curl --request POST \
  --url 'https://oauth.msu.io/oauth/introspect' \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --header 'Authorization: Basic base64({CLIENT_ID}:{CLIENT_SECRET})' \
  --data 'token={ACCESS_TOKEN}&token_type_hint=access_token'

const response = await fetch('https://oauth.msu.io/oauth/introspect', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Authorization': `Basic ${btoa('{CLIENT_ID}:{CLIENT_SECRET}')}`
  },
  body: new URLSearchParams({
    token: '{ACCESS_TOKEN}',
    token_type_hint: 'access_token'
  })
});
const data = await response.json();

import requests
import base64

credentials = base64.b64encode(b'{CLIENT_ID}:{CLIENT_SECRET}').decode()

response = requests.post(
  'https://oauth.msu.io/oauth/introspect',
  headers={
    'Content-Type': 'application/x-www-form-urlencoded',
    'Authorization': f'Basic {credentials}'
  },
  data={
    'token': '{ACCESS_TOKEN}',
    'token_type_hint': 'access_token'
  }
)
data = response.json()

{
  "active": true,
  "client_id": "e5451c6e-7bc1-4ec3-bd9c-98c18a7d3290",
  "exp": 1781673359,
  "iat": 1781672759,
  "iss": "NEXPACE",
  "jti": "b8ddec65-3697-441c-a118-fa31a08ccb42",
  "scope": "enhancement",
  "sub": "0x1234567890AbcdEF1234567890aBcdef12345678",
  "token_type": "Bearer"
}

{
  "active": false
}