Tool detail

Verifiable Randomness

Returns cryptographically-secure random bytes or a uniform random integer in a range, with a signed request receipt.

Categories: Utilities

Use when

get verifiable random bytes for a fair draw
generate a uniform random integer within a min/max range

Not for

not a seeded or reproducible PRNG
not provable fairness over time — use /rand/commit for commit-reveal

Inputs

GET query param: bytes (string, required, 1-256); optional min, max for a ranged integer

Admitted input schema

{
  "type": "object",
  "properties": {
    "bytes": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096
    }
  },
  "required": [
    "bytes"
  ],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://x402.shizu.me/rand

Payment

Protocol: x402
Listed price: 0.003 USDC per request on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://x402.shizu.me/rand
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z