Endpoint · evidencePOSTx402.agentutility.ai/exchange-rates

Exchange rates.

Exchange rates. Latest or historical FX rates between currencies, sourced from the European Central Bank (Frankfurter API). 30+ currency pairs. Optional amount conversion. No commercial restrictions. Specify a base currency (default USD), an optional quote currency or list, an optional date (YYYY-MM-DD or 'latest'), and an optional amount to also receive a converted value when a single quote is supplied.

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?

0x6c0752c0…9ebb5621

URL

https://x402.agentutility.ai/exchange-rates

Seen

first 35 days ago · last 18 hr ago

35 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.530 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 0.470: 0.137 uncertain ? + 0.334 short ? · 0.120 to C

How the composite of 0.530 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	0.78	0.549		0.330	−0.134	−0.137
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		0.530	gap to 1.000 = 0.470 · 0.334 short · 0.137 uncertain	0.530	−0.334	−0.137

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

The multiplication, written out

  0.600 × 0.549   liveness       
+ 0.200 × 0.000   latency p95    
+ 0.200 × 1.000   price stability
= 0.530           → UNRATED: 26 of 30 paid calls      weights 2026.09.6 · 26 samples · seed cap_01M1A5A0RTSS5SA93ABSZ3TQ0C|2026-09-04T15:34:08.493Z|2026.09.6

Verify it yourselfnpx teppi-check https://x402.agentutility.ai/exchange-ratescurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A0RTSS5SA93ABSZ3TQ0C