Connect LaunchCheck x402 and your agent gets 1 tool, among them reaction_check. It answers at https://launchcheck-x402.fly.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 21 October 2026, succeeded.
Paid x402 MCP tool for stress-testing launch and marketing copy before publication.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
reaction_check | 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 positi Inputs: content, contentType, productContext, targetAudience, desiredAction, constraints |
Every block below points at https://launchcheck-x402.fly.dev/mcp. Pick your client and copy.
claude mcp add --transport http launchcheck-x402 https://launchcheck-x402.fly.dev/mcp
{
"mcpServers": {
"launchcheck-x402": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://launchcheck-x402.fly.dev/mcp"]
}
}
}{
"mcpServers": {
"launchcheck-x402": {
"url": "https://launchcheck-x402.fly.dev/mcp"
}
}
}{
"servers": {
"launchcheck-x402": {
"type": "http",
"url": "https://launchcheck-x402.fly.dev/mcp"
}
}
}{
"context_servers": {
"launchcheck-x402": {
"url": "https://launchcheck-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"launchcheck-x402": {
"serverUrl": "https://launchcheck-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"launchcheck-x402": {
"url": "https://launchcheck-x402.fly.dev/mcp"
}
}
}name: LaunchCheck x402
version: 0.0.1
schema: v1
mcpServers:
- name: LaunchCheck x402
type: streamable-http
url: https://launchcheck-x402.fly.dev/mcp{
"mcpServers": {
"launchcheck-x402": {
"httpUrl": "https://launchcheck-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"launchcheck-x402": {
"type": "http",
"url": "https://launchcheck-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"launchcheck-x402": {
"url": "https://launchcheck-x402.fly.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Flaunchcheck-x402.fly.dev%2Fmcp&type=streamable_http&id=launchcheck-x402&name=LaunchCheck%20x402
It answered our last check on 21 October 2026 in 3172 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
1, as returned by the server's own tools/list on 13 September 2026: reaction_check.
It answered our last check on 21 October 2026 in 3172 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://launchcheck-x402.fly.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.apolito53. Endpoint host: launchcheck-x402.fly.dev. ARD identifier: urn:air:io.github.apolito53:mcp:launchcheck-x402.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.