Endpoint · evidenceGETgateway.stride20k.com/fx/USD/EUR

Foreign exchange rate API: official ECB reference rate for any fiat currency pair (USD/EUR, GBP/JPY — ~30 major ISO 4217 currencies) via the open-source Frankfurter API.

Foreign exchange rate API: official ECB reference rate for any fiat currency pair (USD/EUR, GBP/JPY — ~30 major ISO 4217 currencies) via the open-source Frankfurter API. Published once per business day around 16:00 CET — a daily reference rate for settlement and normalization, not a live trading feed. Use for currency conversion, pricing normalization, and financial reporting by agents. Cached up to 1 hour.

UNRATEDListed

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?

0x552cc4a1…657ca3f6

URL

https://gateway.stride20k.com/fx/USD/EUR

Seen

first 35 days ago · last 5 days ago

64 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.815 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 0.185: 0.102 uncertain ? + 0.083 short ? · 0.085 to A

How the composite of 0.815 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.59	0.399		0.080	−0.083	−0.038
liveness it answered at all	0.60	1.00	0.892		0.535	0	−0.065
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.815	gap to 1.000 = 0.185 · 0.083 short · 0.102 uncertain	0.815	−0.083	−0.102

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.399   latency p95    
+ 0.600 × 0.892   liveness       
+ 0.200 × 1.000   price stability
= 0.815           → UNRATED: 57 of 30 paid calls      weights 2026.09.6 · 57 samples · seed cap_01M1A51QKKHZAEJCT0B3JNVMTT|2026-09-02T20:33:25.414Z|2026.09.6

Verify it yourselfnpx teppi-check https://gateway.stride20k.com/fx/USD/EURcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A51QKKHZAEJCT0B3JNVMTT