Skip to main content
GET
/
browsers
/
{id}
/
telemetry
/
stream
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.browsers.telemetry.stream('id');

console.log(response.event);
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 telemetry in client.browsers.telemetry.stream(
    id="id",
):
  print(telemetry)
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.Browsers.Telemetry.StreamStreaming(
		context.TODO(),
		"id",
		kernel.BrowserTelemetryStreamParams{},
	)
	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/browsers/{id}/telemetry/stream \
  --header 'Authorization: Bearer <token>'
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.onkernel.com/browsers/{id}/telemetry/stream",
  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/browsers/{id}/telemetry/stream")
  .header("Authorization", "Bearer <token>")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.onkernel.com/browsers/{id}/telemetry/stream")

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
{
  "seq": 2,
  "event": {
    "ts": 123,
    "type": "<string>",
    "category": "<string>",
    "source": {
      "event": "<string>",
      "metadata": {}
    },
    "data": {
      "session_id": "<string>",
      "target_id": "<string>",
      "frame_id": "<string>",
      "loader_id": "<string>",
      "url": "<string>",
      "nav_seq": 123,
      "level": "<string>",
      "text": "<string>",
      "args": [
        "<string>"
      ],
      "stack_trace": {
        "callFrames": [
          {
            "functionName": "<string>",
            "scriptId": "<string>",
            "url": "<string>",
            "lineNumber": 123,
            "columnNumber": 123
          }
        ],
        "description": "<string>",
        "parent": "<unknown>"
      }
    },
    "truncated": true
  }
}
{
  "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.

Headers

​
Last-Event-ID
string

Last event sequence number for SSE reconnection (sent by SSE clients on reconnect). Takes precedence over replay when both are present, so reconnect resumes instead of re-replaying.

Path Parameters

​
id
string
required

Browser session ID

Query Parameters

​
replay
string

Pass all to start from the oldest retained event instead of only new events; any other value is treated as from-now. The buffer is bounded, so the first event id may be greater than 1 if older events were evicted.

Response

SSE stream of telemetry events

Envelope wrapping a browser telemetry event with its monotonic sequence number. Each SSE data: frame carries one envelope as JSON. The seq value is also emitted as the SSE id: field so clients can pass it as Last-Event-ID on reconnect.

​
seq
integer<int64>
required

Process-monotonic sequence number assigned by the browser VM. Pass as Last-Event-ID on reconnect to resume without gaps. Gaps in received seq values indicate dropped events.

Required range: x >= 1
​
event
console_log · object
required

Union type representing any browser telemetry event. Discriminated on type. Each event's category determines when it is captured. The CDP collector-health events (monitor_disconnected, monitor_reconnected, monitor_reconnect_failed, monitor_init_failed) use the monitor category, which is not user-configurable: it flows automatically whenever any CDP category (console, network, page, interaction) is captured, and is silent otherwise. monitor_screenshot uses the opt-in screenshot category. All other event types are controlled by their per-category enable/disable flags.