Endpoint · extractionGET4yearcycle.com /x402/fx-rates ?base=USD&symbols=EUR%2CGBP%2CJPY%2CCHF
Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any…
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Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested symbol list; returns the reference date, the rate table and the ECB source attribution.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://4yearcycle.com/x402/fx-rates?base=USD&symbols=EUR%2CGBP%2CJPY%2CCHF
Seen
first 21 days ago · last 10 hr ago
38 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.700 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.300: 0.100 uncertain ? + 0.200 short ? · 0.100 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.834 | 0.500 | 0 | −0.100 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.700 | gap to 1.000 = 0.300 · 0.200 short · 0.100 uncertain | 0.700 | −0.200 | −0.100 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.834 liveness
+ 0.200 × 1.000 price stability
= 0.700 → UNRATED: 37 of 30 paid calls weights 2026.09.6 · 37 samples · seed cap_01M2CMND2A2TRC2VSG8HP8QZGS|2026-09-03T06:00:39.150Z|2026.09.6
Verify it yourself
npx teppi-check https://4yearcycle.com/x402/fx-rates?base=USD&symbols=EUR%2CGBP%2CJPY%2CCHFcurl -s https://api.teppi.xyz/v1/trust/cap_01M2CMND2A2TRC2VSG8HP8QZGS