curl --request GET \
--url https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output \
--header 'Authorization: Bearer <token>'import requests
url = "https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output', 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://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output",
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://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output"
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://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output")
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{
"output": "[ 0.000000] Linux version 6.12.0-cloud-amd64\n[ 119.356852] cloud-init[1000]: Cloud-init v. 25.1.4 finished\n",
"truncated": false
}{
"error": {
"code": "INVALID_INPUT",
"message": "Invalid request parameters",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "UNAUTHORIZED",
"message": "Authentication required",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "ACCESS_DENIED",
"message": "You don't have permission to perform this action",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "NOT_FOUND",
"message": "Resource not found",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "INTERNAL_ERROR",
"message": "An internal error occurred",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}Get the instance's serial console output
Returns the guest’s serial console transcript — what it wrote to ttyS0 during its current boot.
This is the diagnostic for an instance that never came up, which is exactly when SSH cannot answer: a bad fstab, a wrong kernel, a security group that locked you out, a cloud-init failure. Nothing has to be installed in the guest for it to work.
The transcript covers the CURRENT boot only — it is reset each time the instance starts — so a crashed guest’s last transcript is gone once it restarts. An instance that has never booted returns an empty output rather than an error.
curl --request GET \
--url https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output \
--header 'Authorization: Bearer <token>'import requests
url = "https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output', 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://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output",
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://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output"
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://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://compute.{region}.basaltic.sh/v1/instances/{instance_id}/console/output")
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{
"output": "[ 0.000000] Linux version 6.12.0-cloud-amd64\n[ 119.356852] cloud-init[1000]: Cloud-init v. 25.1.4 finished\n",
"truncated": false
}{
"error": {
"code": "INVALID_INPUT",
"message": "Invalid request parameters",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "UNAUTHORIZED",
"message": "Authentication required",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "ACCESS_DENIED",
"message": "You don't have permission to perform this action",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "NOT_FOUND",
"message": "Resource not found",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "INTERNAL_ERROR",
"message": "An internal error occurred",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}compute:GetConsoleOutput. See COMPUTE permissions for the full list, what each one covers, and an example policy.Authorizations
An OAuth 2.0 bearer token, sent as Authorization: Bearer <token>.
This is the recommended way to authenticate.
Get one by exchanging a service account's access key pair at
POST /v1/oauth/token with grant_type=client_credentials. It is the
standard client-credentials grant, so any OAuth-aware library will
obtain and refresh it for you.
curl -s -u "$KEY_ID:$SECRET" -d grant_type=client_credentials \
https://iam.basaltic.sh/v1/oauth/token
Tokens last an hour by default. The same access key pair is separately your AWS SigV4 credential for the S3-compatible object endpoint, which speaks nothing else.
Path Parameters
Instance ID
Query Parameters
Return at most this many bytes from the END of the transcript. A ceiling you may lower, not raise: values above the 65536-byte maximum are clamped to it.
1 <= x <= 65536Response
The instance's console output
The transcript as plain text, newlines included. Empty when the instance has not booted yet.
"[ 0.000000] Linux version 6.12.0-cloud-amd64\n[ 119.356852] cloud-init[1000]: Cloud-init v. 25.1.4 finished\n"
True when the transcript was longer than the requested size and its BEGINNING was dropped to fit. The end is always kept.
false

