diff --git a/src/apis/api_key_service_api.rs b/src/apis/api_key_service_api.rs
index 0e338e2..4a1a656 100644
--- a/src/apis/api_key_service_api.rs
+++ b/src/apis/api_key_service_api.rs
@@ -49,7 +49,13 @@ pub struct ValidateApiKeyParams {
 pub enum ApiKeyError {
     BadRequest(crate::models::BadUpdateOrgRequest),
     InvalidIntegrationAPIKey,
-    InvalidAPIKey,
+    InvalidAPIKey {
+        message: String,
+    },
+    RateLimited {
+        wait_seconds: f64,
+        user_facing_error: String,
+    },
     InvalidPersonalAPIKey,
     InvalidOrgAPIKey,
     NotFound,
@@ -58,6 +64,19 @@ pub enum ApiKeyError {
     UnexpectedExceptionWithSDK,
 }
 
+#[derive(Debug, Clone, Deserialize)]
+#[serde(untagged)]
+pub enum ApiKeyValidationErrorResponse {
+    InvalidEndUserApiKey {
+        api_key_token: String,
+    },
+    EndUserApiKeyRateLimited {
+        wait_seconds: f64,
+        error_code: String,
+        user_facing_error: String,
+    },
+}
+
 pub async fn fetch_current_api_keys(
     configuration: &configuration::Configuration,
     params: ApiKeyQueryParams,
@@ -340,11 +359,7 @@ pub async fn delete_api_key(
 pub async fn validate_api_key(
     configuration: &configuration::Configuration,
     params: ValidateApiKeyParams,
-) -> Result<crate::models::ValidateApiKeyResponse, Error<ApiKeyError>> {
-    if hex::decode(&params.api_key_token).is_err() {
-        return Err(Error::Params("Invalid API key ID format".to_string()));
-    }
-
+) -> Result<crate::models::ValidateApiKeyResponse, Error<ApiKeyValidationErrorResponse>> {
     let client = &configuration.client;
 
     let uri = format!(
@@ -371,7 +386,7 @@ pub async fn validate_api_key(
     if !status.is_client_error() && !status.is_server_error() {
         serde_json::from_str(&content).map_err(Error::from)
     } else {
-        let entity: Option<ApiKeyError> = serde_json::from_str(&content).ok();
+        let entity: Option<ApiKeyValidationErrorResponse> = serde_json::from_str(&content).ok();
         let error = ResponseContent {
             status,
             content,
diff --git a/src/propelauth/api_key.rs b/src/propelauth/api_key.rs
index 2e679a4..d22b31a 100644
--- a/src/propelauth/api_key.rs
+++ b/src/propelauth/api_key.rs
@@ -1,4 +1,4 @@
-use crate::apis::api_key_service_api::{ApiKeyError, ApiKeyQueryParams, CreateApiKeyParams, UpdateApiKeyParams, ValidateApiKeyParams};
+use crate::apis::api_key_service_api::{ApiKeyError, ApiKeyQueryParams, ApiKeyValidationErrorResponse, CreateApiKeyParams, UpdateApiKeyParams, ValidateApiKeyParams};
 use crate::apis::configuration::Configuration;
 use crate::models::{CreateApiKeyResponse, FetchApiKeyResponse, FetchApiKeysPagedResponse, ValidateApiKeyResponse};
 use crate::models::validate_api_key_response::{ValidateOrgApiKeyResponse, ValidatePersonalApiKeyResponse};
@@ -62,7 +62,7 @@ impl ApiKeyService<'_> {
                     ApiKeyError::UnexpectedExceptionWithSDK,
                     |status_code, _| match status_code.as_u16() {
                         401 => ApiKeyError::InvalidIntegrationAPIKey,
-                        404 => ApiKeyError::InvalidAPIKey,
+                        404 => ApiKeyError::NotFound,
                         _ => ApiKeyError::UnknownError,
                     },
                 )
@@ -94,7 +94,7 @@ impl ApiKeyService<'_> {
                     ApiKeyError::UnexpectedExceptionWithSDK,
                     |status_code, _| match status_code.as_u16() {
                         401 => ApiKeyError::InvalidIntegrationAPIKey,
-                        404 => ApiKeyError::InvalidAPIKey,
+                        404 => ApiKeyError::NotFound,
                         _ => ApiKeyError::UnknownError,
                     },
                 )
@@ -112,7 +112,7 @@ impl ApiKeyService<'_> {
                     ApiKeyError::UnexpectedExceptionWithSDK,
                     |status_code, _| match status_code.as_u16() {
                         401 => ApiKeyError::InvalidIntegrationAPIKey,
-                        404 => ApiKeyError::InvalidAPIKey,
+                        404 => ApiKeyError::NotFound,
                         _ => ApiKeyError::UnknownError,
                     },
                 )
@@ -121,17 +121,41 @@ impl ApiKeyService<'_> {
         Ok(())
     }
 
-    pub async fn validate_api_key(&self, params: ValidateApiKeyParams) -> Result<ValidateApiKeyResponse, ApiKeyError> {
+    pub async fn validate_api_key(
+        &self,
+        params: ValidateApiKeyParams,
+    ) -> Result<ValidateApiKeyResponse, ApiKeyError> {
+        if hex::decode(&params.api_key_token).is_err() {
+            return Err(ApiKeyError::InvalidAPIKey {
+                message: "Invalid API key format.".to_string()
+                });
+        }
+    
         crate::apis::api_key_service_api::validate_api_key(&self.config, params)
             .await
             .map_err(|err| {
                 map_autogenerated_error(
                     err,
                     ApiKeyError::UnexpectedExceptionWithSDK,
-                    |status_code, _| match status_code.as_u16() {
-                        401 => ApiKeyError::InvalidIntegrationAPIKey,
-                        404 => ApiKeyError::NotFound,
-                        _ => ApiKeyError::UnknownError,
+                    |status_code, error_response_body| match error_response_body {
+                        Some(ApiKeyValidationErrorResponse::InvalidEndUserApiKey {
+                            api_key_token,
+                        }) => ApiKeyError::InvalidAPIKey {
+                            message: api_key_token,
+                        },
+                        Some(ApiKeyValidationErrorResponse::EndUserApiKeyRateLimited {
+                            wait_seconds,
+                            user_facing_error,
+                            ..
+                        }) => ApiKeyError::RateLimited {
+                            wait_seconds,
+                            user_facing_error,
+                        },
+                        None => match status_code.as_u16() {
+                            401 => ApiKeyError::InvalidIntegrationAPIKey,
+                            404 => ApiKeyError::NotFound,
+                            _ => ApiKeyError::UnknownError,
+                        },
                     },
                 )
             })