Stream invocation events via SSE

Establishes a Server-Sent Events (SSE) stream that delivers real-time logs and status updates for an invocation. The stream terminates automatically once the invocation reaches a terminal state.

GET /invocations/{id}/events

JavaScript

JavaScript

import Kernel from '@onkernel/sdk';

const client = new Kernel({
  apiKey: process.env['KERNEL_API_KEY'], // This is the default and can be omitted
});

const response = await client.invocations.follow('id');

console.log(response);

import os
from kernel import Kernel

client = Kernel(
    api_key=os.environ.get("KERNEL_API_KEY"),  # This is the default and can be omitted
)
for invocation in client.invocations.follow(
    id="id",
):
  print(invocation)

package main

import (
	"context"
	"fmt"

	"github.com/kernel/kernel-go-sdk"
	"github.com/kernel/kernel-go-sdk/option"
)

func main() {
	client := kernel.NewClient(
		option.WithAPIKey("My API Key"),
	)
	stream := client.Invocations.FollowStreaming(
		context.TODO(),
		"id",
		kernel.InvocationFollowParams{},
	)
	for stream.Next() {
		fmt.Printf("%+v\n", stream.Current())
	}
	err := stream.Err()
	if err != nil {
		panic(err.Error())
	}
}

curl --request GET \
  --url https://api.onkernel.com/invocations/{id}/events \
  --header 'Authorization: Bearer <token>'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.onkernel.com/invocations/{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;
}

HttpResponse<String> response = Unirest.get("https://api.onkernel.com/invocations/{id}/events")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.onkernel.com/invocations/{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_body

200

{
  "event": "<string>",
  "timestamp": "2023-11-07T05:31:56Z",
  "message": "<string>"
}

{
  "code": "bad_request",
  "message": "Missing required field: app_name",
  "details": [
    {
      "code": "invalid_input",
      "message": "Provided version string is not semver compliant"
    }
  ],
  "inner_error": {
    "code": "invalid_input",
    "message": "Provided version string is not semver compliant"
  }
}

{
  "code": "bad_request",
  "message": "Missing required field: app_name",
  "details": [
    {
      "code": "invalid_input",
      "message": "Provided version string is not semver compliant"
    }
  ],
  "inner_error": {
    "code": "invalid_input",
    "message": "Provided version string is not semver compliant"
  }
}

{
  "code": "bad_request",
  "message": "Missing required field: app_name",
  "details": [
    {
      "code": "invalid_input",
      "message": "Provided version string is not semver compliant"
    }
  ],
  "inner_error": {
    "code": "invalid_input",
    "message": "Provided version string is not semver compliant"
  }
}

{
  "code": "bad_request",
  "message": "Missing required field: app_name",
  "details": [
    {
      "code": "invalid_input",
      "message": "Provided version string is not semver compliant"
    }
  ],
  "inner_error": {
    "code": "invalid_input",
    "message": "Provided version string is not semver compliant"
  }
}

Authorizations

Authorization · string · header · required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Path Parameters

id · string · required

The invocation ID to follow.

Query Parameters

since · string

Show logs since the given time (RFC timestamps or durations like 5m).

Example:

"2025-06-20T12:00:00Z"

Response

200

text/event-stream

SSE stream of invocation state updates and logs.

Option 1

Option 2

Option 3

Option 4

Union type representing any invocation event.

event · string · required

Event type identifier (always "log").

Allowed value: "log"

timestamp · string<date-time> · required

Time the log entry was produced.

message · string · required

Log message text.