AnyImageDetector Detection API
Analyze an image and report whether it is AI-generated.
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OpenAPI Specification
openapi: 3.2.0
info:
title: AI Image Detector Detection API
version: v1
summary: Single-endpoint REST API that reports whether an image is AI-generated.
description: The AI Image Detector API exposes a single endpoint that reports whether an image is AI-generated.
contact:
name: AnyImageDetector Support
email: support@imagedetector.online
url: https://imagedetector.online/api
termsOfService: https://imagedetector.online/terms-of-service
x-provenance:
generated: '2026-08-11'
method: derived
derivation: transcribed-from-published-reference
source: https://imagedetector.online/docs
additional_sources:
- https://imagedetector.online/api
- https://imagedetector.online/pricing
published_by_provider: false
note: Authored by API Evangelist from the provider's published HTML reference. It is NOT a provider-published contract and carries no support commitment from AnyImageDetector.
servers:
- url: https://imagedetector.online/v1
description: Production. HTTPS only, versioned with a /v1 path prefix.
security:
- BearerAuth: []
- ApiKeyHeader: []
tags:
- name: Detection
description: Analyze an image and report whether it is AI-generated.
paths:
/image/detect:
post:
tags:
- Detection
operationId: detectImage
summary: Detect whether an image is AI-generated
description: Send EITHER a multipart file upload OR a JSON body containing a public image URL. Provide exactly one of `image` or `imageUrl` per request. A successful detection costs 1 credit.
requestBody:
required: true
content:
multipart/form-data:
schema:
type: object
required:
- image
properties:
image:
type: string
format: binary
description: Image file to analyze. JPG, PNG or WebP, up to 8 MB.
additionalProperties: false
application/json:
schema:
type: object
required:
- imageUrl
properties:
imageUrl:
type: string
format: uri
description: Publicly reachable HTTP/HTTPS URL of the image.
examples:
- https://example.com/photo.jpg
additionalProperties: false
responses:
'200':
description: Detection result.
content:
application/json:
schema:
$ref: '#/components/schemas/DetectionResult'
examples:
likelyAi:
summary: Published example response
value:
verdict: likely_ai
ai_score: 0.87
confidence: high
source_breakdown: []
'400':
description: bad_request — Missing or invalid image, URL, or format.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
badRequest:
value:
error: bad_request
message: Missing or invalid image, URL, or format
'401':
description: unauthorized — Missing or invalid API key.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
unauthorized:
summary: Body observed on a live anonymous probe, 2026-08-11
value:
error: unauthorized
message: Missing API key
'402':
description: insufficient_credits — Out of credits; upgrade your plan.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
insufficientCredits:
summary: Published example error body
value:
error: insufficient_credits
message: Insufficient credits
'403':
description: paid_plan_required — API access requires a paid plan.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
paidPlanRequired:
value:
error: paid_plan_required
message: API access requires a paid plan
'429':
description: too_many_requests — Rate limit exceeded (1 request per second per API key). Retry after the number of seconds given in the Retry-After header.
headers:
Retry-After:
description: Seconds to wait before retrying.
schema:
type: integer
example: 1
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
tooManyRequests:
value:
error: too_many_requests
message: Rate limit exceeded
'500':
description: detection_failed — Unexpected provider error.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
detectionFailed:
value:
error: detection_failed
message: Unexpected provider error
'503':
description: unavailable — Detection provider not configured.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
unavailable:
value:
error: unavailable
message: Detection provider not configured
x-credit-cost: 1
x-evidence:
probed: '2026-08-11'
url: https://imagedetector.online/v1/image/detect
method: POST
request: 'application/json {"imageUrl": "https://example.com/photo.jpg"} with no credentials'
http_status: 401
content_type: application/json
body: '{"error":"unauthorized","message":"Missing API key"}'
note: The live unauthenticated response matches the documented 401 envelope exactly, which confirms the endpoint, the base URL and the error shape recorded here.
components:
schemas:
Error:
type: object
title: Error
description: Errors return a JSON body with a machine-readable `error` code, a human-readable `message`, and a standard HTTP status. This is NOT RFC 9457 application/problem+json.
required:
- error
- message
properties:
error:
type: string
description: Machine-readable error code.
enum:
- bad_request
- unauthorized
- insufficient_credits
- paid_plan_required
- too_many_requests
- detection_failed
- unavailable
message:
type: string
description: Human-readable message.
additionalProperties: false
DetectionResult:
type: object
title: DetectionResult
description: The result of a single image detection.
required:
- verdict
- ai_score
- confidence
- source_breakdown
properties:
verdict:
type: string
description: Classification result.
enum:
- likely_ai
- likely_human
- uncertain
ai_score:
type: number
format: float
minimum: 0
maximum: 1
description: Probability the image is AI-generated, from 0 to 1.
confidence:
type: string
description: Certainty level of the detection.
enum:
- low
- medium
- high
source_breakdown:
type: array
description: Reserved for future per-generator scores; currently always an empty array.
items: {}
additionalProperties: false
securitySchemes:
BearerAuth:
type: http
scheme: bearer
description: 'Authorization: Bearer sk_your_api_key. API keys are created in Settings -> API Keys and are shown only once at creation. Provide either this or the x-api-key header, not both.'
ApiKeyHeader:
type: apiKey
in: header
name: x-api-key
description: 'x-api-key: sk_your_api_key — alternative to the Authorization header. Provide one of the two.'