market.price?symbol=ETH

Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET.

Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.003 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x3574999d…83e14f5b

URL

https://coord.taifoon.dev/v1/x402/class/market.price?symbol=ETH

Seen

first 10 days ago · last 14 hr ago

10 free handshakes

Payment

Pays through

x402

Offered on?

eip155:143, Arbitrum, Robinhood Chain, Arc, Base USDC, Solana

Listed on?

Arbitrum, Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.391 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 0.609: 0.409 uncertain ? + 0.200 short ? · 0.059 to D

How the composite of 0.391 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	0.318		0.191	0	−0.409
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		0.391	gap to 1.000 = 0.609 · 0.200 short · 0.409 uncertain	0.391	−0.200	−0.409

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

The multiplication, written out

  0.600 × 0.318   liveness       
+ 0.200 × 0.000   latency p95    
+ 0.200 × 1.000   price stability
= 0.391           → UNRATED: 9 of 30 paid calls      weights 2026.09.6 · 9 samples · seed cap_01M4SWSM56X9X38XEAMS4F8HQ2|2026-09-21T22:38:14.967Z|2026.09.6

Verify it yourselfnpx teppi-check https://coord.taifoon.dev/v1/x402/class/market.price?symbol=ETHcurl -s https://api.teppi.xyz/v1/trust/cap_01M4SWSM56X9X38XEAMS4F8HQ2