x402 merchant
Blackwood State Wallet Balances$0.004 / callx402-gateway.blackwoodstate8.workers.dev ↗
Wallet balanceerc20OnchainData

Use when you need the ERC20 token balance or wallet balance of an address on Base for onchain data checks. Do not use for ethereum mainnet or other chains, NFTs, transaction history or USD values. Returns JSON with the ETH and ERC20 token balances of a wallet on Base, read on-chain in one block: 21 major tokens plus any you list for 0.004 USDC per call. Typical response time 1200 ms (p95). Category: Data.

MerchantReport

0xbb2f…dd90

0xbb2f227a85e9f7405614326ced123230d708dd90Explorer
$0.02
Received
$0.00
Paid out
6
Settlements
3
Distinct counterparties
In the 6 settlements scanned

Received $0.02 of the $833.89M Roundhouse has indexed across 1,300,243 wallets — less than 0.0001% of it.

Counted from this wallet’s own settlements. The index rollup has no row for it yet, which is normal for an address first seen in the last half hour.

Chains (from the recent scan): Base (6)

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x87db…f8cf$0.00$0.02418h agoGraph
0xa1d1…1978$0.00$0.00419h agoGraph
0xec2a…d034$0.00$0.004114h agoGraph

Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.

Data quality

67% of observed volume is with a single counterparty, in all 6 observed settlements.

Recent activity

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xbb2f…dd90's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xbb2f227a85e9f7405614326ced123230d708dd90

Open skill.md
Show the prompt
Using Roundhouse, tell me whether this x402 merchant is worth paying: how many distinct
agents have paid it, how recently, and for what.

  Merchant wallet: 0xbb2f227a85e9f7405614326ced123230d708dd90

curl -s 'https://api.roundhouseai.io/v0/merchants/0xbb2f227a85e9f7405614326ced123230d708dd90'
curl -s 'https://api.roundhouseai.io/v0/entities/0xbb2f227a85e9f7405614326ced123230d708dd90/settlements?limit=50'

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.