preflight402 for Claude Desktop
io.ironshell/preflight402
Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.
client:Claude Desktop
transport:streamable-http
Install preflight402 in Claude Desktop
~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json
{
"mcpServers": {
"preflight402": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://preflight402.ironshell.io/mcp"
]
}
}
}Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs