81trust / 100
Calc
by Calculator in Documents & files
x402 APIPassing, checked 3 h ago
Safely evaluate an arithmetic expression (+ - * / % ^ and parentheses). No code execution - a real parser, not eval.
POST https://agent402.tools/api/calc
Last 30 days
All checks passedSome failedAll failedNot checked
- Uptime
- 100%
- Response time
- 185 ms typical, 185 ms slowest 5%
- Last check
- 3 h ago
- Next check
- any minute now
How to call it
# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/calc" \
-H "content-type: application/json" \
-d '{"expr":"2 + 3 * (4 - 1) ^ 2"}'import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client().register(
"eip155:8453",
new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fcalc
const res = await pay("https://agent402.tools/api/calc", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({"expr":"2 + 3 * (4 - 1) ^ 2"}),
});
console.log(await res.json());Example input
{
"expr": "2 + 3 * (4 - 1) ^ 2"
}Example output
{
"result": 29
}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 |
|---|---|---|---|---|
| 3 h ago | Passed | 402 | 185 ms | $0.001 |
| 8 h ago | Passed | 402 | 230 ms | $0.001 |