x402 merchant
JsonCanonicalizationRfc8785HashSha256

JSON canonicalization — canonicalize structured data with RFC 8785 JCS; return canonical JSON text, UTF-8 byte length, and SHA-256 hash for integrity checks, signature preparation, and deduplication. Includes an EIP-712 signed attestation. Use when an agent needs an idempotency key, cache key, dedup hash, or verifiable commitment. $0.002 per call. Free verification at POST /v1/verify.

MerchantReport

0xfbf6…9681

0xfbf6eb2d6ef4d4a2f528adef116d641ca5e89681Explorer
Received
$0.03↓ 100%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
8↓ 100%
Last 7d vs prior 7d
2
Distinct counterparties
Over the whole indexed history

Received $0.03 of the $846.93M Roundhouse has indexed across 1,330,416 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (8)

Funds flow over time

Activity

MayJunJulAugSepOct
LessMore

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

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x171d…0fca$0.00$0.0268d agoGraph
0xa1d1…1978$0.00$0.00428d agoGraph

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

Data quality

85% of observed volume is with a single counterparty, in all 8 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 0xfbf6…9681's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xfbf6eb2d6ef4d4a2f528adef116d641ca5e89681

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: 0xfbf6eb2d6ef4d4a2f528adef116d641ca5e89681

curl -s 'https://api.roundhouseai.io/v0/merchants/0xfbf6eb2d6ef4d4a2f528adef116d641ca5e89681'
curl -s 'https://api.roundhouseai.io/v0/entities/0xfbf6eb2d6ef4d4a2f528adef116d641ca5e89681/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.