Stream Workflow Events
Resume the Server-Sent Events stream for a workflow run after a pause or a dropped SSE connection. For runs that have already finished, the stream emits a single workflow_finished event and closes.
To check an in-progress run’s node-level status and progress, call it with include_state_snapshot=true: the stream replays each already-executed node’s status before streaming new events.
curl --request GET \
--url https://{api_base_url}/workflow/{workflow_run_id}/events \
--header 'Authorization: Bearer <token>'import requests
url = "https://{api_base_url}/workflow/{workflow_run_id}/events"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://{api_base_url}/workflow/{workflow_run_id}/events', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://{api_base_url}/workflow/{workflow_run_id}/events",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://{api_base_url}/workflow/{workflow_run_id}/events"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://{api_base_url}/workflow/{workflow_run_id}/events")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://{api_base_url}/workflow/{workflow_run_id}/events")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_bodydata: {"event": "human_input_form_filled", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"node_id": "approval_node", "node_title": "Approval", "rendered_content": "Please review the draft.", "action_id": "approve", "action_text": "Approve"}} data: {"event": "node_started", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"id": "ne_002", "node_id": "node_llm_1", "node_type": "llm", "title": "LLM", "index": 2, "created_at": 1705407705}} data: {"event": "reasoning_chunk", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "data": {"message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "reasoning": "The reviewer approved the draft.", "node_id": "node_llm_1", "is_final": false}} data: {"event": "reasoning_chunk", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "data": {"message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "reasoning": "", "node_id": "node_llm_1", "is_final": true}} data: {"event": "message", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "answer": "Approved", "created_at": 1705407706} data: {"event": "node_finished", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407706, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"id": "ne_002", "node_id": "node_llm_1", "node_type": "llm", "title": "LLM", "index": 2, "status": "succeeded", "elapsed_time": 1.2, "created_at": 1705407705, "finished_at": 1705407706}} data: {"event": "message_end", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407706, "metadata": {"usage": {"total_tokens": 42, "latency": 1.3}}} data: {"event": "workflow_finished", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407706, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "workflow_id": "7c3e33d4-2a8b-4e5f-9b1a-d3c6e8f12345", "status": "succeeded", "elapsed_time": 2.1, "total_tokens": 42, "total_steps": 2, "created_at": 1705407629, "finished_at": 1705407706}}{
"status": 400,
"code": "not_workflow_app",
"message": "Please check if your app mode matches the right API route."
}{
"status": 404,
"code": "not_found",
"message": "Workflow run not found"
}Authorizations
API Key authentication. For all API requests, include your API Key in the Authorization HTTP Header, prefixed with Bearer. Example: Authorization: Bearer {API_KEY}. Strongly recommend storing your API Key on the server-side, not shared or stored on the client-side, to avoid possible API-Key leakage that can lead to serious consequences.
Path Parameters
The workflow run ID (the workflow_run_id from the original Send Chat Message response) whose event stream to resume.
Query Parameters
End-user identifier that sent the chat message. Must match the creator of the workflow run.
When true, replay from the persisted state snapshot to include a status summary of already-executed nodes before streaming new events.
Set to true to keep the stream open across multiple workflow_paused events (useful when the workflow has more than one Human Input node in sequence). Default closes the stream after the first pause.
Response
Server-Sent Events stream. Each event is delivered as data: {JSON}\n\n. Event payloads follow the same schemas as the original streaming response.
SSE stream of events from a resumed workflow run, in the same format as Send Chat Message. When the resumed portion runs an LLM node with reasoning_format: separated, this stream also carries reasoning_chunk events.
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curl --request GET \
--url https://{api_base_url}/workflow/{workflow_run_id}/events \
--header 'Authorization: Bearer <token>'import requests
url = "https://{api_base_url}/workflow/{workflow_run_id}/events"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://{api_base_url}/workflow/{workflow_run_id}/events', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://{api_base_url}/workflow/{workflow_run_id}/events",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://{api_base_url}/workflow/{workflow_run_id}/events"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://{api_base_url}/workflow/{workflow_run_id}/events")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://{api_base_url}/workflow/{workflow_run_id}/events")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_bodydata: {"event": "human_input_form_filled", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"node_id": "approval_node", "node_title": "Approval", "rendered_content": "Please review the draft.", "action_id": "approve", "action_text": "Approve"}} data: {"event": "node_started", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"id": "ne_002", "node_id": "node_llm_1", "node_type": "llm", "title": "LLM", "index": 2, "created_at": 1705407705}} data: {"event": "reasoning_chunk", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "data": {"message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "reasoning": "The reviewer approved the draft.", "node_id": "node_llm_1", "is_final": false}} data: {"event": "reasoning_chunk", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407705, "data": {"message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "reasoning": "", "node_id": "node_llm_1", "is_final": true}} data: {"event": "message", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "answer": "Approved", "created_at": 1705407706} data: {"event": "node_finished", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407706, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"id": "ne_002", "node_id": "node_llm_1", "node_type": "llm", "title": "LLM", "index": 2, "status": "succeeded", "elapsed_time": 1.2, "created_at": 1705407705, "finished_at": 1705407706}} data: {"event": "message_end", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407706, "metadata": {"usage": {"total_tokens": 42, "latency": 1.3}}} data: {"event": "workflow_finished", "task_id": "c3800678-a077-43df-a102-53f23ed20b88", "message_id": "2e4f6a8b-1c3d-5e7f-9a0b-2c4d6e8f0a1b", "conversation_id": "9d3a2f1b-6c7d-4e8f-a0b1-c2d3e4f5a6b7", "created_at": 1705407706, "workflow_run_id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "data": {"id": "fb47b2e6-5e43-4f90-be01-d5c5a088d156", "workflow_id": "7c3e33d4-2a8b-4e5f-9b1a-d3c6e8f12345", "status": "succeeded", "elapsed_time": 2.1, "total_tokens": 42, "total_steps": 2, "created_at": 1705407629, "finished_at": 1705407706}}{
"status": 400,
"code": "not_workflow_app",
"message": "Please check if your app mode matches the right API route."
}{
"status": 404,
"code": "not_found",
"message": "Workflow run not found"
}