diff --git a/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/get_user_auth_details.rs b/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/get_user_auth_details.rs
new file mode 100644
index 0000000000..8b970b1432
--- /dev/null
+++ b/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/get_user_auth_details.rs
@@ -0,0 +1,142 @@
+use crate::creds::seedance2pro_session::Seedance2ProSession;
+use crate::error::seedance2pro_client_error::Seedance2ProClientError;
+use crate::error::seedance2pro_error::Seedance2ProError;
+use crate::error::seedance2pro_generic_api_error::Seedance2ProGenericApiError;
+use crate::requests::get_user_auth_details::request_types::*;
+use crate::requests::kinovi_host::{KinoviHost, resolve_host};
+use crate::utils::common_headers::FIREFOX_USER_AGENT;
+use log::info;
+use wreq::Client;
+use wreq_util::Emulation;
+
+// --- Args & response ---
+
+pub struct GetUserAuthDetailsArgs<'a> {
+  pub session: &'a Seedance2ProSession,
+
+  /// Override the default host (kinovi.ai).
+  pub host_override: Option<KinoviHost>,
+}
+
+#[derive(Debug)]
+pub struct GetUserAuthDetailsResponse {
+  pub email: String,
+  pub credits: u64,
+  pub available_credits: u64,
+}
+
+// --- Implementation ---
+
+/// The tRPC `input` query param for `auth.user` — a static null payload.
+const AUTH_USER_INPUT: &str =
+  r#"{"0":{"json":null,"meta":{"values":["undefined"],"v":1}}}"#;
+
+pub async fn get_user_auth_details(
+  args: GetUserAuthDetailsArgs<'_>,
+) -> Result<GetUserAuthDetailsResponse, Seedance2ProError> {
+  let host = resolve_host(args.host_override.as_ref());
+  let base_url = host.api_base_url();
+  let url = format!("{}/api/trpc/auth.user", base_url);
+
+  info!("Fetching user auth details...");
+
+  let client = Client::builder()
+    .emulation(Emulation::Firefox143)
+    .build()
+    .map_err(|err| Seedance2ProClientError::WreqClientError(err))?;
+
+  let cookie = args.session.cookies.as_str();
+  let referer = format!("{}/pricing", base_url);
+
+  let request = client.get(&url)
+    .query(&[("batch", "1"), ("input", AUTH_USER_INPUT)])
+    .header("User-Agent", FIREFOX_USER_AGENT)
+    .header("Accept", "*/*")
+    .header("Accept-Language", "en-US,en;q=0.9")
+    .header("Accept-Encoding", "gzip, deflate, br, zstd")
+    .header("Referer", &referer)
+    .header("content-type", "application/json")
+    .header("x-trpc-source", "client")
+    .header("Connection", "keep-alive")
+    .header("Cookie", cookie)
+    .header("Sec-Fetch-Dest", "empty")
+    .header("Sec-Fetch-Mode", "cors")
+    .header("Sec-Fetch-Site", "same-origin")
+    .header("Priority", "u=4")
+    .header("TE", "trailers")
+    .build()
+    .map_err(|err| Seedance2ProClientError::WreqClientError(err))?;
+
+  let response = client.execute(request)
+    .await
+    .map_err(|err| Seedance2ProGenericApiError::WreqError(err))?;
+
+  let status = response.status();
+  let response_body = response.text()
+    .await
+    .map_err(|err| Seedance2ProGenericApiError::WreqError(err))?;
+
+  info!("Get user auth details response status: {}", status);
+
+  if !status.is_success() {
+    return Err(Seedance2ProGenericApiError::UncategorizedBadResponseWithStatusAndBody {
+      status_code: status,
+      body: response_body,
+    }.into());
+  }
+
+  let batch_response: Vec<BatchResponseItem> = serde_json::from_str(&response_body)
+    .map_err(|err| Seedance2ProGenericApiError::SerdeResponseParseErrorWithBody(
+      err,
+      response_body.clone(),
+    ))?;
+
+  let json = batch_response
+    .into_iter()
+    .next()
+    .ok_or_else(|| Seedance2ProGenericApiError::UncategorizedBadResponse(
+      "Empty batch response array".to_string()
+    ))?
+    .result
+    .data
+    .json;
+
+  info!("User: {}, credits: {}, available: {}", json.email, json.credits, json.available_credits);
+
+  Ok(GetUserAuthDetailsResponse {
+    email: json.email,
+    credits: json.credits,
+    available_credits: json.available_credits,
+  })
+}
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+  use crate::creds::seedance2pro_session::Seedance2ProSession;
+  use crate::test_utils::get_test_cookies::get_test_cookies;
+  use crate::test_utils::setup_test_logging::setup_test_logging;
+  use errors::AnyhowResult;
+  use log::LevelFilter;
+
+  fn test_session() -> AnyhowResult<Seedance2ProSession> {
+    let cookies = get_test_cookies()?;
+    Ok(Seedance2ProSession::from_cookies_string(cookies))
+  }
+
+  #[tokio::test]
+  #[ignore] // manually test — requires real cookies
+  async fn test_get_user_auth_details() -> AnyhowResult<()> {
+    setup_test_logging(LevelFilter::Trace);
+    let session = test_session()?;
+    let result = get_user_auth_details(GetUserAuthDetailsArgs {
+      session: &session,
+      host_override: None,
+    }).await?;
+    println!("Email: {}", result.email);
+    println!("Credits: {}", result.credits);
+    println!("Available credits: {}", result.available_credits);
+    assert_eq!(1, 2); // NB: Intentional failure to inspect output.
+    Ok(())
+  }
+}
diff --git a/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/mod.rs b/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/mod.rs
new file mode 100644
index 0000000000..6277520a72
--- /dev/null
+++ b/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/mod.rs
@@ -0,0 +1,2 @@
+pub mod get_user_auth_details;
+mod request_types;
diff --git a/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/request_types.rs b/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/request_types.rs
new file mode 100644
index 0000000000..46412eaafd
--- /dev/null
+++ b/crates/api_clients/seedance2pro_client/src/requests/get_user_auth_details/request_types.rs
@@ -0,0 +1,24 @@
+use serde_derive::Deserialize;
+
+#[derive(Deserialize, Debug)]
+pub(super) struct BatchResponseItem {
+  pub result: BatchResponseResult,
+}
+
+#[derive(Deserialize, Debug)]
+pub(super) struct BatchResponseResult {
+  pub data: BatchResponseData,
+}
+
+#[derive(Deserialize, Debug)]
+pub(super) struct BatchResponseData {
+  pub json: RawUserAuthDetails,
+}
+
+#[derive(Deserialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub(super) struct RawUserAuthDetails {
+  pub email: String,
+  pub credits: u64,
+  pub available_credits: u64,
+}
diff --git a/crates/api_clients/seedance2pro_client/src/requests/mod.rs b/crates/api_clients/seedance2pro_client/src/requests/mod.rs
index 767c04fc68..0559c195e4 100644
--- a/crates/api_clients/seedance2pro_client/src/requests/mod.rs
+++ b/crates/api_clients/seedance2pro_client/src/requests/mod.rs
@@ -1,5 +1,6 @@
 pub mod generate_character;
 pub mod generate_video;
+pub mod get_user_auth_details;
 pub mod kinovi_host;
 pub mod poll_characters;
 pub mod poll_orders;