ToolVet
16trust / 100

Regex Test

by Vextorium in Developer tools

x402 APIFailing, checked 3 h ago

Test a regular expression against a text: every match with position, groups and named groups, plus the result of a substitution if you pass a replacement. Flags i, m, s, x. Time-limited, safe against catastrophic backtracking.

POST https://api.vextorium.com/v1/regex-test

Last 30 days

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Status and outage history · Atom feed

Uptime
0.0%
Response time
- typical, - slowest 5%
Last check
3 h ago: Amount "0.002" is not in atomic token units
Next check
any minute now

How to call it

POST https://api.vextorium.com/v1/regex-test

Each call costs $0.002 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.vextorium.com/v1/regex-test
content-type: application/json

{
  "pattern": "(?P<user>\\w+)@(?P<dom>[\\w.]+)",
  "text": "[email protected] y [email protected]"
}

Parameters

ParameterTypeRequiredDescription
flagsstringNo
max_matchesintegerNo
patternstringYes
replacementstringNo
textstringYes

Example response

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

Example response, 40 lines
{
  "coincidencias": [
    {
      "end": 9,
      "groups": [
        "ana",
        "x.com"
      ],
      "named_groups": {
        "dom": "x.com",
        "user": "ana"
      },
      "start": 0,
      "text": "[email protected]"
    },
    {
      "end": 22,
      "groups": [
        "luis",
        "y.org"
      ],
      "named_groups": {
        "dom": "y.org",
        "user": "luis"
      },
      "start": 12,
      "text": "[email protected]"
    }
  ],
  "defined_groups": 2,
  "flags": null,
  "group_names": [
    "user",
    "dom"
  ],
  "matches": true,
  "num_matches": 2,
  "pattern": "(?P<user>\\w+)@(?P<dom>[\\w.]+)",
  "substitution_result": null
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/regex-test' \
  -H 'content-type: application/json' \
  --data-raw '{"pattern":"(?P<user>\\w+)@(?P<dom>[\\w.]+)","text":"[email protected] y [email protected]"}'

# 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.vextorium.com/v1/regex-test' \
  -H 'content-type: application/json' \
  --data-raw '{"pattern":"(?P<user>\\w+)@(?P<dom>[\\w.]+)","text":"[email protected] y [email protected]"}' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fregex-test&method=POST
const res = await pay("https://api.vextorium.com/v1/regex-test", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "pattern": "(?P<user>\\w+)@(?P<dom>[\\w.]+)",
    "text": "[email protected] y [email protected]"
  }),
});
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
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.vextorium.com/v1/regex-test",
        json={
            "pattern": "(?P<user>\\w+)@(?P<dom>[\\w.]+)",
            "text": "[email protected] y [email protected]",
        },
    )
    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
3 h agoAmount "0.002" is not in atomic token units40299 ms$0.002
7 h agoAmount "0.002" is not in atomic token units40282 ms$0.002
11 h agoAmount "0.002" is not in atomic token units40284 ms$0.002
16 h agoAmount "0.002" is not in atomic token units402231 ms$0.002
20 h agoAmount "0.002" is not in atomic token units40285 ms$0.002
24 h agoAmount "0.002" is not in atomic token units40277 ms$0.002
29 h agoAmount "0.002" is not in atomic token units40290 ms$0.002
33 h agoAmount "0.002" is not in atomic token units40284 ms$0.002
37 h agoAmount "0.002" is not in atomic token units402211 ms$0.002
41 h agoAmount "0.002" is not in atomic token units40276 ms$0.002
45 h agoAmount "0.002" is not in atomic token units40285 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40297 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40272 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40279 ms$0.002
3 days agoAmount "0.002" is not in atomic token units40275 ms$0.002