Index onlineMerchant portal
Api Endpoint

penny402

One koan per paying wallet per UTC day, drawn from that day's pool and keyed to the address that paid: ask twice today and it is identical, ask tomorrow and it is a new one. Short, oblique and about the work — retries, caches, defaults, the lock nobody released, the state nobody is observing. It resolves nothing and advises nothing; that is the form. Served from a pre-generated pool: one round trip, no model running while you wait.

Open interactive test console

Offering

Provider
penny402.fun
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Blockchain And Crypto
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://penny402.fun/koan
MIME type
application/json
First seen
2026-10-16T01:50:10.647Z
Last seen
Tags
X402, fun, novelty, creativity

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.0025 USDC
Atomic price: 2500 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.0025 USDC
Atomic price: 2500 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2500",
    "payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "2500",
    "payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw"
  }
]

Observed health

Status
Healthy
Latest latency
38 ms
Average latency
137 ms
HTTP status
204
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "const": "POST"
    },
    "bodyType": {
      "type": "string",
      "const": "json"
    },
    "body": {
      "type": "object",
      "description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms.",
          "type": "object"
        },
        "bodyType": {
          "const": "json",
          "type": "string"
        },
        "method": {
          "const": "POST",
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "additionalProperties": false,
      "properties": {
        "example": {
          "description": "a sample response from the real code path"
        },
        "format": {
          "const": "application/json",
          "description": "the attraction, as JSON, in the response body",
          "type": "string"
        },
        "type": {
          "const": "text",
          "type": "string"
        }
      },
      "required": [
        "type",
        "format"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}