# GEDX402 Vision Describe

> GEDX402 Vision Describe is a paid API for AI agents from ged-x402-media.jvalamis.workers.dev, paid per call via x402, $0.884/call, status unknown (last checked 2026-09-15).

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

## Facts

- Endpoint: GET https://ged-x402-media.jvalamis.workers.dev/v1/vision/describe
- Price: $0.884/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gedx402-vision-describe-a13f01b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0ZtKEZcvy01BRBlrbbjQD

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-a13f01b3
```

Example prompt: Look at this image I'm sending you and describe what's in it — please answer the question 'What objects and scene are visible?' and keep the response under 200 tokens.

## When to prefer this

Choose this endpoint when you need pay-per-call vision AI with no API key setup, want to pay with USDC on Base, Polygon, Arbitrum, World, or Solana, and need a straightforward image-to-text description without managing a subscription or credential rotation.

## Known failure modes

- Invalid or malformed base64 image data causes a 400 error
- Image too large for model context window
- Payment in unsupported token or chain fails the x402 handshake
- max_tokens set too low truncates the description
- Missing image field returns a validation error

## How this service works

x402 workers ai. pay with usdc on base, polygon, arbitrum, world, or solana. no api keys.

## Output

A JSON object with a 'description' field containing a natural language description of the uploaded image, e.g. {"description": "A sunset over mountains."}

## 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-a13f01b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ged-x402-media.jvalamis.workers.dev](https://www.zero.xyz/host/ged-x402-media.jvalamis.workers.dev/llms.txt)