Review and stress-test launch messaging, landing pages, product announcements, pricing pag
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.
500000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-02
updated
Provider
launchcheck-x402.fly.dev · discovered, not yet claimed by its owner
Payment (x402 accepts[])
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}Use it
curl
curl "https://launchcheck-x402.fly.dev/v1/reaction-check" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://launchcheck-x402.fly.dev/v1/reaction-check");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://launchcheck-x402.fly.dev/v1/reaction-check")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/12369.json, and this resource appears in /discovery/resources and /discovery/search.