Describe or question an image

$0.01 per call · failed calls are never charged · no account or API key needed

Vision model for an image at a public URL: get a detailed description including any visible text, or pass a question to ask something specific about the image. Accepts PNG, JPEG, WebP and GIF up to 3 MB. Use for alt text, OCR-style reading of screenshots, chart reading and content checks.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Inputs

NameTypeDescription
url (required)stringAbsolute http(s) URL of a PNG, JPEG, WebP or GIF image (max 3 MB)
questionstringOptional question about the image (max 300 characters); default is a detailed description

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/describe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2F4%2F47%2FPNG_transparency_demonstration_1.png"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/describe?url=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2F4%2F47%2FPNG_transparency_demonstration_1.png&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum, Monad, World Chain or Tempo) and retries.

Example result

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

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is describe, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

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