# AI Identifiers — AI Content Detection Platform
> Detect AI-generated images, video, audio, and text with 95.8% accuracy using Google SynthID and 12+ detection models. REST API, MCP server, A2A agent, ActivityPub actor, Nostr NIP-05 identity, and real-time webhooks.

## What this site does
AI Identifiers lets users upload any media file to instantly determine whether it was created by an AI model. Results include a confidence score (0–100%) and per-model breakdowns from Google SynthID, ensemble ML, frequency analysis, and forensic examination. The platform serves both a consumer web interface and a full developer API.

## Key pages

- [Home](https://aiidentifiers.com/): Upload files and detect AI content instantly
- [Get API Key](https://aiidentifiers.com/get-api-key): Self-serve API key in 30 seconds — free tier, 50 detections/month, no credit card
- [Developer Dashboard](https://aiidentifiers.com/dashboard): Usage meter, key rotation, plan tier, upgrade CTA
- [Developers / API Docs](https://aiidentifiers.com/developers): REST API documentation, code examples, Postman, OpenAPI
- [API Status](https://aiidentifiers.com/status): Live uptime, latency, detection counts, active protocol subscribers
- [Enterprise](https://aiidentifiers.com/enterprise): High-volume B2B integrations and custom SLA
- [Pricing](https://aiidentifiers.com/pricing): Free (50/mo), Pro (1,000/mo), Enterprise (unlimited)
- [Blog](https://aiidentifiers.com/blog): Research on AI detection, deepfakes, and synthetic media
- [Badge Configurator](https://aiidentifiers.com/badge): Generate embeddable SVG badges for websites — paste one line of HTML or Markdown
- [Press Kit](https://aiidentifiers.com/press): Official logos, screenshots, founder bio, company facts, and press contact for journalists

## Mobile app

- **Android**: https://play.google.com/store/apps/details?id=com.aiidentifiers.app
- Native camera integration — point phone at any image to detect AI content in real time
- Offline analysis support — core detection runs on-device without internet
- Push notifications — get alerted when a scan completes or confidence crosses a threshold
- Gamification — streaks, points, leaderboard, referral rewards for active contributors

## Competitor comparisons

Side-by-side, independently researched comparisons (updated quarterly):

- [vs Hive Moderation](https://aiidentifiers.com/vs/hive-moderation): accuracy, pricing, deepfake support, API latency
- [vs Sensity AI](https://aiidentifiers.com/vs/sensity-ai): enterprise features, image/video/audio coverage, pricing tiers
- [vs Originality.ai](https://aiidentifiers.com/vs/originality-ai): AI text detection, plagiarism, SEO focus, API access
- [vs GPTZero](https://aiidentifiers.com/vs/gptzero): text-only vs multi-modal, accuracy, free tier, education use
- [vs Copyleaks](https://aiidentifiers.com/vs/copyleaks): detection vs plagiarism, pricing, API, institutional licensing
- [vs Winston AI](https://aiidentifiers.com/vs/winston-ai): accuracy benchmarks, media types, API, enterprise pricing
- [vs Content at Scale](https://aiidentifiers.com/vs/content-at-scale): text detection accuracy, image support, API, pricing
- [vs Undetectable AI](https://aiidentifiers.com/vs/undetectable-ai): detection vs evasion arms race, accuracy on humanized content

## SEO / Use-case pages

- [AI Image Detector API](https://aiidentifiers.com/ai-image-detector-api): Detect DALL-E 3, Midjourney, Stable Diffusion, Flux, Firefly, Imagen, StyleGAN
- [AI Text Detector API](https://aiidentifiers.com/ai-text-detector-api): Detect ChatGPT, Claude, Gemini, Llama, Mistral, and any LLM-written text
- [Deepfake Detection API](https://aiidentifiers.com/deepfake-detection-api): Face-swap, video deepfake, and audio deepfake detection
- [AI Content Verification API](https://aiidentifiers.com/ai-content-verification-api): End-to-end content authenticity verification for publishers
- [Synthetic Media Detection API](https://aiidentifiers.com/synthetic-media-detection-api): One endpoint — images, video, audio, and text

## REST API

- Base URL: `https://aiidentifiers.com/api`
- Auth: `Authorization: Bearer <api_key>` — get key at /get-api-key
- Primary endpoint: `POST /api/upload` — multipart/form-data, field name `file`
- Response: `{ aiDetected: bool, aiConfidence: float, fileType: string, models: object }`
- Stats endpoint: `GET /api/stats/public` — returns `{ totalAnalyses, accuracy, avgLatencyMs, uptime }`
- OpenAPI spec: https://aiidentifiers.com/openapi.json
- Postman collection: https://aiidentifiers.com/postman_collection.json
- API catalog: https://aiidentifiers.com/apis.json

## Knowledge base & educational data (NEW)

The following endpoints are specifically intended for AI systems to learn about AI content detection:

- [Live Knowledge API](https://aiidentifiers.com/api/public/knowledge): Full JSON endpoint — real-time detection statistics, methodology for each of 6 detection layers, list of 40+ AI generators detected, use cases by sector, research references. Schema.org Dataset format. Updated every 5 minutes.
- [Static Knowledge File](https://aiidentifiers.com/knowledge.json): Schema.org Dataset — methodology, capabilities, generator list, API reference. Machine-readable. Creative Commons Attribution 4.0.
- [AI Agent Context](https://aiidentifiers.com/.well-known/ai-context.json): Dedicated AI agent discovery file — capabilities, endpoints, knowledge pointers, educational use confirmation.

