reaction-check

Review and stress-test launch messaging, landing pages, product announcements, pricing pages, changelogs, app-store listings, and marketing emails before publication.

Review and stress-test launch messaging, landing pages, product announcements, pricing pages, changelogs, app-store listings, and marketing emails before publication. LaunchCheck evaluates copy through eight audience lenses, surfaces positioning and conversion friction, flags claims needing evidence, predicts likely reader questions, recommends concrete changes, and returns a fact-preserving rewrite.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.50 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x87f929c4…2b28dba4

URL

https://launchcheck-x402.fly.dev/v1/reaction-check

MCP server on this host: io.github.apolito53/launchcheck-x402

Seen

first 35 days ago · last 2 days ago

64 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.734 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.266: 0.066 uncertain ? + 0.200 short ? · 0.066 to B

How the composite of 0.734 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	1.00	0.890		0.534	0	−0.066
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.734	gap to 1.000 = 0.266 · 0.200 short · 0.066 uncertain	0.734	−0.200	−0.066

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 × 0.890   liveness       
+ 0.200 × 1.000   price stability
= 0.734           → UNRATED: 56 of 30 paid calls      weights 2026.09.6 · 56 samples · seed cap_01M1A59SHR60WGWH28BBHPS12M|2026-09-03T19:06:19.953Z|2026.09.6

Verify it yourselfnpx teppi-check https://launchcheck-x402.fly.dev/v1/reaction-checkcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59SHR60WGWH28BBHPS12M