @@
+mod test_client;
+use self::test_client::TestClient;
+use crate::APIInterface;
+
+pub mod api_interface {
+    use super::*;
+    
+    #[test]
+    fn test_version() {
+        let client = TestClient{};
+        let version = client.get_version();
+        assert_eq!(version, "KordophoneTest-1.0");
+    }
+
+    #[test]
+    fn test_conversations() {
+        let client = TestClient{};
+        let conversations = client.get_conversations();
+        assert_eq!(conversations.len(), 1);
+        assert_eq!(conversations[0].display_name, Some("Test Conversation".to_string()));
+    }
+}
\ No newline at end of file
diff --git a/kordophone/src/tests/test_client.rs b/kordophone/src/tests/test_client.rs
new file mode 100644
index 0000000..7a50cef
--- /dev/null
+++ b/kordophone/src/tests/test_client.rs
@@ -0,0 +1,16 @@
+pub use crate::APIInterface;
+use crate::model::Conversation;
+
+pub struct TestClient {}
+
+impl APIInterface for TestClient {
+    fn get_version(&self) -> String {
+        return "KordophoneTest-1.0".to_string()
+    }
+
+    fn get_conversations(&self) -> Vec<Conversation> {
+        let mut conversations = Vec::new();
+        conversations.push(Conversation::builder().display_name("Test Conversation").build());
+        conversations
+    }
+}