diff --git a/server/core/lib/auth/external-auth.ts b/server/core/lib/auth/external-auth.ts
index 35fecb860cd..284453cb4b1 100644
--- a/server/core/lib/auth/external-auth.ts
+++ b/server/core/lib/auth/external-auth.ts
@@ -45,7 +45,7 @@ async function onExternalUserAuthenticated (options: {
     return
   }
 
-  const { res, externalRedirectUri } = authResult
+  const { res, externalRedirectUri, returnJsonNoRedirect } = authResult
 
   if (!isAuthResultValid(npmName, authName, authResult)) {
     res.redirect('/login?externalAuthError=true')
@@ -76,7 +76,9 @@ async function onExternalUserAuthenticated (options: {
     }
   }
 
-  if (externalRedirectUri) {
+  if(returnJsonNoRedirect) {
+    res.status(200).json({ externalAuthToken: bypassToken, username: user.username })
+  } else if (externalRedirectUri) {
     const url = new URL(externalRedirectUri)
     url.searchParams.set('externalAuthToken', bypassToken)
     url.searchParams.set('username', user.username)
diff --git a/server/core/types/plugins/register-server-auth.model.ts b/server/core/types/plugins/register-server-auth.model.ts
index e358f270a14..c93c39debd9 100644
--- a/server/core/types/plugins/register-server-auth.model.ts
+++ b/server/core/types/plugins/register-server-auth.model.ts
@@ -35,6 +35,8 @@ export interface RegisterServerExternalAuthenticatedResult extends RegisterServe
   res: express.Response
   // Redirect the user to this external URI after the external auth has been verified.
   externalRedirectUri?: string
+  // Respond with a 200 OK and JSON body instead of redirecting, to allow API access.
+  returnJsonNoRedirect?: boolean
 }
 
 interface RegisterServerAuthBase {