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
$0.03
Received
$0.00
Paid out
5
Settlements
3
Distinct counterparties
In the 5 settlements scanned

Received $0.03 of the $833.89M Roundhouse has indexed across 1,300,243 wallets — less than 0.0001% of it.

Counted from this wallet’s own settlements. The index rollup has no row for it yet, which is normal for an address first seen in the last half hour.

Chains (from the recent scan): Base (5)

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x87db…f8cf$0.00$0.02318h agoGraph
0xa1d1…1978$0.00$0.00516h agoGraph
0xec2a…d034$0.00$0.005114h agoGraph

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

Data quality

60% of observed volume is with a single counterparty, in all 5 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.