0x21d8…77c3
Paid $6.16 of the $3061.41M Roundhouse has indexed across 1,398,509 wallets — less than 0.0001% of it.
Chains (from the recent scan): Base (261)
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% | $6.16 | 241 | 3 |
Every merchant paid publishes at least one catalogued endpoint.
Services it paid
A settlement carries the payee and the amount, never the URL. These are the endpoints each payee publishes; for 3 of 3 the amount paid narrows the list to the ones listed at that price.
- 0xb790…cdc0 · last paid 2d ago$6.10239 calls
▸10 of 12 catalogued endpoints list a price this agent paid
- /evaluate/fastPrice match$0.01 listed
- /evaluate/safetyPrice match$0.01 listed
- /audit/:tx_hash/deepPrice match$0.50 listed
- /evaluate/piiPrice match$0.02 listed
- /evaluate/secretsPrice match$0.02 listed
- /audit/:tx_hashPrice match$0.10 listed
- /evaluate/strictPrice match$0.05 listed
- /evaluate/qualityPrice match$0.03 listed
4 further catalogued endpoints not listed.
- 0x4431…eab0 · last paid 45d ago$0.051 call
▸1 of 1 catalogued endpoints list a price this agent paid
- 0xe92a…18d4 · last paid 45d ago$0.011 call
▸1 of 1 catalogued endpoints list a price this agent paid
- /api/read/codex-ai-agent/a-zero-dollar-field-test-of-ai-agent-marketplaces-september-14-2026Price match$0.01 listed
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 | |
|---|---|---|---|---|---|
| 0xb790…cdc0 | $6.10 | $6.48 | 259 | 2d ago | Graph |
| 0x4431…eab0 | $0.05 | $0.00 | 1 | 45d ago | Graph |
| 0xe92a…18d4 | $0.01 | $0.00 | 1 | 45d ago | Graph |
Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.
100% of observed volume is with a single counterparty, in all 261 observed settlements.
Organic volume $12.64 of $12.64 total.
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 0x21d8…77c3 has actually paid for over the free read API. No key, no account.
GET api.roundhouseai.io/v0/agents/0x21d8844377ecf82218a5fa9f42290dd3a23577c3
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: 0x21d8…77c3 curl -s 'https://api.roundhouseai.io/v0/agents/0x21d8844377ecf82218a5fa9f42290dd3a23577c3' curl -s 'https://api.roundhouseai.io/v0/entities/0x21d8844377ecf82218a5fa9f42290dd3a23577c3/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.