Screenshot

Screenshot any public URL in headless Chromium. Send GET /api/screenshot with the required field url and pay $0.004 per call over x402 or MPP (there is no free tier). It returns raw bytes, not JSON, with Content-Type image/png.

Returns a PNG image. Use when you need VISUAL evidence (layout, charts, a rendered receipt); when you need the text, extract or render are cheaper and machine-readable.

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Parameters

Example request

curl -i "https://agent402.tools/api/screenshot?url=https%3A%2F%2Fagent402.tools&fullPage=false"

Without payment this returns HTTP 402 Payment Required with the exact price for screenshot; any x402 v2 or MPP client pays it and retries.

Example response

A 200 carries raw bytes, not JSON, with Content-Type image/png: the file itself.

From an MCP client

catalog.call {
  "slug": "screenshot",
  "params": {
    "url": "https://agent402.tools",
    "fullPage": "false"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for screenshot; the stdio package pays it from a wallet or from an AGENT402_CREDITS_KEY issued earlier. Local install: npx -y agent402-mcp.

Errors and behavior

• url is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is canceled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A POST with a JSON body to /api/screenshot is served as this GET, with the body as the input.
• An Idempotency-Key header does not replay this tool's answer: the replay cache holds JSON answers only, so a retried paid call runs and is charged again.

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.({ maxAmountPerPayment: "$0.004" }); // refuse any quote above this tool's price
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/screenshot?url=https%3A%2F%2Fagent402.tools&fullPage=false");

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