From 7dd09607cec7cb46cef686082f10b9152191f83c Mon Sep 17 00:00:00 2001
From: Taranum Wasu <taranumwasu@Taranums-MacBook-Pro.local>
Date: Sun, 28 Jun 2026 00:17:28 +0530
Subject: [PATCH] fix(web): send session cookies on playground/agent generate
 requests

Self-hosted Better Auth requires the session cookie on cross-origin Jawn
calls; the Playground generate path omitted credentials: include unlike
getJawnClient(), causing Invalid session on /v1/playground/generate.

Fixes #5653

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 web/lib/api/llm/generate.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/web/lib/api/llm/generate.ts b/web/lib/api/llm/generate.ts
index aa2d66c12a..a39b6e1fcf 100644
--- a/web/lib/api/llm/generate.ts
+++ b/web/lib/api/llm/generate.ts
@@ -184,6 +184,8 @@ export async function generate<T extends object | undefined = undefined>(
     `${env("NEXT_PUBLIC_HELICONE_JAWN_SERVICE")}/v1/${apiEndpoint}/generate`,
     {
       method: "POST",
+      credentials: "include",
+      signal: params.signal,
       body: JSON.stringify({
         messages: params.messages,
         stream: !!params.stream,