# Quartermaster Image Description (AI Vision + OCR)

> Quartermaster Image Description (AI Vision + OCR) is a paid API for AI agents from quartermaster.surewhynot.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Uses AI vision to describe any public image and extract visible text (OCR-lite) via a GET request with an image URL.

## Facts

- Endpoint: GET https://quartermaster.surewhynot.app/v1/describe-image
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quartermaster-image-description-ai-vision-ocr-10d073ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_62EcLozyg2sxHclvcZ5rv

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 quartermaster-image-description-ai-vision-ocr-10d073ff
```

Example prompt: Describe what's in this image for me, including any visible text: https://example.com/product-label.jpg — what does it show and what does it say?

## When to prefer this

Use this endpoint when you need to describe, analyze, or extract visible text from a publicly accessible image given only its URL. Ideal for AI agents that need quick vision analysis or lightweight OCR without integrating a full vision API. Prefer this over general-purpose vision APIs when cost-per-call simplicity and x402 micropayment billing are desired.

## Known failure modes

- Image URL is not publicly accessible or returns a non-200 status — endpoint cannot fetch the image
- Image exceeds 3MB size limit — request rejected
- URL does not point to a valid image format — parsing error
- Image contains no readable text when OCR is expected — empty text output
- Network timeout fetching the remote image — transient failure
- Payment of 0.005 USDC not completed — 402 response blocking access

## How this service works

AI vision: describe any public image, including visible text (OCR-lite).

## Output

A natural-language description of the image's visual content, including any text that appears in the image (OCR-lite extraction), optionally answering a custom question about the image if a prompt was provided.

## 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",
       "format": "uri",
       "description": "Public image URL (max 3MB)"
      },
      "prompt": {
       "type": "string",
       "description": "Optional custom question about the image"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quartermaster-image-description-ai-vision-ocr-10d073ff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quartermaster.surewhynot.app](https://www.zero.xyz/host/quartermaster.surewhynot.app/llms.txt)