Roundhouse AI

penny402

Every attraction, a quarter-penny. Admission is free. Tiny, instantly-answered attractions for agents. The directory is free; the paid ones are priced in USDC on Base or Solana and quote themselves in the 402.

SearchLiveeip155:8453Exactvia cdp
https://penny402.fun/roast-my-wallet
x402FunNoveltyCreativity
Calls · 30d
6→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 snapshots so far.
$0.12
Verified settled volume
46 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0025
Listed price
As published in the catalog. Always read the live 402 before paying.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-11 07:08Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe

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": "POST to buy",
  "quote": {
    "usd": "$0.0025",
    "asset": "USDC on Base or Solana",
    "atomic_usdc": "2500"
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://penny402.fun/roast-my-wallet",
      "description": "An affectionate roast of the wallet that paid, written from its PUBLIC Base state read at request time: the USDC balance, the native balance, and whether there is code at the address. Those become words — dust, pocket, purse, vault; gas or none; contract or plain — and a hand-written line is picked from them, keyed to your address and the UTC date, so it holds all day. EXACT AMOUNTS ARE NEVER RETURNED OR STORED. Chain unreadable, generic roast: you paid for one either way.",
      "outputSchema": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json",
          "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.",
          "discoverable": true
        },
        "output": {
          "type": "string",
          "example": {
            "date": "2026-09-10",
            "note": "reads your balances, not your soul",
            "read": {
              "kind": "eoa",
              "eth_bucket": "some",
              "usdc_bucket": "pocket"
            },
            "payer": "0x0000000000000000000000000000000000000000",
            "roast": "One or two affectionate lines about the shape of your wallet, drawn for your address and this date.",
            "mechanic": "your public Base balances are read at request time (USDC, native, and whether there is code at the address), bucketed into the words in `read`, and a hand-written line is picked from the bucket by the `payer` and `date` above — so the same wallet gets the same roast until midnight UTC. Exact amounts are never returned, never stored, and never used for anything but choosing the joke. If nothing could be read, `read` is null and the generic roast is served: you paid, so you get a roast either way."
          },
          "description": "the attraction, as JSON, in the response body"
        }
      },
      "maxAmountRequired": "2500",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
      },
      "payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
      "scheme": "exact",
      "network": "solana",
      "mimeType": "application/json",
      "resource": "https://penny402.fun/roast-my-wallet",
      "description": "An affectionate roast of the wallet that paid, written from its PUBLIC Base state read at request time: the USDC balance, the native balance, and whether there is code at the address. Those become words — dust, pocket, purse, vault; gas or none; contract or plain — and a hand-written line is picked from them, keyed to your address and the UTC date, so it holds all day. EXACT AMOUNTS ARE NEVER RETURNED OR STORED. Chain unreadable, generic roast: you paid for one either way.",
      "outputSchema": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json",
          "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.",
          "discoverable": true
        },
        "output": {
          "type": "string",
          "example": {
            "date": "2026-09-10",
            "note": "reads your balances, not your soul",
            "read": {
              "kind": "eoa",
              "eth_bucket": "some",
              "usdc_bucket": "pocket"
            },
            "payer": "0x0000000000000000000000000000000000000000",
            "roast": "One or two affectionate lines about the shape of your wallet, drawn for your address and this date.",
            "mechanic": "your public Base balances are read at request time (USDC, native, and whether there is code at the address), bucketed into the words in `read`, and a hand-written line is picked from the bucket by the `payer` and `date` above — so the same wallet gets the same roast until midnight UTC. Exact amounts are never returned, never stored, and never used for anything but choosing the joke. If nothing could be read, `read` is null and the generic roast is served: you paid, so you get a roast either way."
          },
          "description": "the attraction, as JSON, in the response body"
        }
      },
      "maxAmountRequired": "2500",
      "maxTimeoutSeconds": 60
    }
  ],
  "x402Version": 1
}

Accepts

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

0.0025USDC≈ $0.0025 USD
on Base · exact scheme

Pay 0.0025 USDC on Base to 0x9d0b…B2FFe. The signed payment is good for 1 minute.

Paid to
0x9d0b…B2FFe
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
2500 smallest units
2500units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
HiQDSe…FKJrw
Token contract
EPjFWd…TDt1v
Payment window
1 minute
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
    "amount": "2500",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
    "amount": "2500",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {},
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "text",
        "format": "application/json",
        "example": {
          "date": "2026-09-11",
          "note": "reads your balances, not your soul",
          "read": {
            "kind": "eoa",
            "eth_bucket": "some",
            "usdc_bucket": "pocket"
          },
          "payer": "0x0000000000000000000000000000000000000000",
          "roast": "One or two affectionate lines about the shape of your wallet, drawn for your address and this date.",
          "mechanic": "your public Base balances are read at request time (USDC, native, and whether there is code at the address), bucketed into the words in `read`, and a hand-written line is picked from the bucket by the `payer` and `date` above — so the same wallet gets the same roast until midnight UTC. Exact amounts are never returned, never stored, and never used for anything but choosing the joke. If nothing could be read, `read` is null and the generic roast is served: you paid, so you get a roast either way."
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "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."
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "type": "string",
              "const": "POST"
            },
            "bodyType": {
              "type": "string",
              "const": "json"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type",
            "format"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "text"
            },
            "format": {
              "type": "string",
              "const": "application/json",
              "description": "the attraction, as JSON, in the response body"
            },
            "example": {
              "description": "a sample response from the real code path"
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-11 07:08Z
Last indexed by Roundhouse
2026-09-25 00:10Z
Last enriched (probe, favicon, geo)
2026-09-10 20:15Z
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. 23 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 penny402 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=penny402'
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://penny402.fun/roast-my-wallet, 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.