diff

Compares an old and a new list of JSON rows by a key field and returns what was added, removed and changed, with the old and new value of every changed field.

Compares an old and a new list of JSON rows by a key field and returns what was added, removed and changed, with the old and new value of every changed field. Use it to spot new leads, price changes or deleted items between two scrapes. Up to 500 rows a side. $0.001 per new row sent (old rows free), $0.002 minimum. Same engine as nerolabs/dataset-diff-detector.

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?

0xa969a312…1093164a

URL

https://x402-agent-tools.nerolabs.workers.dev/data/diff

Seen

first 1 day ago · last 14 hr ago

2 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.250 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 0.750: 0.750 uncertain ? + 0.000 short ? · 0.200 to D

How the composite of 0.250 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.75	1.00	0.000		0.000	0	−0.750
latency p95 it answered as fast as its class	0.25	1.00	1.000		0.250	0	0
Composite	1.00		0.250	gap to 1.000 = 0.750 · 0.000 short · 0.750 uncertain	0.250	−0.000	−0.750

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check; price stability · nothing to score

The multiplication, written out

  0.750 × 0.000   liveness   
+ 0.250 × 1.000   latency p95
= 0.250           → UNRATED: 1 of 30 paid calls      weights 2026.09.6 · 1 samples · seed cap_01M5H253SJPS1KFWB9VEGKTEVK|2026-09-22T06:38:51.896Z|2026.09.6

Verify it yourselfnpx teppi-check https://x402-agent-tools.nerolabs.workers.dev/data/diffcurl -s https://api.teppi.xyz/v1/trust/cap_01M5H253SJPS1KFWB9VEGKTEVK