Endpoint · market dataGETx402-seller-0ay3.onrender.com /api/fx/rates ?base=EUR
Foreign exchange / currency conversion reference rates (European Central Bank) for a base currency, source Frankfurter.
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Foreign exchange / currency conversion reference rates (European Central Bank) for a base currency, source Frankfurter. Parameter: ?base=<ISO 4217 code> (default EUR, e.g. USD, GBP, JPY).Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.005 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://x402-seller-0ay3.onrender.com/api/fx/rates?base=EUR
Seen
first 29 days ago · last 2 days ago
54 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.929 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.071: 0.071 uncertain ? + 0.000 short ?
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.882 | 0.529 | 0 | −0.071 | |
| latency p95 it answered as fast as its class |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.929 | gap to 1.000 = 0.071 · 0.000 short · 0.071 uncertain | 0.929 | −0.000 | −0.071 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.882 liveness
+ 0.200 × 1.000 latency p95
+ 0.200 × 1.000 price stability
= 0.929 → UNRATED: 52 of 30 paid calls weights 2026.09.6 · 52 samples · seed cap_01M1RD9JBD2SKFTM5C1PZ2JVPV|2026-09-03T06:00:39.150Z|2026.09.6
Verify it yourself
npx teppi-check https://x402-seller-0ay3.onrender.com/api/fx/rates?base=EURcurl -s https://api.teppi.xyz/v1/trust/cap_01M1RD9JBD2SKFTM5C1PZ2JVPV