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Is Prime
by Primality Check for Agents in Onchain & crypto
x402 APIPassing, checked 1 h ago
Primality check. Call for teaching demos, ID heuristics, or lightweight number filters (bounded integers). Returns whether n is prime with a clear boolean field. $0.001 USDC per successful call via x402 on Base or Solana—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.
POST https://api.delx.ai/api/v1/x402/is-prime
Last 30 days
All checks passedSome failedAll failedNot checked
- Uptime
- 100%
- Response time
- 5 ms typical, 5 ms slowest 5%
- Last check
- 1 h ago
- Next check
- any minute now
How to call it
# See the payment challenge (nothing is charged)
curl -i -X POST "https://api.delx.ai/api/v1/x402/is-prime" \
-H "content-type: application/json" \
-d '{"n":42}'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%2Fapi.delx.ai%2Fapi%2Fv1%2Fx402%2Fis-prime
const res = await pay("https://api.delx.ai/api/v1/x402/is-prime", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({"n":42}),
});
console.log(await res.json());Example input
{
"n": 42
}Example output
{
"is_prime": false,
"n": 42,
"schema": "delx/is-prime/v1"
}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 |
|---|---|---|---|---|
| 1 h ago | Passed | 402 | 10 ms | $0.001 |
| 7 h ago | Passed | 402 | 5 ms | $0.001 |