From b63572ee16bf59883475b14795aa291d61582f21 Mon Sep 17 00:00:00 2001
From: William FH <13333726+hinthornw@users.noreply.github.com>
Date: Tue, 26 Aug 2025 20:51:30 -0700
Subject: [PATCH] chore: Update OpenAPI spec from LangGraph API v0.4.0 (#6011)

This PR updates the OpenAPI specification with changes detected from the
LangGraph API server.

**Changes detected as of LangGraph API version 0.4.0**

This update was automatically generated by the sync workflow in the
langgraph-api repository.

Co-authored-by: hinthornw <hinthornw@users.noreply.github.com>
---
 docs/docs/cloud/reference/api/openapi.json | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/docs/docs/cloud/reference/api/openapi.json b/docs/docs/cloud/reference/api/openapi.json
index 212a65a74..4fa99c8a3 100644
--- a/docs/docs/cloud/reference/api/openapi.json
+++ b/docs/docs/cloud/reference/api/openapi.json
@@ -1520,6 +1520,73 @@
         }
       }
     },
+    "/threads/{thread_id}/stream": {
+      "get": {
+        "tags": [
+          "Threads"
+        ],
+        "summary": "Join Thread Stream",
+        "description": "This endpoint streams output in real-time from a thread. The stream will include the output of each run executed sequentially on the thread and will remain open indefinitely. It is the responsibility of the calling client to close the connection.",
+        "operationId": "join_thread_stream_threads__thread_id__stream_get",
+        "parameters": [
+          {
+            "description": "The ID of the thread.",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Thread Id",
+              "description": "The ID of the thread."
+            },
+            "name": "thread_id",
+            "in": "path"
+          },
+          {
+            "required": false,
+            "schema": {
+              "type": "string",
+              "title": "Last Event ID",
+              "description": "The ID of the last event received. Used to resume streaming from a specific point. Pass '-' to resume from the beginning."
+            },
+            "name": "Last-Event-ID",
+            "in": "header"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Success",
+            "content": {
+              "text/event-stream": {
+                "schema": {
+                  "type": "string",
+                  "description": "The server will send a stream of events in SSE format.\n\n**Example event**:\n\nid: 1\n\nevent: message\n\ndata: {}"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Not Found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/threads/{thread_id}/runs": {
       "get": {
         "tags": [