Roundhouse

Base Onchain Data

Who is this Base 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/base/wallet-profile
BaseOnchainerc20TokenWallet
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 05:49Z
—
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": "0x2211d1D0020DAEA8039E46Cf1367962070d77DA9"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "age": {
            "ageDays": 886.5,
            "firstDirection": "in",
            "firstActivityAt": "2024-05-19T17:46:01.000Z",
            "firstActivityTx": "0x5f454db47b81efe7131819debc259678524c550771a0262b9cb486d58b5ba799",
            "firstActivityBlock": 14675707
          },
          "chain": "base",
          "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": "minimal proxy (often a smart-contract wallet)",
            "isContract": true,
            "nativeBalance": "7.554675633166555733",
            "nativeBalanceUsd": 18129.022
          },
          "address": "0x2211d1D0020DAEA8039E46Cf1367962070d77DA9",
          "activity": {
            "newestAt": "2026-10-23T05:32:03.000Z",
            "byCategory": {
              "erc20": 193,
              "erc721": 7
            },
            "moreHistory": true,
            "inboundScanned": 100,
            "oldestScannedAt": "2026-03-04T20:47:51.000Z",
            "outboundScanned": 100,
            "transfersScanned": 200
          },
          "nativeUsd": {
            "price": 2399.71,
            "source": "Chainlink ETH/USD",
            "symbol": "ETH",
            "updatedAt": "2026-10-23T05:32:25.000Z"
          },
          "firstFunder": {
            "at": "2024-05-19T17:46:01.000Z",
            "tx": "0x5f454db47b81efe7131819debc259678524c550771a0262b9cb486d58b5ba799",
            "asset": "ETH",
            "amount": 1,
            "address": "0x1985EA6E9c68E1C272d8209f3B478AC2Fdb25c87"
          },
          "largeTransfers": [
            {
              "at": "2026-06-11T18:24:41.000Z",
              "usd": 10000,
              "hash": "0x946b81e380e8efa4ba6e90b9eb22b76733b331a1613c5f540ff93d0ef0de8759",
              "asset": "USDC",
              "block": 47206467,
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "amount": 10000,
              "category": "erc20",
              "direction": "out",
              "counterparty": "0xf605767BB0636FE082B20b2999A6957e3c772378"
            },
            {
              "at": "2026-03-15T05:58:07.000Z",
              "usd": 1000,
              "hash": "0x980b5e79d2c9aca49de1b0dbed6303cbc76f1003eb463e04af3086839efb8540",
              "asset": "USDC",
              "block": 43382470,
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "amount": 1000,
              "category": "erc20",
              "direction": "out",
              "counterparty": "0x944766f715b51967E56aFdE5f0Aa76cEaCc9E7f9"
            }
          ],
          "recentTransfers": [
            {
              "at": "2026-10-23T05:32:03.000Z",
              "usd": null,
              "hash": "0xfa9eb05cc39d5837f798e4af956c2d5701e7caedb1ed870b8cc7719a79616adc",
              "asset": "ZORA",
              "block": 52972088,
              "token": "0x1111111111166b7FE7bd91427724B487980aFc69",
              "amount": 1.176424941,
              "category": "erc20",
              "direction": "in",
              "counterparty": "0xC8d077444625eB300A427a6dfB2b1DBf9b159040"
            },
            {
              "at": "2026-10-23T04:54:45.000Z",
              "usd": null,
              "hash": "0x86f49f84cfc339368a9e60506d1c5f53b22b7584dfd1e6e4a2785aa0230c70c0",
              "asset": "ZORA",
              "block": 52970969,
              "token": "0x1111111111166b7FE7bd91427724B487980aFc69",
              "amount": 38.73637901,
              "category": "erc20",
              "direction": "in",
              "counterparty": "0xC8d077444625eB300A427a6dfB2b1DBf9b159040"
            },
            {
              "at": "2026-10-23T04:54:27.000Z",
              "usd": null,
              "hash": "0x5355bc9bbc8e8979da09448fa944eb4b4712a3d6084b3b95f67b1dbc33bc3dd3",
              "asset": "ZORA",
              "block": 52970960,
              "token": "0x1111111111166b7FE7bd91427724B487980aFc69",
              "amount": 24.00175129,
              "category": "erc20",
              "direction": "in",
              "counterparty": "0xC8d077444625eB300A427a6dfB2b1DBf9b159040"
            },
            {
              "at": "2026-10-23T04:50:31.000Z",
              "usd": null,
              "hash": "0xe8bad3a06af40f1a147648bc858fe960d072e442cb149dc6d9dace021915b330",
              "asset": "STONKEX",
              "block": 52970842,
              "token": "0x5ab000ff9B9FfE0349CE5ffA5fD86f217C3680F5",
              "amount": 1.11299432,
              "category": "erc20",
              "direction": "in",
              "counterparty": "0x4Ee35c658b8032a7577096B60bd51Ae9909E4f98"
            },
            {
              "at": "2026-10-23T04:50:31.000Z",
              "usd": null,
              "hash": "0xe8bad3a06af40f1a147648bc858fe960d072e442cb149dc6d9dace021915b330",
              "asset": "SPCX",
              "block": 52970842,
              "token": "0xb2000000000000000000007b9fcbd005511aCBd5",
              "amount": 0.0000248,
              "category": "erc20",
              "direction": "in",
              "counterparty": "0x4Ee35c658b8032a7577096B60bd51Ae9909E4f98"
            }
          ],
          "topCounterparties": [
            {
              "sent": 0,
              "lastAt": "2026-10-23T05:32:03.000Z",
              "address": "0xC8d077444625eB300A427a6dfB2b1DBf9b159040",
              "received": 54,
              "transfers": 54
            },
            {
              "sent": 0,
              "lastAt": "2026-10-23T04:50:31.000Z",
              "address": "0x4Ee35c658b8032a7577096B60bd51Ae9909E4f98",
              "received": 30,
              "transfers": 30
            },
            {
              "sent": 10,
              "lastAt": "2026-07-11T15:40:17.000Z",
              "address": "0x5BADb0143f69015c5c86cbd9373474a9c8Ab713B",
              "received": 0,
              "transfers": 10
            },
            {
              "sent": 9,
              "lastAt": "2026-04-12T03:44:47.000Z",
              "address": "0x8a311D7048c35985aa31C131B9A13e03a5f7422d",
              "received": 0,
              "transfers": 9
            },
            {
              "sent": 5,
              "lastAt": "2026-10-14T10:11:49.000Z",
              "address": "0x940181a94A35A4569E4529A3CDfB74e38FD98631",
              "received": 0,
              "transfers": 5
            }
          ]
        }
      }
    },
    "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 Base"
                }
              },
              "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 05:49Z
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 Base 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=Base%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/base/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.