ToolVet
78trust / 100

Css Select

by agentshelf.syntexa.ch in Search & web

x402 APIPassing, checked 22 min ago

Call when an agent needs text and attributes extracted with caller-supplied CSS selectors from a public page or HTML. Use it to pull specific nodes such as prices, links, or headings. SSRF-safe, with a node cap. Send JSON {"html":"<a class=\"x\" href=\"https://example.com/a\">Hello</a>","selectors":[{"selector":"a.x","attribute":"href"}],"limit":5}. Exact $0.004 USDC on Base. Try unpaid POST /v1/sandbox/css-select first.

POST
https://agentshelf.syntexa.ch/v1/css-select
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
33 ms
165 ms slowest 5%
Last check
Passed
22 min ago, next in 11 min

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://agentshelf.syntexa.ch/v1/css-select

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://agentshelf.syntexa.ch/v1/css-select
content-type: application/json

{
  "html": "<a class=\"x\" href=\"https://example.com/a\">Hello</a>",
  "limit": 5,
  "selectors": [
    {
      "attribute": "href",
      "selector": "a.x"
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
htmlstringNoHTML to query locally. Provide html or url. When both are set, html is used.
limitintegerNoMaximum nodes returned per selector, from 1 to 50. Default 20.
selectorsarray of objectYesOne to eight CSS selectors. Each may name an attribute to extract.
urlstringNoPublic page to fetch. Provide url or html. Private hosts are rejected.

Example response

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

{
  "billed": true,
  "matches": [
    {
      "attribute": "href",
      "nodes": [
        {
          "attributes": {
            "href": "https://example.com/a"
          },
          "text": "Hello"
        }
      ],
      "selector": "a.x"
    }
  ],
  "ok": true,
  "receipt_id": "rcpt_01EXAMPLE000000000000000",
  "truncated": false,
  "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://agentshelf.syntexa.ch/v1/css-select' \
  -H 'content-type: application/json' \
  --data-raw '{"html":"<a class=\"x\" href=\"https://example.com/a\">Hello<\/a>","limit":5,"selectors":[{"attribute":"href","selector":"a.x"}]}'

# 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://agentshelf.syntexa.ch/v1/css-select' \
  -H 'content-type: application/json' \
  --data-raw '{"html":"<a class=\"x\" href=\"https://example.com/a\">Hello<\/a>","limit":5,"selectors":[{"attribute":"href","selector":"a.x"}]}' \
  | 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%2Fagentshelf.syntexa.ch%2Fv1%2Fcss-select&method=POST
const res = await pay("https://agentshelf.syntexa.ch/v1/css-select", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "html": "<a class=\"x\" href=\"https://example.com/a\">Hello<\/a>",
    "limit": 5,
    "selectors": [
      {
        "attribute": "href",
        "selector": "a.x"
      }
    ]
  }),
});
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://agentshelf.syntexa.ch/v1/css-select",
        json={
            "html": "<a class=\"x\" href=\"https://example.com/a\">Hello</a>",
            "limit": 5,
            "selectors": [
                {
                    "attribute": "href",
                    "selector": "a.x",
                },
            ],
        },
    )
    print(res.status_code, res.text)

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Recent checks

WhenResultHTTPTimePrice
22 min agoPassed40283 ms$0.004
5 h agoPassed40236 ms$0.004
10 h agoPassed40229 ms$0.004
14 h agoPassed40230 ms$0.004
18 h agoPassed40296 ms$0.004
Show 10 older checks
22 h agoPassed40284 ms$0.004
26 h agoPassed40231 ms$0.004
31 h agoPassed402109 ms$0.004
35 h agoPassed40231 ms$0.004
39 h agoPassed40231 ms$0.004
44 h agoPassed40230 ms$0.004
2 days agoPassed40233 ms$0.004
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3 days agoPassed40299 ms$0.004