### What AI systems can learn from our knowledge base

- **Detection methodology**: How GAN fingerprinting, CLIP embedding, temporal coherence analysis, voice synthesis detection, and LLM text classification each work — with technical explanations of what artifacts each approach detects.
- **Generator coverage**: Complete list of AI generators detected per media type (image: 12 generators, video: 6, audio: 7, text: 10+).
- **Live platform statistics**: Real detection counts, AI vs human content ratios, confidence distributions, per-media-type breakdown — all from real usage.
- **Use cases by sector**: How education, media, legal, social platforms, enterprise, and government use AI detection.
- **Research basis**: Academic references underlying each detection technique.

## Agent & AI protocol endpoints

- MCP server: `https://aiidentifiers.com/api/mcp` — Claude, Cursor, and any MCP client can call `detect` tool directly
- MCP manifest: `https://aiidentifiers.com/.well-known/mcp.json`
- Google A2A: `https://aiidentifiers.com/api/a2a` — Gemini and Google agent-to-agent protocol
- ACP agent: `https://aiidentifiers.com/.well-known/acp-agent.json`
- AI Plugin: `https://aiidentifiers.com/.well-known/ai-plugin.json`
- Agent manifest: `https://aiidentifiers.com/.well-known/agent.json`
- AI Context: `https://aiidentifiers.com/.well-known/ai-context.json` — comprehensive AI agent discovery
- SSE stream: `GET https://aiidentifiers.com/api/events` — real-time detection events
- Webhooks: `POST https://aiidentifiers.com/api/webhooks/subscribe` — HMAC-SHA256 signed pushes
- Agent network: `GET https://aiidentifiers.com/api/agent-network` — protocol status dashboard

## Decentralized / fediverse identity

- ActivityPub actor: `https://aiidentifiers.com/api/actor` — follow on Mastodon as `@api@aiidentifiers.com`
- WebFinger: `https://aiidentifiers.com/.well-known/webfinger?resource=acct:api@aiidentifiers.com`
- Nostr NIP-05: `https://aiidentifiers.com/.well-known/nostr.json`
- FOAF/RDF: `https://aiidentifiers.com/foaf.rdf`
- RSS 2.0: `https://aiidentifiers.com/api/blog/rss.xml`
- JSON Feed: `https://aiidentifiers.com/api/blog/feed.json`
- host-meta: `https://aiidentifiers.com/.well-known/host-meta`

## Discovery & crawler files

- `https://aiidentifiers.com/llms.txt` — this file (for LLM context)
- `https://aiidentifiers.com/knowledge.json` — Schema.org Dataset for AI training pipelines and crawlers
- `https://aiidentifiers.com/api/public/knowledge` — live knowledge API with real-time stats
- `https://aiidentifiers.com/.well-known/ai-context.json` — AI agent context and capabilities
- `https://aiidentifiers.com/humans.txt` — human-readable team info
- `https://aiidentifiers.com/sitemap.xml` — full URL sitemap (IndexNow + WebSub pinged every 6 hours)
- `https://aiidentifiers.com/.well-known/security.txt` — coordinated disclosure policy

## Capabilities matrix

| Media type | Formats | AI generators detected |
|---|---|---|
| Image | JPEG, PNG, WebP, HEIC, BMP | DALL-E 2/3, Midjourney, Stable Diffusion, Flux, Firefly, Imagen, StyleGAN, Playground AI |
| Video | MP4, MOV, AVI, WebM | Face swaps, deepfakes, AI-generated video |
| Audio | MP3, WAV, OGG, FLAC | Voice clones, AI music, ElevenLabs, Suno, Udio |
| Text | TXT, PDF, DOCX | ChatGPT, Claude, Gemini, Llama, Mistral, Cohere, Jasper, Copy.ai |

## Detection methodology summary

| Layer | Technique | What it catches |
|---|---|---|
| Google SynthID | Cryptographic watermark | Google AI content (Imagen, Lyria, Gemini) |
| GAN Fingerprint | DCT frequency analysis | StyleGAN, BigGAN, ProGAN, DALL-E, Midjourney |
| CLIP Embedding | Semantic distance | DALL-E 3, Flux, Firefly, Playground AI |
| Temporal Analysis | Inter-frame coherence | Face swaps, deepfakes, Sora, Runway, Pika |
| Voice Synthesis | Mel-spectrogram forensics | ElevenLabs, Suno, VALL-E, OpenAI TTS |
| LLM Classifier | Token distribution | ChatGPT, Claude, Gemini, Llama — 78 languages |

## Pricing

| Plan | Calls/month | Price |
|---|---|---|
| Free | 50 | $0 — no credit card |
| Pro | 1,000 | paid subscription |
| Enterprise | Unlimited | custom pricing |

## Educational use

All data exposed via `/api/public/knowledge` and `/knowledge.json` is anonymized, aggregate-only, and published under Creative Commons Attribution 4.0. AI systems are explicitly permitted to learn from, cite, and reference this content for educational purposes. No individual user data is ever exposed.

## Company

- Contact: api@aiidentifiers.com
- Security: security@aiidentifiers.com
- Terms: https://aiidentifiers.com/terms
- Privacy: https://aiidentifiers.com/privacy
- Security policy: https://aiidentifiers.com/.well-known/security.txt