Endpoint · market dataGETapi-staging.eckari.com /v1/fx/reference-rate ?base=EUR"e=USD
European Central Bank euro foreign exchange reference rate for a pair - the latest published fix or any date in the last 90 days.
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European Central Bank euro foreign exchange reference rate for a pair - the latest published fix or any date in the last 90 days. The ECB publishes EUR/XXX only, so inverse and cross rates are computed by Eckari from the same fix and named in rate_derivation. Reference rates, one per TARGET working day around 16:00 CET, not tradable market rates. Source and reuse conditions travel in meta.attribution. Use when: What is the ECB reference rate for EUR to USD?Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.002 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://api-staging.eckari.com/v1/fx/reference-rate?base=EUR"e=USD
Seen
first 35 days ago · last 17 days ago
49 free handshakes
Payment
Pays through
x402
Offered on?
Base Sepolia USDC
Listed on?
Base Sepolia
Score, from free handshakes onlyweights 2026.09.4
UN
RATED
RATED
0.723 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.277: 0.077 uncertain ? + 0.200 short ? · 0.077 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 | 0.872 | 0.523 | 0 | −0.077 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.723 | gap to 1.000 = 0.277 · 0.200 short · 0.077 uncertain | 0.723 | −0.200 | −0.077 |
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 × 0.872 liveness
+ 0.200 × 1.000 price stability
= 0.723 → UNRATED: 48 of 30 paid calls weights 2026.09.4 · 48 samples · seed cap_01M1A59SCTQ5HB573XZS4X1JNE|2026-08-25T15:18:23.525Z|2026.09.4
Verify it yourself
npx teppi-check https://api-staging.eckari.com/v1/fx/reference-rate?base=EUR"e=USDcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59SCTQ5HB573XZS4X1JNE