ToolVet
73trust / 100

Describe Image

by SiteCheck in Developer tools

x402 APIPassing, checked 4 h ago

Describes an image from an https URL or base64 (JPEG, PNG, GIF or WEBP, up to 4 MB): a short description, visible objects, whether it contains text, and the answer to an optional question. Uses Llama 3.2 11B Vision; the model's answers can be wrong.

POST
https://api.sitecheck-api.workers.dev/api/describe-image
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
813 ms
1.2 s slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.sitecheck-api.workers.dev/api/describe-image

Each call costs $0.003 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.sitecheck-api.workers.dev/api/describe-image
content-type: application/json

{
  "question": "What kind of place is this?",
  "url": "https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg"
}

Parameters

ParameterTypeRequiredDescription
imagestringNoOr base64 image data
questionstringNoOptional question about the image
urlstringNohttps:// image address

Example response

The provider's example. We can't check it without paying.

{
  "answer": null,
  "checkedAt": "2026-10-14T11:01:18.713Z",
  "containsText": null,
  "description": "Based on the image, this appears to be a rural or countryside area, possibly a farm or vineyard, with a mix of greenery, trees, and buildings in the background.",
  "mime": "image/jpeg",
  "model": "@cf/meta/llama-3.2-11b-vision-instruct",
  "objects": [],
  "source": "Llama 3.2 11B Vision (Workers AI)"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.sitecheck-api.workers.dev/api/describe-image' \
  -H 'content-type: application/json' \
  --data-raw '{"question":"What kind of place is this?","url":"https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.sitecheck-api.workers.dev/api/describe-image' \
  -H 'content-type: application/json' \
  --data-raw '{"question":"What kind of place is this?","url":"https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fdescribe-image&method=POST
const res = await pay("https://api.sitecheck-api.workers.dev/api/describe-image", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "question": "What kind of place is this?",
    "url": "https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.sitecheck-api.workers.dev/api/describe-image",
        json={
            "question": "What kind of place is this?",
            "url": "https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg",
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

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4 h agoPassed4021.2 s$0.003
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26 h agoPassed402810 ms$0.003
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43 h agoPassed402813 ms$0.003