x402 merchant
Ozmium Agent API$0.001 / callozmium.org
DefiTradingCryptoCryptocurrencyPortfolio

Coinbase's tokenized U.S. stocks on Base (B20): each token's contract, underlying ticker, live Chainlink 24/5 price (USD) with updatedAt, and minted supply (0 = no secondary liquidity yet; the quote decides). GET /v1/stocks. Secondary trading is permissionless on-chain; Regulation S, not for U.S. persons or other restricted jurisdictions.

MerchantReport

0x53a0…f4db

0x53a05c0eed6cbf065f31aedbae7b0d8ce1a0f4dbExplorer
Received
$118.67↓ 13%
Last 7d vs prior 7d
Paid out
$2.00
Last 7d vs prior 7d
Settlements
2929↑ 89%
Last 7d vs prior 7d
56
Distinct counterparties
Over the whole indexed history

Received $118.67 of the $258.35M Roundhouse has indexed across 712,918 walletsless than 0.0001% of it.

Chains (from the recent scan): Base (1002)

Funds flow over time

Activity

MarAprMayJunJulAugSep
LessMore

One square per day; click a day to see its settlements in the ledger.

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x0e3d…7757$2.00$0.00258d agoGraph
0x4b83…f4dc$0.00$1.5021650d agoGraph
0x5dd0…919e$0.00$0.616132d agoGraph
0xc59e…98dc$0.00$0.10923d agoGraph
0x2a07…7bae$0.00$0.071529d agoGraph
0x27ab…248c$0.00$0.052314d agoGraph
0xc9c7…1670$0.00$0.0453h agoGraph
0xbb5d…71a9$0.00$0.041012d agoGraph

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

Data quality

Not enough of this address's history was examined to assess it: self_dealing and counterparty_concentration and single_counterparty were computed over the 1002 most recent settlements scanned (its history is longer than the 2000-row scan cap), so nothing found there rules anything out. This is an incomplete check, not a clean record.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0xc9c7…16700x53a0…f4dbBase$0.01100%coinbase3h ago0x69c538…115656
0x79f8…f7580x53a0…f4dbBase$0.01100%coinbase6h ago0x0a9847…5a660d
0x7ef1…4ae20x53a0…f4dbBase$0.001100%coinbase8h ago0xc6f689…fa3bad
0x79f8…f7580x53a0…f4dbBase$0.001100%coinbase1d ago0xf6a084…88014b
0xd9ec…145e0x53a0…f4dbBase$0.001100%coinbase1d ago0x22bf9a…84fa36
0x7ef1…4ae20x53a0…f4dbBase$0.001100%coinbase2d ago0x4f46a8…b455be
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x8f1d20…fbe356
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x778827…1a9be4
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x4dcd95…391bab
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0xb8631a…7eaeb6
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0xe61b87…4bfed1
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x59ed40…0b9f01
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0xe2b44d…2513d6
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0xe8b8bd…23db17
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x5bb1ca…2de0a9
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x932bf4…02a00b
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0xa94e2c…f359a9
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x2bc2ba…4e7a3c
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x3d8cdb…180466
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x60de6c…86b937
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x9bb404…204d21
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase2d ago0x54e599…80369a
0x79f8…f7580x53a0…f4dbBase$0.001100%coinbase3d ago0x4c1149…0aa2f4
0x7ef1…4ae20x53a0…f4dbBase$0.001100%coinbase3d ago0x838d40…5b2f32
0x5dd0…919e0x53a0…f4dbBase$0.001100%coinbase3d ago0x4a69cf…00be2c

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x53a0…f4db's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x53a05c0eed6cbf065f31aedbae7b0d8ce1a0f4db

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: 0x53a05c0eed6cbf065f31aedbae7b0d8ce1a0f4db

curl -s 'https://api.roundhouseai.io/v0/merchants/0x53a05c0eed6cbf065f31aedbae7b0d8ce1a0f4db'
curl -s 'https://api.roundhouseai.io/v0/entities/0x53a05c0eed6cbf065f31aedbae7b0d8ce1a0f4db/settlements?limit=50'

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.