curl --request POST \
  --url https://api.postqueen.ai/oauth/register \
  --header 'Content-Type: application/json' \
  --data '
{
  "client_name": "My MCP client",
  "redirect_uris": [
    "http://127.0.0.1:33418/callback"
  ],
  "token_endpoint_auth_method": "none"
}
'

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    client_name: 'My MCP client',
    redirect_uris: ['http://127.0.0.1:33418/callback'],
    token_endpoint_auth_method: 'none'
  })
};

fetch('https://api.postqueen.ai/oauth/register', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.postqueen.ai/oauth/register"

payload = {
    "client_name": "My MCP client",
    "redirect_uris": ["http://127.0.0.1:33418/callback"],
    "token_endpoint_auth_method": "none"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "client_id": "pcd_5sT8wQ2eR7yU1iO4pA9sD3fG6hJ0kL2z",
  "client_id_issued_at": 1790845200,
  "client_name": "My MCP client",
  "redirect_uris": [
    "http://127.0.0.1:33418/callback"
  ],
  "token_endpoint_auth_method": "none",
  "grant_types": [
    "authorization_code"
  ],
  "response_types": [
    "code"
  ],
  "scope": "mcp:read mcp:write"
}

{
  "error": "invalid_redirect_uri",
  "error_description": "redirect_uris must use https or a private-use scheme (http is allowed for loopback only)"
}