OpenAI Verify API

HTTP API for https://openai.com/research/verify/ to detect AI-generated images containing C2PA metadata and/or SynthID watermarks, and reports whether either is detected.

Uses CloakBrowser to obtain a Turnstile token.

Quick start

git clone https://github.com/ndlyyyyy/openai-verify-api.git
cd openai-verify-api
python -m pip install -e .
python -m openai_verify_api

Optional CLI arguments:

• --host (default: 127.0.0.1)
• --port (default: 8000)

Verify a single file

curl -X POST http://127.0.0.1:8000/verify \
  -F "file=@/path/to/image.png"

Example response:

{
  "filename": "image.png",
  "media_type": "image/png",
  "openai_generated": true,
  "upstream": {
    "object": "provenance_check",
    "created_at": 1779225920,
    "results": [
      {
        "type": "c2pa",
        "issuer": "OpenAI OpCo, LLC",
        "outcome": "detected",
        "validation_state": "trusted"
      },
      {
        "type": "synthid",
        "outcome": "detected"
      }
    ]
  }
}

Run tests

python -m pytest -q