MCP server

LaunchCheck x402

io.github.apolito53/launchcheck-x402

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Paid x402 MCP tool for stress-testing launch and marketing copy before publication.

Working at last checkAbout 600 tokens per request once connected1 tools

https://launchcheck-x402.fly.dev/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 1
Token cost: About 600 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http launchcheck-x402 https://launchcheck-x402.fly.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.launchcheck-x402]
url = "https://launchcheck-x402.fly.dev/mcp"

Gemini CLI

{"mcpServers":{"launchcheck-x402":{"httpUrl":"https://launchcheck-x402.fly.dev/mcp"}}}

Cursor

{"mcpServers":{"launchcheck-x402":{"url":"https://launchcheck-x402.fly.dev/mcp"}}}

VS Code

{"servers":{"launchcheck-x402":{"type":"http","url":"https://launchcheck-x402.fly.dev/mcp"}}}

Antigravity

agy mcp add launchcheck-x402 https://launchcheck-x402.fly.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"launchcheck-x402","server_url":"https://launchcheck-x402.fly.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"launchcheck-x402","server_url":"https://launchcheck-x402.fly.dev/mcp"}

reaction_check ~600 tokens
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

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