Dev Regex Tester
by AgentsToolsHub in Developer tools
Test a regular expression against text and see every match: the matched substring, its index, and all capture groups. Deterministic — the same pattern and text always produce the same result, unlike LLM-simulated regex matching. Use this when an agent needs to pattern + text → every match, group and index.
https://agentstoolshub.com/api/v1/dev/regex-tester- Price
- $0.002
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 154 ms
- 202 ms slowest 5%
- Last check
- Passed
- 43 min ago, next any minute now
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
GET https://agentstoolshub.com/api/v1/dev/regex-tester
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.
GET https://agentstoolshub.com/api/v1/dev/regex-tester?flags=g&pattern=%5B%5Cw.%2B-%5D%2B%40%5B%5Cw-%5D%2B%5C.%5B%5Cw.%5D%2B&text=Contact+jane%40acme.io+or+bob%40test.org+todayParameters
| Parameter | Type | Required | Description |
|---|---|---|---|
flags | string | No | Flags |
pattern | string | Yes | Pattern |
text | string | Yes | Text to test |
Example response
The provider's example. We can't check it without paying.
Example response, 37 lines
{
"result": {
"answer": "2 matches",
"answerLabel": "/[\\w.+-]+@[\\w-]+\\.[\\w.]+/",
"artifacts": {
"matches": "[{\"match\":\"[email protected]\",\"index\":8,\"groups\":[]},{\"match\":\"[email protected]\",\"index\":24,\"groups\":[]}]"
},
"steps": [
"Pattern: /[\\w.+-]+@[\\w-]+\\.[\\w.]+/g",
"2 match(es) found, full list in result.artifacts.matches"
],
"table": {
"columns": [
"#",
"Match",
"Index",
"Capture groups"
],
"rows": [
[
1,
"[email protected]",
8,
"—"
],
[
2,
"[email protected]",
24,
"—"
]
]
},
"value": 2
},
"tool": "regex-tester"
}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 'https://agentstoolshub.com/api/v1/dev/regex-tester?flags=g&pattern=%5B%5Cw.%2B-%5D%2B%40%5B%5Cw-%5D%2B%5C.%5B%5Cw.%5D%2B&text=Contact+jane%40acme.io+or+bob%40test.org+today'
# 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 - 'https://agentstoolshub.com/api/v1/dev/regex-tester?flags=g&pattern=%5B%5Cw.%2B-%5D%2B%40%5B%5Cw-%5D%2B%5C.%5B%5Cw.%5D%2B&text=Contact+jane%40acme.io+or+bob%40test.org+today' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: 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%2Fagentstoolshub.com%2Fapi%2Fv1%2Fdev%2Fregex-tester
const res = await pay("https://agentstoolshub.com/api/v1/dev/regex-tester?flags=g&pattern=%5B%5Cw.%2B-%5D%2B%40%5B%5Cw-%5D%2B%5C.%5B%5Cw.%5D%2B&text=Contact+jane%40acme.io+or+bob%40test.org+today");
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.get("https://agentstoolshub.com/api/v1/dev/regex-tester?flags=g&pattern=%5B%5Cw.%2B-%5D%2B%40%5B%5Cw-%5D%2B%5C.%5B%5Cw.%5D%2B&text=Contact+jane%40acme.io+or+bob%40test.org+today")
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
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 43 min ago | Passed | 402 | 143 ms | $0.002 |
| 4 h ago | Passed | 402 | 202 ms | $0.002 |
| 7 h ago | Passed | 402 | 141 ms | $0.002 |
| 10 h ago | Passed | 402 | 144 ms | $0.002 |
| 13 h ago | Passed | 402 | 177 ms | $0.002 |
Show 8 older checks
| 17 h ago | Passed | 402 | 174 ms | $0.002 |
| 22 h ago | Passed | 402 | 173 ms | $0.002 |
| 27 h ago | Passed | 402 | 151 ms | $0.002 |
| 32 h ago | Passed | 402 | 183 ms | $0.002 |
| 38 h ago | Passed | 402 | 148 ms | $0.002 |
| 43 h ago | Passed | 402 | 198 ms | $0.002 |
| 2 days ago | Passed | 402 | 154 ms | $0.002 |
| 2 days ago | Passed | 402 | 146 ms | $0.002 |