curl --request POST \
  --url https://api.thefaithapp.com/v1/auth/start \
  --header 'Content-Type: application/json' \
  --data '
{
  "client_key": "your-public-client-key",
  "redirect_uri": "https://example.com/auth/callback",
  "state": "replace-with-at-least-16-random-characters",
  "code_challenge": "base64url-sha256-of-your-code-verifier",
  "code_challenge_method": "S256"
}
'

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    client_key: 'your-public-client-key',
    redirect_uri: 'https://example.com/auth/callback',
    state: 'replace-with-at-least-16-random-characters',
    code_challenge: 'base64url-sha256-of-your-code-verifier',
    code_challenge_method: 'S256'
  })
};

fetch('https://api.thefaithapp.com/v1/auth/start', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.thefaithapp.com/v1/auth/start"

payload = {
    "client_key": "your-public-client-key",
    "redirect_uri": "https://example.com/auth/callback",
    "state": "replace-with-at-least-16-random-characters",
    "code_challenge": "base64url-sha256-of-your-code-verifier",
    "code_challenge_method": "S256"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

{
  "auth_url": "https://auth.thefaithapp.com/member/sign-in?client_key=your-public-client-key&redirect_uri=https%3A%2F%2Fexample.com%2Fauth%2Fcallback&state=replace-with-at-least-16-random-characters&code_challenge=base64url-sha256-of-your-code-verifier&code_challenge_method=S256",
  "client": {
    "id": 45,
    "name": "Example Church",
    "image": "clients/example-logo.png",
    "image_url": "https://cdn.example.com/clients/example-logo.png",
    "about": null,
    "public_uuid": "11111111-2222-3333-4444-555555555555"
  },
  "redirect_uri": "https://example.com/auth/callback",
  "providers": [
    "google",
    "apple",
    "email"
  ]
}

{
  "status": "Error",
  "message": "The request could not be completed.",
  "error": null,
  "error_message": null,
  "errors": {}
}

{
  "status": "Error",
  "message": "The request could not be completed.",
  "error": null,
  "error_message": null,
  "errors": {}
}