Roundhouse

entropy.rip

Fetches verifiable entropy data for provable randomness use cases.

DataLiveeip155:8453Exactvia facilitator:dexter
https://entropy.rip/api/entropy/verifiable
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far.
$6.26
Verified settled volume
160 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x4293f75E69b22Ee68AfA0F464dE86E5CD80BED75

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4293f75E69b22Ee68AfA0F464dE86E5CD80BED75",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://entropy.rip/api/entropy/verifiable",
    "tags": [
      "entropy",
      "verifiable",
      "drand",
      "pgp",
      "auditable"
    ],
    "iconUrl": "https://entropy.rip/hourglass.svg",
    "mimeType": "application/json",
    "description": "Generate cryptographically secure verifiable randomness using Drand and local system entropy",
    "serviceName": "ENTROPY.RIP"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "signature": "-----BEGIN PGP SIGNATURE...",
            "timestamp": "2026-07-14T09:20:00Z",
            "local_salt": "deadbeef...",
            "randomness": "a1b2c3d4e5f6g7h8...",
            "drand_round": 4015682,
            "random_value": 1234567890123456,
            "drand_randomness": "6b37a5..."
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http",
                "description": "type"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string",
                "description": "method"
              },
              "queryParams": {
                "type": "object",
                "properties": {},
                "description": "queryParams"
              }
            },
            "description": "input",
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string",
                "description": "type"
              },
              "example": {
                "type": "object",
                "description": "example"
              }
            },
            "description": "output"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x4293…BED75. The signed payment is good for 1 minute.

Paid to
0x4293…BED75
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x4293f75E69b22Ee68AfA0F464dE86E5CD80BED75",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "resource": "https://entropy.rip/api/entropy/verifiable",
    "maxTimeoutSeconds": 60
  }
]

Provenance

Seen in the source catalog
2026-09-23 19:43Z
Last indexed by Roundhouse
2026-09-24 07:15Z
Last enriched (probe, favicon, geo)
2026-09-16 16:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service entropy.rip and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=entropy.rip'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://entropy.rip/api/entropy/verifiable, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.