# GEDX402 Vision Describe

> GEDX402 Vision Describe is a paid API for AI agents from media.gedx402.com, paid per call via x402, $0.884/call, status unknown (last checked 2026-09-14).

Analyzes a base64-encoded image and returns a natural language description using a vision AI model, paid per-call via USDC on multiple chains.

## Facts

- Endpoint: GET https://media.gedx402.com/v1/vision/describe
- Price: $0.884/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gedx402-vision-describe-153e34fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Uq5Eyhn7lp7dh4xRAwl6X

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 gedx402-vision-describe-153e34fe
```

Example prompt: Describe what's in this image for me — here's the base64-encoded photo — and specifically answer: are there any people visible? Limit the response to 200 tokens.

## When to prefer this

Choose this endpoint when you need no-signup, pay-per-call image description via USDC crypto payment on Base, Polygon, Arbitrum, World, or Solana — especially useful for agents that need vision AI without managing API keys or subscriptions.

## Known failure modes

- Invalid or malformed base64 image data returns an error
- Image too large may exceed processing limits
- Payment failure on-chain results in 402 response before processing
- Unsupported image format may cause decoding errors
- max_tokens set too low may truncate the description

## How this service works

Describe or answer questions about an image with Llama 3.2 11B Vision Instruct (@cf/meta/llama-3.2-11b-vision-instruct). POST image (base64) plus optional prompt; multimodal pricing includes image and text neurons.

## Output

A JSON object with a 'description' field containing a natural language description of the image contents, optionally guided by the prompt provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "image": {
   "type": "string"
  },
  "prompt": {
   "type": "string"
  },
  "max_tokens": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "description": "A sunset over mountains."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gedx402-vision-describe-153e34fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from media.gedx402.com](https://www.zero.xyz/host/media.gedx402.com/llms.txt)