curl --request POST \
--url https://api.verlon.ai/v1/oauth/device/token \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"grant_type": "urn:ietf:params:oauth:grant-type:device_code",
"device_code": "<string>"
}
'import requests
url = "https://api.verlon.ai/v1/oauth/device/token"
payload = {
"grant_type": "urn:ietf:params:oauth:grant-type:device_code",
"device_code": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
grant_type: 'urn:ietf:params:oauth:grant-type:device_code',
device_code: '<string>'
})
};
fetch('https://api.verlon.ai/v1/oauth/device/token', 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.verlon.ai/v1/oauth/device/token",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'grant_type' => 'urn:ietf:params:oauth:grant-type:device_code',
'device_code' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.verlon.ai/v1/oauth/device/token"
payload := strings.NewReader("{\n \"grant_type\": \"urn:ietf:params:oauth:grant-type:device_code\",\n \"device_code\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.verlon.ai/v1/oauth/device/token")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"grant_type\": \"urn:ietf:params:oauth:grant-type:device_code\",\n \"device_code\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.verlon.ai/v1/oauth/device/token")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"grant_type\": \"urn:ietf:params:oauth:grant-type:device_code\",\n \"device_code\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"error": "<string>",
"message": "<string>",
"details": "<unknown>"
}{
"error": "<string>",
"message": "<string>",
"details": "<unknown>"
}Poll a device-flow for completion (RFC 8628 §3.4)
Use when: caller (typically a CLI) is polling for the user to approve the device-code flow it started — returns the access_token + refresh_token once approved, or a structured error code (authorization_pending / slow_down / expired_token / access_denied) while still pending
Per RFC 8628, errors during the polling phase use a 400 status with a stable error code the CLI branches on: authorization_pending (keep polling), slow_down (back off), expired_token (start a new flow), access_denied (user clicked Deny). Successful approval returns 200 with the issued token pair.
curl --request POST \
--url https://api.verlon.ai/v1/oauth/device/token \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"grant_type": "urn:ietf:params:oauth:grant-type:device_code",
"device_code": "<string>"
}
'import requests
url = "https://api.verlon.ai/v1/oauth/device/token"
payload = {
"grant_type": "urn:ietf:params:oauth:grant-type:device_code",
"device_code": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
grant_type: 'urn:ietf:params:oauth:grant-type:device_code',
device_code: '<string>'
})
};
fetch('https://api.verlon.ai/v1/oauth/device/token', 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.verlon.ai/v1/oauth/device/token",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'grant_type' => 'urn:ietf:params:oauth:grant-type:device_code',
'device_code' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.verlon.ai/v1/oauth/device/token"
payload := strings.NewReader("{\n \"grant_type\": \"urn:ietf:params:oauth:grant-type:device_code\",\n \"device_code\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.verlon.ai/v1/oauth/device/token")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"grant_type\": \"urn:ietf:params:oauth:grant-type:device_code\",\n \"device_code\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.verlon.ai/v1/oauth/device/token")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"grant_type\": \"urn:ietf:params:oauth:grant-type:device_code\",\n \"device_code\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"error": "<string>",
"message": "<string>",
"details": "<unknown>"
}{
"error": "<string>",
"message": "<string>",
"details": "<unknown>"
}Authorizations
Verlon API key (newly minted keys are prefixed sk-vrln-; legacy verlon_* and layer_* keys from prior prefix migrations continue to validate). Generated from the dashboard under Settings → API Keys, or via verlon key create in the CLI.
Body
Response
Access + refresh token pair issued.

