Starter
$2,000
per month · 1M classifications
- Image + text moderation
- CSAM (PhotoDNA + in-house)
- Age estimation
- NSFW label classifier
- Standard support
500M+ items screened · PhotoDNA + custom · NDA on requestNSFW Moderation API
NSFW Moderation API
CSAM screening, classification, age estimation, audit
Production REST endpoint for adult-platform content moderation. CSAM hash matching (PhotoDNA + in-house), age estimation, NSFW classification (granular labels), text safety scanning, voice-clone abuse detection. Built for the adult niche — not a sanitised mainstream tool. Used by 40+ adult platforms screening 500M+ items per month.
TL;DR
NSFW Coders’ NSFW Moderation API is a production endpoint for adult-platform content safety. CSAM hash matching (PhotoDNA + in-house), age estimation, NSFW classification with granular labels, text safety, voice-clone abuse detection. Built for the adult niche — understands the difference between consensual adult content and content that must be refused. Sub-150ms latency, 99.99% accuracy on CSAM detection, audit log on every call. Starting at $2,000/month for 1M classifications. Used by 40+ adult platforms screening 500M+ items per month.
Definition
What is a NSFW Moderation API?
A NSFW Moderation API is a content-safety endpoint built for adult platforms. You send an image, video frame, audio, or text and the API returns safety classifications: CSAM (must refuse), age estimate, NSFW label set (nudity, sexual act, fetish category, violence), text safety flags (minor mentions, non-consent indicators, crisis signals).
It is purpose-built for the adult niche. Generic moderation tools (AWS Rekognition, Azure Content Safety, OpenAI Moderation) classify all adult content as “unsafe” and block everything — useless for a platform that legitimately handles consensual adult content. Our API understands the distinction and produces granular labels you can act on: refuse the truly dangerous (CSAM, minor, non-consent), allow the consented adult content.
Under the hood it runs PhotoDNA hash matching (the industry-standard CSAM database), in-house perceptual hash database, age-estimation models, multi-label NSFW classifiers (NudeNet-derived, fine-tuned on adult-platform datasets), text safety classifiers, and voice-clone abuse detection. All in one API call, sub-150ms latency.
Who uses NSFW Moderation APIs?
- AI companion apps — Run every chat message + every generated image through moderation before delivering to user
- Creator-economy platforms — OnlyFans / Fansly-style sites screening every upload from creators + every user-submitted custom request
- Adult content marketplaces — Screen every piece of content before listing — CSAM compliance is mandatory in every jurisdiction
- Cam & live-stream — Real-time frame-by-frame screening during live streams to halt CSAM / minor content immediately
- Adult chat platforms — Janitor / CrushOn-style sites screening user-created characters + every message in chat
- Image / video gen APIs — Our own NSFW Image, Video, Undress, Face Swap APIs all run every output through this same moderation layer
How is NSFW Coders’ API different?
- Adult-niche label set — Granular NSFW labels — not just “safe” / “unsafe”. Lets you allow consented adult content while refusing CSAM and edge cases
- PhotoDNA + in-house CSAM — Industry-standard CSAM hash database plus our private perceptual-hash extensions caught from real production
- Age estimation built-in — Per-face age estimation with confidence bands. Hard-fail thresholds you can set per region (UK 18+, Germany strict, etc.)
- Text safety for adult chat — Detects minor mentions, non-consent indicators, self-harm signals, predator-grooming patterns — tuned for adult chat context
- Voice-clone abuse detection — Checks input voice samples against protected-voice database before allowing voice cloning
- Full audit log — Every classification logged with input hash, scores, decision, timestamp. Queryable for legal review
500M+
Items screened monthly through our API
40+
Adult platforms relying on this API
<150ms
Classification latency per request
99.99%
CSAM detection accuracy
Features & capabilities
9 moderation capabilities — images, videos, audio, text, voice-clones
One endpoint, all media types — pick the modes you need per request.
01
CSAM Hash Matching
PhotoDNA (Microsoft) + in-house perceptual hash database. Hard-fail on match. Required for every adult platform.
02
Age Estimation
Per-face age estimation with confidence bands. Hard-fail thresholds configurable per region.
03
NSFW Label Classifier
Multi-label classifier: nudity, sexual act, fetish category, violence, drugs. Tune thresholds per platform policy.
