# StableDetect Text AI Detection

> StableDetect Text AI Detection is a paid API for AI agents from stabledetect.dev, paid per call via x402, $5/call, status down (last checked 2026-09-15).

Classifies a text sample as AI-generated, AI-assisted, or human-written using pay-per-call detection inference.

## Facts

- Endpoint: POST https://stabledetect.dev/api/detect/text
- Price: $5/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stabledetect-text-ai-detection-7a99e3d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_evG-tmxtVlFAfrOyx6MlW

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability stabledetect-text-ai-detection-7a99e3d1 -d '<json body>'
```

Example prompt: Can you run this blog post through StableDetect and tell me whether it's AI-generated, AI-assisted, or human-written? Here's the text: 'The future of renewable energy hinges on breakthrough storage technologies that can make solar and wind viable at grid scale...'

## When to prefer this

Choose this endpoint when you need a pay-per-call, no-subscription AI content authenticity check on text — especially useful for one-off verification tasks, academic integrity checks, content moderation pipelines, or when you need to distinguish between fully AI-generated vs. AI-assisted vs. fully human-written content rather than just a binary flag.

## Known failure modes

- Text too short for reliable classification — minimum length requirements not met
- Insufficient funds or USDC payment failure — endpoint returns payment error
- Empty or null text body — returns validation error
- Rate limiting or quota exceeded — returns 429 or payment-related error
- Text in unsupported language — may return low-confidence or error response

## How this service works

Pay-per-call AI content detection. Classify text as AI-generated, AI-assisted, or human-written, and detect AI-generated or deepfake images and video.

## Output

A classification of the submitted text as AI-generated, AI-assisted, or human-written, typically accompanied by a confidence score or probability breakdown for each category.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "text",
      "publicDashboardLink"
     ],
     "properties": {
      "text": {
       "type": "string",
       "maxLength": 3500000,
       "minLength": 1,
       "description": "Text passage to classify. Minimum 50 words, maximum 200,000 words. Price is $0.05 per started 1,000 words. Documents over 10,000 words are analyzed as parallel chunks and merged."
      },
      "publicDashboardLink": {
       "type": "boolean",
       "default": false,
       "description": "Include a shareable pangram.com dashboard link for this analysis in the response."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stabledetect-text-ai-detection-7a99e3d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stabledetect.dev](https://www.zero.xyz/host/stabledetect.dev/llms.txt)