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OpenRNG VDF Random Number Generator
x402
OpenRNG VDF Random Number Generator is a paid API for AI agents from x402.openrng.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns a cryptographically verifiable random number backed by Verifiable Delay Function (Wesolowski 2048-bit) proof with sub-2ms pool-served latency
Price / call$0.001
Success—
StatusUnknown
How this service works
Cryptographically verifiable random number. VDF-proven entropy (Wesolowski 2048-bit), pool-served sub-2ms latency.
Output
A cryptographically verifiable random number accompanied by a Wesolowski VDF proof (2048-bit), allowing independent verification that the entropy was not manipulated. Delivered with sub-2ms pool-served latency.
Example use cases
Provably fair lottery draw
“I need a tamper-proof random number to pick the winner of my lottery — give me one with a cryptographic proof so participants can verify the draw was fair.”
On-chain randomness seed
“Fetch me a VDF-proven random seed I can use as unpredictable entropy for my smart contract — something with a Wesolowski proof attached so it can't be gamed.”
Unbiased random assignment for research
“I'm randomly assigning participants to study groups and need a verifiable random number with a cryptographic proof that the selection wasn't manipulated.”
Technical details
Endpoint
GEThttps://x402.openrng.io/v1/rng/latestWhen to prefer
Choose this endpoint when you need cryptographically verifiable randomness with an attached VDF proof (Wesolowski 2048-bit) that any party can independently verify — ideal for provably fair games, lotteries, on-chain randomness seeds, or any use case requiring tamper-proof, trustless entropy. Prefer over pseudo-random generators when auditability and non-manipulability are required. The sub-2ms latency makes it suitable for real-time applications.
Side effects
- Payment not received or x402 payment protocol failure — returns 402 Payment Required
- Service unavailable or pool exhausted — returns 503
- Malformed request — returns 400 with error detail
- Network timeout exceeding SLA — no result returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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