04
Text Safety (Adult)
Minor-mention detection, non-consent indicators, crisis / self-harm signals, predator-grooming patterns.
05
Voice-Clone Abuse Check
Input voice samples checked against protected-voice database before allowing voice cloning operations.
06
Live-Frame Screening
Real-time frame-by-frame screening for live streams. Halts CSAM / minor content within 2 frames of appearance.
07
Watermark Verification
Checks for our embedded watermarks on incoming content — useful for re-upload abuse detection.
08
Audit Log API
Every classification logged with input hash, scores, decision, user ID, timestamp. Queryable / exportable.
09
Geo-Policy Routing
UK Online Safety Act, EU DSA, US state-by-state — geo-aware policy thresholds per request.
Why clients trust us
Production-ready NSFW Moderation API deployment
Scalable infrastructure, predictable cost, guaranteed uptime — your API runs the way production needs it to.
01
99.99% CSAM Detection
PhotoDNA + in-house hash extensions. Independent third-party tested. False-negative rate <0.01%.
02
<150ms Classification Latency
In-memory hash lookup + cached models. Suitable for real-time chat + live-stream screening.
03
Audit Log for Legal Review
Every call logged. Queryable / exportable for legal teams, regulators, payment processor compliance.
04
Geo-Policy Engine
UK / EU / US-state aware. Same API, different policy thresholds per request based on user geo.
Quick start
Integrate in 3 lines of code
Standard REST API — works with any language. Below: cURL, Python, and Node.js.
cURL
curl -X POST https://api.nsfwcoders.com/v1/moderate/image \
-H 'Authorization: Bearer YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{
"image_url": "https://your-cdn.com/uploads/abc.jpg",
"checks": ["csam", "age", "nsfw_labels"],
"geo": "uk"
}' Python
from nsfwcoders import Client
client = Client(api_key='YOUR_API_KEY')
result = client.moderate.image(
image_url='https://your-cdn.com/uploads/abc.jpg',
checks=['csam', 'age', 'nsfw_labels'],
geo='uk',
)
if result.csam.matched or result.age.estimate < 18:
raise Exception('Content refused: ' + result.decision_reason)
print(result.nsfw_labels) # {'nudity': 0.94, 'sexual_act': 0.31, ...} Node.js
import { NSFWCoders } from '@nsfwcoders/sdk';
const client = new NSFWCoders({ apiKey: process.env.NSFW_API_KEY });
const result = await client.moderate.image({
image_url: 'https://your-cdn.com/uploads/abc.jpg',
checks: ['csam', 'age', 'nsfw_labels'],
geo: 'uk',
});
if (result.csam.matched || result.age.estimate < 18) {
throw new Error('Content refused: ' + result.decision_reason);
} Use cases
Where this API drives revenue
Common production patterns where the NSFW Moderation API ships measurable ROI.
Use case 1
Adult Chat Message Screening
Run every user + AI message through text safety + CSAM-in-text check before delivery.
Use case 2
Creator Upload Screening
OnlyFans / Fansly-style platforms screening every upload before publication. Required for payment-processor compliance.
Use case 3
AI Image Output Screening
Run every AI-generated image through CSAM + age + label classification before returning to user.
Use case 4
Live-Stream Frame Screening
Cam platforms screening live frames to halt CSAM / minor appearance in real time (2-frame detection).
Use case 5
Voice-Clone Abuse Prevention
Check voice samples against protected-voice database before allowing TTS voice cloning operations.
Use case 6
Audit & Legal Compliance
Maintain audit logs queryable by legal teams for payment processor, DMCA, regulator requests.
Hosting & deployment
Pick the GPU platform that fits your budget
RunPod
GPU pods with autoscaling — ideal for bursty moderation traffic patterns.
Lambda Labs
H100 instances for high-throughput live-stream frame screening.
AWS / GCP private
Deploy inside your account for clients with strict data-residency requirements.
Dedicated GPU Cluster
Multi-region pools for 100M+ moderations/month workloads with priority queue.
On-Premise
Air-gapped deploy for clients with mandatory on-premise compliance (some EU + APAC regulators).
Build with this API
Live products that already use it
Pre-built clones, companion apps and white-label platforms you can launch in 30–60 days.
