Roundhouse

OP Mainnet Onchain Data

Who is this OP Mainnet address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (ETH, WETH, USDC, USDT), from Alchemy's transfer index.

TradingLiveeip155:8453Exactvia cdp
https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/wallet-profile
OptimismOnchainerc20TokenWallet
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$2.05
Verified settled volume
276 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-24 05:54Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2ECB9E1fcca7A62758c679F11bC3241466d181d8

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.

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 0x2ECB…181d8. The signed payment is good for 5 minutes.

Paid to
0x2ECB…181d8
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "age": {
            "ageDays": 1770.6,
            "firstDirection": "in",
            "firstActivityAt": "2021-12-17T15:15:45.000Z",
            "firstActivityTx": "0x7bd800525c7c2a5a773df59d91a4ba4a118bb6311d27974fc27afd08427ced6a",
            "firstActivityBlock": 1281927
          },
          "chain": "optimism",
          "notes": "From Alchemy's transfer index: ETH (top-level only), ERC-20, ERC-721 and ERC-1155 transfers, zero-value ones excluded. Activity, counterparties and large transfers cover the newest 100 transfers in ea… (240 chars, truncated in this example)",
          "account": {
            "kind": "wallet (EOA) with EIP-7702 delegation",
            "nonce": 40,
            "isContract": false,
            "delegatesTo": "0x5A7FC11397E9a8AD41BF10bf13F22B0a63f96f6d",
            "nativeBalance": "0.181079591875347535",
            "nativeBalanceUsd": 435.03887
          },
          "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
          "activity": {
            "newestAt": "2026-10-20T14:01:29.000Z",
            "byCategory": {
              "erc20": 105,
              "erc1155": 92,
              "external": 3
            },
            "moreHistory": true,
            "inboundScanned": 100,
            "oldestScannedAt": "2026-09-03T06:49:41.000Z",
            "outboundScanned": 100,
            "transfersScanned": 200
          },
          "nativeUsd": {
            "price": 2402.47,
            "source": "Chainlink ETH/USD",
            "symbol": "ETH",
            "updatedAt": "2026-10-23T05:43:01.000Z"
          },
          "firstFunder": null,
          "largeTransfers": [],
          "recentTransfers": [
            {
              "at": "2026-10-20T14:01:29.000Z",
              "usd": null,
              "hash": "0xed2ba2cfc66c88764d316fe06c53254caa1f788169bc88f5ee8183294a6bfeaa",
              "asset": null,
              "block": 158453056,
              "token": "0x1bf7677c076899E2032304b0EfFaBe37A0eD6fF6",
              "amount": null,
              "category": "erc1155",
              "direction": "in",
              "counterparty": "0x0000000000000000000000000000000000000000"
            },
            {
              "at": "2026-10-20T13:50:19.000Z",
              "usd": null,
              "hash": "0xabe9c366fcc9d172bad34d3e65e28335ea91ed74c18217ca827ece657c401cef",
              "asset": null,
              "block": 158452721,
              "token": "0x1882cdc584e21e51886D0DDa5b9fa7f5aaf6EE30",
              "amount": null,
              "category": "erc1155",
              "direction": "in",
              "counterparty": "0x0000000000000000000000000000000000000000"
            },
            {
              "at": "2026-10-20T07:38:01.000Z",
              "usd": null,
              "hash": "0xc95b4e21725bf81f652cfb15f3f0cd5b58aebff3bdce51d38ebd7aa289056d82",
              "asset": null,
              "block": 158441552,
              "token": "0x034179efbDfC587B0444dc4eb3FCe5A6a24bBe19",
              "amount": null,
              "category": "erc1155",
              "direction": "in",
              "counterparty": "0x0000000000000000000000000000000000000000"
            },
            {
              "at": "2026-10-20T05:05:19.000Z",
              "usd": null,
              "hash": "0xbc53b2023f4e55355d379ae0793cf34a87be9d4ae6410bbb1d65541a4b7e7e8c",
              "asset": null,
              "block": 158436971,
              "token": "0x034179efbDfC587B0444dc4eb3FCe5A6a24bBe19",
              "amount": null,
              "category": "erc1155",
              "direction": "in",
              "counterparty": "0x0000000000000000000000000000000000000000"
            },
            {
              "at": "2026-10-20T05:02:41.000Z",
              "usd": null,
              "hash": "0x96e6b4415210b1360cbc74668e985f322b29fc2e357a7783c4bd2a8ecc7e87eb",
              "asset": null,
              "block": 158436892,
              "token": "0x03d2F73a818e5d90439b524d6C70DC047EE0e60d",
              "amount": null,
              "category": "erc1155",
              "direction": "in",
              "counterparty": "0x0000000000000000000000000000000000000000"
            }
          ],
          "topCounterparties": [
            {
              "sent": 0,
              "lastAt": "2026-10-19T08:01:27.000Z",
              "address": "0x9F10A3c15395e2F0E5a73F0aBA695E907a50e24F",
              "received": 1,
              "transfers": 1
            },
            {
              "sent": 0,
              "lastAt": "2026-10-19T07:46:29.000Z",
              "address": "0x9F10063326B86cAE32A3fF2d3072537576c0E24f",
              "received": 1,
              "transfers": 1
            },
            {
              "sent": 0,
              "lastAt": "2026-10-18T00:59:49.000Z",
              "address": "0x502b5E31ee7d579F4d2F7007dC392860CC7a04d2",
              "received": 1,
              "transfers": 1
            },
            {
              "sent": 0,
              "lastAt": "2026-10-18T00:52:45.000Z",
              "address": "0x502b78b4aBcC1a530d29C6524E5c691164aA04d2",
              "received": 1,
              "transfers": 1
            },
            {
              "sent": 0,
              "lastAt": "2026-10-09T10:33:39.000Z",
              "address": "0x0b9906aB0ca2b0A1D8D46a2A15D1cfa5dC55B689",
              "received": 1,
              "transfers": 1
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "address"
              ],
              "properties": {
                "address": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{40}$",
                  "description": "Wallet or contract address on OP Mainnet"
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-24 05:54Z
Last indexed by Roundhouse
2026-10-26 17:20Z
Last enriched (probe, favicon, geo)
2026-10-24 07:15Z
x402 version
2
Max timeout
300s
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. 3 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 OP Mainnet Onchain Data 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=OP%20Mainnet%20Onchain%20Data'
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://ca-tax-api-mainnet.lxtap.workers.dev/optimism/wallet-profile, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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