ToolVet
82trust / 100

Burn Once Secret Vault

by burn-once-secret-vault.jannioura.workers.dev in Onchain & crypto

x402 APIPassing, checked 18 min ago

Store a secret (API key, webhook payload, signed URL) encrypted with WebCrypto AES-256-GCM and share a claim URL that yields the secret exactly once. A Durable Object serializes reads so single-use delivery is race-free, and every burn returns an Ed25519-signed attestation. Creating a vault requires x402 payment; the recipient's claim read (GET /v/:vault_id) is free.

POST https://burn-once-secret-vault.jannioura.workers.dev/

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
275 ms typical, 275 ms slowest 5%
Last check
18 min ago
Next check
in 13 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://burn-once-secret-vault.jannioura.workers.dev/" \
  -H "content-type: application/json" \
  -d '{"secret":"sk_live_example_api_key","ttl_seconds":3600}'
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%2Fburn-once-secret-vault.jannioura.workers.dev%2F
const res = await pay("https://burn-once-secret-vault.jannioura.workers.dev/", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"secret":"sk_live_example_api_key","ttl_seconds":3600}),
});
console.log(await res.json());

Example input

{
  "secret": "sk_live_example_api_key",
  "ttl_seconds": 3600
}

Example output

{
  "burns_after": 1,
  "claim_url": "https://burn-once-secret-vault.jannioura.workers.dev/v/vlt_80603d3e",
  "expires_at": "2026-09-23T19:18:32.093Z",
  "receipt_key": "https://burn-once-secret-vault.jannioura.workers.dev/v/vlt_80603d3e/receipt-key",
  "vault_id": "vlt_80603d3e"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
18 min agoPassed402275 ms$0.01
5 h agoPassed402288 ms$0.01