Adult Business Registration
Combine legal entity setup with moderation API for a complete compliance stack.
See the page →AI Companion App Development
Production AI companion apps that ship with this moderation layer built in.
See the page →AI OnlyFans Clone
Creator platform with mandatory upload screening using this API.
See the page →Pricing
Fixed monthly cost, no surprise GPU bills
Pick the tier that fits your launch — we handle GPU pool, scaling, monitoring, uptime SLA.
Pro
$5,000
per month · 10M classifications
- All starter tier features
- Video frame + audio moderation
- Voice-clone abuse detection
- Live-stream screening API
- Priority queue + SLA
Enterprise
Custom
per month · unlimited
- On-premise / air-gapped option
- Custom hash database integration
- Geo-policy engine + legal review
- Dedicated infrastructure
- NDA + DPA + on-call engineering
Every tier ships with: NDA before kickoff · 100% source-code ownership · 99.9% uptime SLA · 90 days post-launch support
FAQ
Questions about the NSFW Moderation API
What is a NSFW Moderation API?
A NSFW Moderation API is a content-safety endpoint built for adult platforms. You send an image, video frame, audio, or text and the API returns safety classifications: CSAM (must refuse), age estimate, NSFW label set (nudity, sexual act, fetish category, violence), text safety flags (minor mentions, non-consent, crisis signals). Built for adult platforms that legitimately handle consensual adult content while refusing CSAM and edge cases.
How is this different from AWS Rekognition or Azure Content Safety?
Generic moderation tools classify all adult content as “unsafe” and block everything — useless for a platform that legitimately handles consented adult content. Our API uses an adult-niche label set: granular categories like “nudity”, “sexual act”, “fetish category”, “CSAM”, “minor mention in text”, “non-consent indicator” — you can allow what is allowed in your jurisdiction and refuse what must always be refused.
How accurate is the CSAM detection?
99.99% accuracy with <0.01% false-negative rate (third-party tested). We use Microsoft PhotoDNA (the industry-standard CSAM hash database) plus our in-house perceptual hash database. CSAM detection is hard-fail — if any layer matches, the API refuses the request regardless of other parameters.
What is the latency?
Sub-150ms per classification on the Starter tier, typically 80-120ms on Pro. In-memory hash lookup for CSAM (immediate), cached models for NSFW classifier + age estimation. Suitable for real-time chat screening and live-stream frame screening (we hit 30 frames/sec on Pro tier).
How much does the NSFW Moderation API cost?
Starter is $2,000/month for 1M classifications with image + text moderation, CSAM, age estimation, NSFW labels. Pro is $5,000/month for 10M classifications with video + audio + voice-clone abuse detection + live-stream API. Enterprise is custom — on-premise, air-gapped, custom hash databases, geo-policy engine.
Can the API handle live-stream screening in real time?
Yes — on the Pro tier. We process frames at 30fps with a 2-frame detection window for CSAM / minor content. When triggered, the API returns a hard-fail decision your stream platform can use to halt the stream within 100ms. Critical for cam-platform compliance.
Does the API support geo-specific policies?
Yes. Pass the user’s geo per request and the API applies the right policy thresholds. UK Online Safety Act, EU Digital Services Act, US state-by-state (Texas, Virginia, California have specific rules), Germany’s strict adult content rules — all encoded in the geo-policy engine. Same API, region-aware behaviour.
What is in the audit log?
Every classification logged with: input hash (not the input itself, for GDPR), classification scores, final decision, user ID, IP, timestamp, geo, policy version. Queryable + exportable. Used by legal teams for payment-processor compliance reviews, DMCA disputes, regulator requests.
Do you sign NDAs?
Always. NDA before discovery call. For Enterprise tier we sign DPAs, offer source-code escrow, and provide compliance attestations + third-party CSAM testing reports for legal review. Your moderation thresholds, audit access, user data stay inside the engagement.
Can the API scale for production?
Yes. Production deployments handle 500M+ classifications per month across multiple clients. Kubernetes-based autoscaling, multi-region GPU pools, hash database sharded by geographic region. Tested up to 50K concurrent moderation requests on a single Pro deployment.
Ready to integrate the NSFW Moderation API?
Free 30-min API walkthrough. NDA on request. Average reply under 4 hours.
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