generated: '2026-08-25'
method: probed
source: https://github.com/carcutter/carcutter-api-samples + live probe of https://api.car-cutter.com on 2026-08-25
summary: 'CarCutter publishes a keyless public demo of its image-composition endpoint plus a hosted
  demo Web UI. There is no test/live key duality, no sandbox account, no test fixtures and no time
  simulation — the demo is a single unauthenticated production path on the production host.'
modes:
- name: public demo
  auth: none
  endpoint: POST https://api.car-cutter.com/vehicle/composition/segment
  documented_at: https://github.com/carcutter/carcutter-api-samples
  probe:
    request: POST with multipart cut_type=none and no image file, no Authorization header
    http_status: 400
    body: '{"error":{"code":400,"message":"invalid file"}}'
    checked: '2026-08-25'
    interpretation: 'The endpoint accepted an unauthenticated request and rejected it on input
      validation, not on authorization — confirming the demo path is genuinely keyless.'
  supported_parameters:
    cut_type: [complete, normal, blur, none]
  note: 'The samples repo documents /vehicle/composition/segment; the current OpenAPI documents
    /vehicle/composition/single-segment as the authenticated synchronous path. Both were reachable
    on 2026-08-25.'
- name: hosted demo UI
  url: https://demo.car-cutter.com/
  auth: none observed (HTTP 200)
  note: Browser tool for uploading an image and experimenting with cut types.
test_credentials:
  published: false
  note: No test API keys, test tokens or test vehicle identifiers are published. Nothing of that kind is invented here.
test_data:
  fixtures: 'The samples repository ships example source images (images/source/front-left.jpg, side-left.jpg, front.jpg) used by its curl examples.'
time_simulation:
  supported: false
billing_isolation:
  supported: false
  note: 'Authenticated calls consume account image-processing credits (402 "Credits exceeded. Please
    contact sales."). There is no non-billable test mode for authenticated operations.'