ToolVet
77trust / 100

Check Duplicate Image

by Kakerapetit in Security & trust

x402 APIPassing, checked 14 min ago

Check if two images are duplicates or near-duplicates. Compares two image URLs with perceptual hashing and returns a distance score and a same-image verdict. Use to deduplicate photos, detect reposted or copied images, and verify whether two files show the same picture.

POST
https://api.kakerapetit.dev/v1/check-duplicate-image
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
790 ms
1.0 s slowest 5%
Last check
Passed
14 min ago, next in 18 min

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

POST https://api.kakerapetit.dev/v1/check-duplicate-image

Each call costs $0.005 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.kakerapetit.dev/v1/check-duplicate-image
content-type: application/json

{
  "image_url_a": "https://picsum.photos/id/237/320/240",
  "image_url_b": "https://picsum.photos/id/237/240/180"
}

Parameters

ParameterTypeRequiredDescription
image_url_astring (uri)YesHTTPS URL of the first image (jpeg/png/webp/gif, max 10MB).
image_url_bstring (uri)YesHTTPS URL of the second image (jpeg/png/webp/gif, max 10MB).

Example response

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

{
  "dhash_distance": 2,
  "method": "phash+dhash",
  "model": "phash-v1",
  "phash_distance": 0,
  "same_image_likely": true,
  "similarity": 1
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.kakerapetit.dev/v1/check-duplicate-image' \
  -H 'content-type: application/json' \
  --data-raw '{"image_url_a":"https://picsum.photos/id/237/320/240","image_url_b":"https://picsum.photos/id/237/240/180"}'

# 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.kakerapetit.dev/v1/check-duplicate-image' \
  -H 'content-type: application/json' \
  --data-raw '{"image_url_a":"https://picsum.photos/id/237/320/240","image_url_b":"https://picsum.photos/id/237/240/180"}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.kakerapetit.dev%2Fv1%2Fcheck-duplicate-image&method=POST
const res = await pay("https://api.kakerapetit.dev/v1/check-duplicate-image", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "image_url_a": "https://picsum.photos/id/237/320/240",
    "image_url_b": "https://picsum.photos/id/237/240/180"
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
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.kakerapetit.dev/v1/check-duplicate-image",
        json={
            "image_url_a": "https://picsum.photos/id/237/320/240",
            "image_url_b": "https://picsum.photos/id/237/240/180",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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