replay

A stateful duplicate check for agents that settle x402 payments.

A stateful duplicate check for agents that settle x402 payments. Supply any of payment_id, payload_hash and nonce; each is hashed with SHA-256 before storage, so the service keeps fingerprints and timestamps and never the values themselves, never a payload, never an address. The answer states for every supplied identifier whether it was seen before, when it was first and last seen, how often, and whether the first sighting falls inside window_seconds. The recommendation is ablehnen only for a re

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://x402.halowerk.com/guard/replay

Seen

first 35 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

0.422 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 0.578: 0.137 uncertain ? + 0.441 short ? · 0.028 to D

How the composite of 0.422 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	0.55	0.549		0.110	−0.090	0
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.422	gap to 1.000 = 0.578 · 0.441 short · 0.137 uncertain	0.422	−0.441	−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 × 0.187   liveness       
+ 0.200 × 0.549   latency p95    
+ 0.200 × 1.000   price stability
= 0.422           → UNRATED: 28 of 30 paid calls      weights 2026.09.1 · 28 samples · seed cap_01M1A5Q99X990FV2DS1RAG5YGA|2026-08-15T21:06:38.212Z|2026.09.1

Verify it yourselfnpx teppi-check https://x402.halowerk.com/guard/replaycurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5Q99X990FV2DS1RAG5YGA