fx-snapshot

Returns European Central Bank reference rates through frankfurter.dev: one base currency against the symbols you name, each with the value date the rate belongs to.

Returns European Central Bank reference rates through frankfurter.dev: one base currency against the symbols you name, each with the value date the rate belongs to. Optionally a comparison date is fetched too and the change per currency is computed in percent, so a move is visible without a second call. Cross rates between two non-euro currencies are derived through the base and marked as derived.

UNRATEDDelisted

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?

0x2880edff…771c4e5e

URL

https://finanz.halowerk.com/v1/fx-snapshot

Seen

first 35 days ago · last 23 days ago

35 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.2

UN
RATED

0.300 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 0.700: 0.089 uncertain ? + 0.611 short ? · 0.150 to D

How the composite of 0.300 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	0.31	0.166		0.100	−0.411	−0.089
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		0.300	gap to 1.000 = 0.700 · 0.611 short · 0.089 uncertain	0.300	−0.611	−0.089

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

The multiplication, written out

  0.600 × 0.166   liveness       
+ 0.200 × 0.000   latency p95    
+ 0.200 × 1.000   price stability
= 0.300           → UNRATED: 34 of 30 paid calls      weights 2026.09.2 · 34 samples · seed cap_01M1A5QFD07XWNZKCG0HAHDEDV|2026-08-18T23:00:02.862Z|2026.09.2

Verify it yourselfnpx teppi-check https://finanz.halowerk.com/v1/fx-snapshotcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5QFD07XWNZKCG0HAHDEDV