Endpoint · evidenceGETwallet-services-poc-clean-mainnet.3hz-services.workers.dev/fx-rate?base=EUR&quote=USD

Daily reference foreign-exchange rate for any supported fiat currency pair using Frankfurter/ECB reference data.

Daily reference foreign-exchange rate for any supported fiat currency pair using Frankfurter/ECB reference data. Query base and quote ISO 4217 codes. For conversion, normalization, accounting and reporting; not live trading data.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.001 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0xeb0f642c…532b0f5e

URL

https://wallet-services-poc-clean-mainnet.3hz-services.workers.dev/fx-rate?base=EUR&quote=USD

Seen

first 17 days ago · last 14 hr ago

31 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.794 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 0.206: 0.142 uncertain ? + 0.064 short ? · 0.006 to B

How the composite of 0.794 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	1.00	0.764		0.458	0	−0.142
latency p95 it answered as fast as its class	0.20	0.68	0.678		0.136	−0.064	0
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.794	gap to 1.000 = 0.206 · 0.064 short · 0.142 uncertain	0.794	−0.064	−0.142

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

The multiplication, written out

  0.600 × 0.764   liveness       
+ 0.200 × 0.678   latency p95    
+ 0.200 × 1.000   price stability
= 0.794           → UNRATED: 26 of 30 paid calls      weights 2026.09.6 · 26 samples · seed cap_01M2PY8YKGSNQ07EG6B76ZG1JE|2026-08-31T21:25:56.110Z|2026.09.6

Verify it yourselfnpx teppi-check https://wallet-services-poc-clean-mainnet.3hz-services.workers.dev/fx-rate?base=EUR&quote=USDcurl -s https://api.teppi.xyz/v1/trust/cap_01M2PY8YKGSNQ07EG6B76ZG1JE