x402 merchant
Historical FX Rates | Blackwood$0.005 / callx402-gateway.blackwoodstate8.workers.dev ↗
Historical exchange ratesHistorical fx rateForex historyEcbData

Use when you need historical exchange rates, a historical FX rate series, forex history or a currency trend. Do not use for rates older than 90 days, live quotes or crypto (one ECB rate per business day). Returns JSON with historical exchange rates: 90 days of daily ECB euro reference rates (free at ecb.europa.eu) for up to 10 currencies, rebased to any base as cross rates, with min, max and percent change for 0.005 USDC per call. Typical response time 1500 ms (p95). Category: Data.

MerchantReport

0xdf51…bf47

0xdf5178c9c686ed466988c44063b3cea200f6bf47Explorer
Received
$0.05↓ 20%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
9↓ 20%
Last 7d vs prior 7d
5
Distinct counterparties
Over the whole indexed history

Received $0.05 of the $846.98M Roundhouse has indexed across 1,330,524 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (9)

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
0x87db…f8cf$0.00$0.0248h agoGraph
0xfb4d…1753$0.00$0.0125d agoGraph
0xc9c7…1670$0.00$0.00512d agoGraph
0xa1d1…1978$0.00$0.00517d agoGraph
0xec2a…d034$0.00$0.00518d agoGraph

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

Data quality

No concentration or self-dealing patterns detected in all 9 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 0xdf51…bf47's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xdf5178c9c686ed466988c44063b3cea200f6bf47

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: 0xdf5178c9c686ed466988c44063b3cea200f6bf47

curl -s 'https://api.roundhouseai.io/v0/merchants/0xdf5178c9c686ed466988c44063b3cea200f6bf47'
curl -s 'https://api.roundhouseai.io/v0/entities/0xdf5178c9c686ed466988c44063b3cea200f6bf47/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.