AI Image Detection

Determine whether an image was generated by AI or captured by a human. Returns a confidence score across a multi-model ensemble.

POST /ai/detect

Authentication

Bearer token in the Authorization header.

Request

Content-Type: multipart/form-data

Field	Type	Required	Description
file	File	Required	Image file to analyse. Accepts PNG, JPEG, and WebP.

Response

Field	Type	Description
score	number	Probability the image is AI-generated (0.0 – 1.0).
verdict	string	Pixel-score verdict: "likely_ai" (>0.7), "possibly_ai" (>0.5), "probably_real" (>0.3), or "likely_real".
pixel_score	number	Same as score. The pixel ensemble only; not mutated by credentials.
provenance	object	Pass-1 credentials: C2PA, optional SynthID, and generator metadata (A1111/ComfyUI/EXIF). Absence is not evidence of a real photo.
combined_verdict	string	"ai_credentialed" or "real_credentialed" when Pass 1 finds evidence; otherwise equals verdict.

Example

Request

curl -X POST https://api.cacuda.com/ai/detect \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@photo.jpg"

Response 200 OK

{
  "score": 0.92,
  "verdict": "likely_ai",
  "pixel_score": 0.92,
  "combined_verdict": "ai_credentialed",
  "provenance": {
    "c2pa": {
      "present": true,
      "valid": true,
      "ai_generated": true,
      "generator": "OpenAI"
    },
    "synthid": {
      "checked": false,
      "detected": false
    },
    "metadata": {
      "present": false
    },
    "verdict": "ai_credentialed"
  }
}

Error Codes

Code	Description
400	No file provided or unsupported format.
401	Missing or invalid API key.
402	Insufficient credits.
503	Detection service unavailable.

Try it in the scanner

Test this endpoint interactively with real data. No code required.

Open Scanner