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ForgeMesh HMAC Random Draw
x402
ForgeMesh HMAC Random Draw is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Generates a cryptographically fair random number in a user-specified range using a revealed server seed combined with a client seed, enabling provably fair, verifiable randomness.
Price / call$0.002
Success—
StatusUnknown
How this service works
Cryptographic random number draw with a revealed server seed for after-the-fact verification: combine it with your own client seed to get a number in your chosen range that neither party could have predicted or manipulated in advance. For games, sampling, and fair-assignment logic between untrusted parties.
Output
Returns a random number within the requested min/max range, along with the server seed used in the HMAC computation, so the caller can independently verify the result by combining the server seed with their client seed and confirming the output matches.
Example use cases
Example prompt
“Give me a provably fair random number between 1 and 50 using my client seed 'sunset-42-phoenix' — I need the server seed revealed afterward so I can verify the draw was honest.”
Technical details
Endpoint
POSThttps://x402.forgemesh.io/hmac-random-drawWhen to prefer
Choose this endpoint when you need randomness that is verifiably fair to all parties — neither the server nor the client could have predicted or biased the result in advance. Ideal for games, lotteries, random sampling, or fair assignment logic between untrusted participants. Prefer over a simple random number generator when auditability and provability of fairness are required.
Side effects
- Invalid min/max range (e.g. min >= max) returns a 400 error
- Missing or malformed client_seed may produce unverifiable results
- Payment failure via x402 protocol blocks the request
- Server-side seed generation failure returns a 500 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| max | string | default 100 |
| min | string | default 1 |
| client_seed | string | your seed for verifiability |
Output
Schema · Response
{
"type": "json",
"example": {
"proof": "HMAC-SHA256(server_seed, client_seed) first 4 bytes mod range — recompute to verify",
"value": 4,
"server_seed_revealed": "e3b1..."
}
}Tags
x402
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