From 85a76912d3484b727af2e0c310b7508a10541ce3 Mon Sep 17 00:00:00 2001
From: bracesproul <braceasproul@gmail.com>
Date: Tue, 15 Oct 2024 11:33:40 -0700
Subject: [PATCH] fix(sdk-js): Pass api key in headers by default if in env

---
 libs/sdk-js/src/client.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/sdk-js/src/client.ts b/libs/sdk-js/src/client.ts
index c17e15ed5..133da19b3 100644
--- a/libs/sdk-js/src/client.ts
+++ b/libs/sdk-js/src/client.ts
@@ -60,6 +60,9 @@ class BaseClient {
     this.defaultHeaders = config?.defaultHeaders || {};
     if (config?.apiKey != null) {
       this.defaultHeaders["X-Api-Key"] = config.apiKey;
+    } else if (process.env.LANGCHAIN_API_KEY) {
+      // Attempt to read the API key from the environment
+      this.defaultHeaders["X-Api-Key"] = process.env.LANGCHAIN_API_KEY;
     }
   }