diff --git a/twiq/_env b/twiq/_env
new file mode 100644
index 00000000..17ab82d0
--- /dev/null
+++ b/twiq/_env
@@ -0,0 +1 @@
+TWITTER_BEARER_TOKEN=
diff --git a/twiq/crates/domain/src/lib.rs b/twiq/crates/domain/src/lib.rs
index 4285f218..6a4777c2 100644
--- a/twiq/crates/domain/src/lib.rs
+++ b/twiq/crates/domain/src/lib.rs
@@ -1,5 +1,7 @@
 #[cfg(test)]
 mod tests {
+    use reqwest::{Client, Method};
+
     #[tokio::test]
     async fn it_works() -> anyhow::Result<()> {
         #[derive(Debug, serde::Deserialize)]
@@ -11,4 +13,33 @@ mod tests {
         assert_eq!(json.date, "2022-08-07");
         Ok(())
     }
+
+    #[tokio::test]
+    async fn get_user() -> anyhow::Result<()> {
+        #[derive(Debug, serde::Deserialize, serde::Serialize)]
+        struct UserResponse {
+            data: UserResponseData,
+        }
+        #[derive(Debug, serde::Deserialize, serde::Serialize)]
+        struct UserResponseData {
+            id: String,
+            name: String,
+            username: String,
+        }
+
+        let bearer_token = std::env::var("TWITTER_BEARER_TOKEN")?;
+        let url = format!("https://api.twitter.com/2/users/by/username/{}", "bouzuya");
+        let response = Client::builder()
+            .build()?
+            .request(Method::GET, url)
+            .bearer_auth(bearer_token)
+            .send()
+            .await?;
+        let json: UserResponse = response.json().await?;
+        assert_eq!(json.data.id, "125962981");
+        assert_eq!(json.data.name, "bouzuya");
+        assert_eq!(json.data.username, "bouzuya");
+        assert_ne!(serde_json::to_string(&json)?, "");
+        Ok(())
+    }
 }