ToolVet
79trust / 100

Page Metadata

by Page Metadata in Search & web

x402 APIPassing, checked 1 h ago

Fetch a reviewed public page and return its title, every meta and Open Graph tag, and the canonical URL. No JavaScript is executed and no script content is read. Returns the licence and creator for the content alongside it, so reuse terms travel with the result.

POST
https://api.zfinia.com/x402/v1/page-metadata
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
538 ms
1.1 s slowest 5%
Last check
Passed
1 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.zfinia.com/x402/v1/page-metadata

Each call costs $0.004 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.zfinia.com/x402/v1/page-metadata
content-type: application/json

{
  "url": "https://docs.python.org/3/"
}

Parameters

ParameterTypeRequiredDescription
urlstringYes

Example response

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

Example response, 39 lines
{
  "attribution": {
    "creator": "Python Software Foundation and documentation contributors",
    "licence": "PSF documentation licence",
    "licence_url": "https://docs.python.org/3/license.html",
    "modifications": "Fetched and converted to structured text; formatting simplified.",
    "source": "https://docs.python.org/3/",
    "title": "Python documentation"
  },
  "canonical": "https://docs.python.org/3/",
  "limits": {
    "cell_characters": 2000,
    "cells_per_row": 20,
    "json_ld_blocks": 20,
    "json_ld_characters": 100000,
    "link_text_characters": 300,
    "links": 100,
    "meta_entries": 80,
    "meta_name_characters": 100,
    "meta_value_characters": 2000,
    "page_bytes": 262144,
    "rows_per_table": 50,
    "tables": 10,
    "text_characters": 80000,
    "title_characters": 1000
  },
  "metadata": {
    "description": "The official Python documentation.",
    "og:title": "Python documentation"
  },
  "metadata_count": 2,
  "observed_at": "2026-10-02T00:00:00.000Z",
  "request_id": "example-request",
  "service_id": "page_metadata",
  "service_version": "1.0.0",
  "source_url": "https://docs.python.org/3/",
  "title": "Python documentation",
  "warnings": []
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.zfinia.com/x402/v1/page-metadata' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://docs.python.org/3/"}'

# 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.zfinia.com/x402/v1/page-metadata' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://docs.python.org/3/"}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.zfinia.com%2Fx402%2Fv1%2Fpage-metadata&method=POST
const res = await pay("https://api.zfinia.com/x402/v1/page-metadata", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "url": "https://docs.python.org/3/"
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
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.zfinia.com/x402/v1/page-metadata",
        json={
            "url": "https://docs.python.org/3/",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402560 ms$0.004
6 h agoPassed402576 ms$0.004
11 h agoPassed402618 ms$0.004
15 h agoPassed402626 ms$0.004
20 h agoPassed402565 ms$0.004
Show 10 older checks
25 h agoPassed402510 ms$0.004
29 h agoPassed402535 ms$0.004
33 h agoPassed402460 ms$0.004
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42 h agoPassed402482 ms$0.004
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2 days agoPassed402569 ms$0.004
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3 days agoPassed402540 ms$0.004