Verifiable Random Tools
Verifiable Random dice — unbiased dice rolls bound to a future drand round the server waits for (typically 3-6s) and verifies locally, with a reproducible proof transcript.
Offering
- Provider
- verifiable-random.use.x402atlas.com
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Security
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://verifiable-random.use.x402atlas.com/dice- MIME type
- Not provided
- First seen
- 2026-10-16T01:50:10.647Z
- Last seen
- Tags
- verifiable-random, dice-roll, random-number, drand, fair-randomness
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact - Payment option 2
- 0.005 USDC
Atomic price: 5000 · Network: eip155:137 · Asset: USDC · Scheme: exact - Payment option 3
- 0.005 USDC
Atomic price: 5000 · Network: eip155:42161 · Asset: USDC · Scheme: exact - Payment option 4
- 0.005 USDC
Atomic price: 5000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2"
},
{
"scheme": "exact",
"network": "eip155:137",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"amount": "5000",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2"
},
{
"scheme": "exact",
"network": "eip155:42161",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"amount": "5000",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2"
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "5000",
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ"
}
]Observed health
- Status
- Reachable
- Latest latency
- 11 ms
- Average latency
- 14 ms
- HTTP status
- 405
- Last checked
- Reachability
- 100% over 12 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"description": "Dice request bound to a future drand round.",
"properties": {
"algorithm_version": {
"default": "drand-hkdf-sha256-v1",
"description": "Optional version guard; when supplied it must match the server's pinned derivation algorithm.",
"enum": [
"drand-hkdf-sha256-v1"
],
"type": "string"
},
"client_seed": {
"default": "",
"description": "Optional public domain-separation label, not secret entropy.",
"maxLength": 256,
"type": "string"
},
"count": {
"description": "Number of independent dice to roll.",
"maximum": 1000,
"minimum": 1,
"type": "integer"
},
"sides": {
"description": "Number of equally likely faces on each die; returned values range from 1 through sides.",
"maximum": 1000000000,
"minimum": 2,
"type": "integer"
},
"target_round": {
"default": 0,
"description": "0 asks the server to choose the next safe unpublished round; a positive value makes a client_fixed commitment and must still be safely in the future.",
"minimum": 0,
"type": "integer"
}
},
"required": [
"count",
"sides"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"description": "Dice request bound to a future drand round.",
"properties": {
"algorithm_version": {
"default": "drand-hkdf-sha256-v1",
"description": "Optional version guard; when supplied it must match the server's pinned derivation algorithm.",
"enum": [
"drand-hkdf-sha256-v1"
],
"type": "string"
},
"client_seed": {
"default": "",
"description": "Optional public domain-separation label, not secret entropy.",
"maxLength": 256,
"type": "string"
},
"count": {
"description": "Number of independent dice to roll.",
"maximum": 1000,
"minimum": 1,
"type": "integer"
},
"sides": {
"description": "Number of equally likely faces on each die; returned values range from 1 through sides.",
"maximum": 1000000000,
"minimum": 2,
"type": "integer"
},
"target_round": {
"default": 0,
"description": "0 asks the server to choose the next safe unpublished round; a positive value makes a client_fixed commitment and must still be safely in the future.",
"minimum": 0,
"type": "integer"
}
},
"required": [
"count",
"sides"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"description": "Verifiable Random result and complete drand derivation transcript.",
"properties": {
"algorithm_version": {
"description": "Pinned canonicalization, derivation, and sampling algorithm version required to reproduce the result.",
"enum": [
"drand-hkdf-sha256-v1"
],
"type": "string"
},
"beacon": {
"additionalProperties": false,
"description": "Locally verified drand Quicknet proof used as the public randomness source.",
"properties": {
"chain_hash": {
"description": "Pinned Quicknet chain hash used to fetch and verify the round.",
"enum": [
"52db9ba70e0cc0f6eaf7803dd07447a1f5477735fd3f661792ba94600c84e971"
],
"type": "string"
},
"network": {
"description": "Pinned drand network name.",
"enum": [
"quicknet"
],
"type": "string"
},
"randomness": {
"description": "Lowercase hexadecimal randomness derived from the verified signature.",
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"round": {
"description": "Exact verified Quicknet round used for this result.",
"minimum": 1,
"type": "integer"
},
"scheduled_time": {
"description": "Scheduled UTC publication time of the selected round.",
"format": "date-time",
"type": "string"
},
"scheme": {
"description": "Pinned drand signature scheme.",
"enum": [
"bls-unchained-g1-rfc9380"
],
"type": "string"
},
"signature": {
"description": "Lowercase hexadecimal BLS signature verified against the pinned Quicknet public key.",
"pattern": "^[0-9a-f]{96}$",
"type": "string"
}
},
"required": [
"network",
"chain_hash",
"scheme",
"round",
"scheduled_time",
"randomness",
"signature"
],
"type": "object"
},
"example_only": {
"description": "True only in compiled catalog/keepalive examples; live paid results are false.",
"type": "boolean"
},
"operation": {
"description": "Random operation performed by this route.",
"enum": [
"dice"
],
"type": "string"
},
"processed_at": {
"description": "UTC time when the service accepted the request and committed to the round-selection decision.",
"format": "date-time",
"type": "string"
},
"request_hash": {
"description": "Lowercase SHA-256 of your canonical request JSON — retain the exact request body so you can re-derive the result offline.",
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"result": {
"additionalProperties": false,
"description": "Operation-specific result derived deterministically from the verified beacon and request hash.",
"properties": {
"maximum": {
"description": "Largest returned die value.",
"type": "integer"
},
"minimum": {
"description": "Smallest returned die value.",
"type": "integer"
},
"total": {
"description": "Sum of all returned dice values.",
"type": "integer"
},
"values": {
"description": "Dice values in draw order, each between 1 and sides.",
"items": {
"type": "integer"
},
"type": "array"
}
},
"required": [
"values",
"total",
"minimum",
"maximum"
],
"type": "object"
},
"selection_mode": {
"description": "server_next means the server chose the next safe unpublished round, so you trust its selection chronology; client_fixed means the round is the one you committed to before paying and no other round can be substituted; example_only appears only in catalog examples.",
"enum": [
"server_next",
"client_fixed",
"example_only"
],
"type": "string"
},
"target_round": {
"description": "Echoes the round actually selected for this result; in server_next mode this is the server-chosen round, not the 0 you sent.",
"minimum": 1,
"type": "integer"
}
},
"required": [
"operation",
"algorithm_version",
"selection_mode",
"target_round",
"example_only",
"processed_at",
"request_hash",
"beacon",
"result"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}