retention

Builds the cohort table from the events you pass: users grouped by the period of their first event, counted again in each following period.

Builds the cohort table from the events you pass: users grouped by the period of their first event, counted again in each following period. Returns the table per cohort, a retention curve across all cohorts, and, where events carry a value, cumulative value and value per user. The curve counts only cohorts old enough for a given period, so a young cohort is not scored as churn. Day, week and month are real calendar periods. Nothing is fetched, nothing is stored.

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://tools.halowerk.com/v1/cohort/retention

Seen

first 34 days ago · last 16 days ago

49 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.4

UN
RATED

0.606 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.394: 0.125 uncertain ? + 0.269 short ? · 0.044 to C

How the composite of 0.606 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	0.89	0.677		0.406	−0.069	−0.125
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.606	gap to 1.000 = 0.394 · 0.269 short · 0.125 uncertain	0.606	−0.269	−0.125

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

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.677   liveness       
+ 0.200 × 1.000   price stability
= 0.606           → UNRATED: 49 of 30 paid calls      weights 2026.09.4 · 49 samples · seed cap_01M1A59S7RJEYP5R84CKZ4K7F2|2026-08-26T02:56:05.752Z|2026.09.4

Verify it yourselfnpx teppi-check https://tools.halowerk.com/v1/cohort/retentioncurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59S7RJEYP5R84CKZ4K7F2