string?date=string

Mid-market reference rate for a base/quote currency pair, from the European Central Bank.

UNRATEDListedProse in the URL

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.007 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x9a4fb846…849e6bb0

URL

https://api.certaindata.ai/ca054d66abad4d6ea80ba43013b61743-cd/fx-rate/fx/string/string?date=string

Seen

first 35 days ago · last 9 days ago

52 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.304 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 0.696: 0.000 uncertain ? + 0.696 short ? · 0.146 to D

How the composite of 0.304 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	0.17	0.174		0.104	−0.496	0
latency p95 it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.304	gap to 1.000 = 0.696 · 0.696 short · 0.000 uncertain	0.304	−0.696	−0.000

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

The multiplication, written out

  0.600 × 0.174   liveness       
+ 0.200 × 0.000   latency p95    
+ 0.200 × 1.000   price stability
= 0.304           → UNRATED: 46 of 30 paid calls      weights 2026.09.6 · 46 samples · seed cap_01M1A51TYT6D323JMJNZDGZBGZ|2026-09-03T05:28:40.764Z|2026.09.6

Verify it yourselfnpx teppi-check https://api.certaindata.ai/ca054d66abad4d6ea80ba43013b61743-cd/fx-rate/fx/string/string?date=stringcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A51TYT6D323JMJNZDGZBGZ