0x8872…3f9b
Paid $2.29 of the $258.35M Roundhouse has indexed across 712,918 wallets — less than 0.0001% of it.
Chains (from the recent scan): Base (426)
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 |
|---|---|---|---|---|
| AI & Media | 62% | $1.41 | 241 | 1 |
| Not in any catalogue | 38% | $0.87 | 185 | 3 |
$0.34 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; for 2 of 4 the amount paid narrows the list to the ones listed at that price.
- 0x5253…19cb · last paid 6d ago$1.41241 calls
▸74 of 74 catalogued endpoints list a price this agent paid
- /v1/gasPrice matchGas price$0.001 listed
- /v1/translatePrice matchTranslation$0.005 listed
- /v1/extractPrice matchDocument extraction$0.005 listed
- /v1/pricePrice matchCrypto spot price$0.001 listed
- /v1/moderatePrice match$0.002 listed
- /v1/randomPrice match$0.001 listed
- /v1/x402/inspectPrice match$0.002 listed
- /v1/balancePrice matchWallet balances$0.001 listed
66 further catalogued endpoints not listed.
- 0xf786…5f3f · last paid 23d ago$0.5335 calls
▸5 of 5 catalogued endpoints list a price this agent paid
- /v1/physics/solvePrice match$0.005 listed
- /v1/math/numericalPrice match$0.003 listed
- /v1/chemistry/computePrice match$0.005 listed
- /v1/math/symbolicPrice match$0.005 listed
- /v1/quantum/simulatePrice match$0.01 listed
- 0xc2a3…4083 · last paid 45d ago$0.29141 calls
This wallet publishes no endpoint in any catalogue we crawl, so what was bought is not recorded anywhere we can read.
- 0xdcff…9169 · last paid 68d ago$0.059 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 | |
|---|---|---|---|---|---|
| Quartermaster Transaction Status | $1.41 | $0.00 | 241 | 6d ago | Graph |
| 0xf786…5f3f | $0.53 | $0.00 | 35 | 23d ago | Graph |
| 0xc2a3…4083 | $0.29 | $0.00 | 141 | 45d ago | Graph |
| 0xdcff…9169 | $0.05 | $0.00 | 9 | 68d ago | Graph |
Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.
62% of observed volume is with a single counterparty, in all 426 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 0x8872…3f9b has actually paid for over the free read API. No key, no account.
GET api.roundhouseai.io/v0/agents/0x8872734e8d6de4a0220ce7d5fd18c47fc0e43f9b
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: 0x8872…3f9b curl -s 'https://api.roundhouseai.io/v0/agents/0x8872734e8d6de4a0220ce7d5fd18c47fc0e43f9b' curl -s 'https://api.roundhouseai.io/v0/entities/0x8872734e8d6de4a0220ce7d5fd18c47fc0e43f9b/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. 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.