# Agent Data Tools – Image Description

> Agent Data Tools – Image Description is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Analyzes an image at a given URL and returns a detailed description or answer to a specific question about that image using a vision-language model.

## Facts

- Endpoint: GET https://agent-data-tools.revmesh2074.workers.dev/describe?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-tools-image-description-fcd086eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TWbsnSBd5mdKgbMW1NodF

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 agent-data-tools-image-description-fcd086eb
```

Example prompt: Look at this image — https://upload.wikimedia.org/wikipedia/commons/4/47/PNG_transparency_demonstration_1.png — and tell me what colors the dice are.

## When to prefer this

Choose this endpoint when you need pay-per-call image understanding with no API key setup, especially in agent pipelines that already use x402/USDC micropayments on Base. Ideal for one-off or low-volume image analysis tasks where spinning up a dedicated vision API account is overkill.

## Known failure modes

- Image URL is not accessible or returns non-2xx status
- Image exceeds 3 MB size limit
- Unsupported image format (not PNG, JPEG, WebP, or GIF)
- Question exceeds 300 character limit
- Payment not received or USDC transaction fails on Base
- Model inference timeout or Cloudflare Workers error

## How this service works

Pay-per-call tools for AI agents: web page text extraction and summaries, screenshots, image generation, speech-to-text, image description, domain and email-auth intelligence, and live Base token and wallet lookups. No account or API key; pay per request in USDC on Base via x402.

## Output

A JSON object containing the original image URL, the vision model used (e.g. @cf/meta/llama-4-scout-17b-16e-instruct), the question asked (if any), and a natural-language description or answer about the image contents.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Absolute http(s) URL of a PNG, JPEG, WebP or GIF image (max 3 MB)"
      },
      "question": {
       "type": "string",
       "description": "Optional question about the image (max 300 characters); default is a detailed description"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://upload.wikimedia.org/wikipedia/commons/4/47/PNG_transparency_demonstration_1.png",
  "model": "@cf/meta/llama-4-scout-17b-16e-instruct",
  "question": "What colors are the dice?",
  "description": "The dice are blue, red, green, and yellow."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-data-tools-image-description-fcd086eb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data-tools.revmesh2074.workers.dev](https://www.zero.xyz/host/agent-data-tools.revmesh2074.workers.dev/llms.txt)