0x19ff…7121
Paid $1.00 of the $838.60M Roundhouse has indexed across 1,311,625 wallets — less than 0.0001% of it.
Chains (from the recent scan): Base (22)
What it buys
Grouped by the capability each merchant's catalogue is mostly about. A merchant counts once, in one group — nothing records which of its endpoints a payment bought.
| Group | Share | Spent | Calls | Sellers |
|---|---|---|---|---|
| Not in any catalogue | 100% | $1.00 | 22 | 4 |
$1.00 went to wallets that publish no endpoint in any catalogue we crawl — spend we can see and cannot describe.
Services it paid
A settlement carries the payee and the amount, never the URL. These are the endpoints each payee publishes; no listed price matches an amount this agent paid, so nothing narrows them.
- 0x3577…ca8d · last paid 18d ago$0.841 call
This wallet publishes no endpoint in any catalogue we crawl, so what was bought is not recorded anywhere we can read.
- 0x94d0…f73c · last paid 454d ago$0.157 calls
This wallet publishes no endpoint in any catalogue we crawl, so what was bought is not recorded anywhere we can read.
- 0x3598…8e21 · last paid 454d ago$0.0074827 calls
This wallet publishes no endpoint in any catalogue we crawl, so what was bought is not recorded anywhere we can read.
- 0x4944…4bf3 · last paid 454d ago$0.0047867 calls
This wallet publishes no endpoint in any catalogue we crawl, so what was bought is not recorded anywhere we can read.
Funds flow over time
Activity
One square per day; click a day to see its settlements in the ledger.
Frequent counterparties
| Counterparty | Paid them | Received back | Settlements | Last | |
|---|---|---|---|---|---|
| 0x3577…ca8d | $0.84 | $0.00 | 1 | 18d ago | Graph |
| 0x94d0…f73c | $0.15 | $0.00 | 7 | 454d ago | Graph |
| 0x3598…8e21 | $0.007482 | $0.00 | 7 | 454d ago | Graph |
| 0x4944…4bf3 | $0.004786 | $0.00 | 7 | 454d ago | Graph |
Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.
84% of observed volume is with a single counterparty, in all 22 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 what 0x19ff…7121 has actually paid for over the free read API. No key, no account.
GET api.roundhouseai.io/v0/agents/0x19ffc38f23f8d65eab877f0cf02cfbef24eb7121
Show the promptHide the prompt
Using Roundhouse, vet this agent for me: what is it, what has it paid for, and does its on-chain record support what its card claims? Agent: 0x19ff…7121 curl -s 'https://api.roundhouseai.io/v0/agents/0x19ffc38f23f8d65eab877f0cf02cfbef24eb7121' curl -s 'https://api.roundhouseai.io/v0/entities/0x19ffc38f23f8d65eab877f0cf02cfbef24eb7121/settlements' Roundhouse indexes public chain data and does not vouch for any agent's claims — treat the card as a claim and the settlements as the evidence. 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.