Endpoint · otherPOSTkette.halowerk.com/gas

Reads the fee history of the last 20 blocks on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain and returns what a transaction costs right now.

Reads the fee history of the last 20 blocks on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain and returns what a transaction costs right now. Priority fees come from the 10th, 50th and 90th percentile of the tips actually paid in those blocks — the percentile used is named, not hidden. On rollups the L1 data fee is quoted separately from the L2 execution fee, because it is often the larger part and an estimate that merges them is simply wrong; the L1 part is computed from the cha

UNRATEDDelisted

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?

0x2880edff…771c4e5e

URL

https://kette.halowerk.com/gas

Seen

first 34 days ago · last 26 days ago

29 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.1

UN
RATED

0.407 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 0.593: 0.143 uncertain ? + 0.450 short ? · 0.043 to D

How the composite of 0.407 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	0.41	0.187		0.112	−0.351	−0.137
latency p95 it answered as fast as its class	0.20	0.51	0.473		0.095	−0.099	−0.007
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.407	gap to 1.000 = 0.593 · 0.450 short · 0.143 uncertain	0.407	−0.450	−0.143

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

The multiplication, written out

  0.600 × 0.187   liveness       
+ 0.200 × 0.473   latency p95    
+ 0.200 × 1.000   price stability
= 0.407           → UNRATED: 28 of 30 paid calls      weights 2026.09.1 · 28 samples · seed cap_01M1A5Q99R5VQ0TKK830GZKFDC|2026-08-15T21:06:38.212Z|2026.09.1

Verify it yourselfnpx teppi-check https://kette.halowerk.com/gascurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5Q99R5VQ0TKK830GZKFDC