Evaluate x402 PaymentRequired against a local spending policy before an agent pays
Connect Runs on your machine
claude mcp add preflight -e PAYSTAGE_POLICY_PATH=<PAYSTAGE_POLICY_PATH> -- npx -y @paystage/[email protected]{
"mcpServers": {
"preflight": {
"command": "npx",
"args": [
"-y",
"@paystage/[email protected]"
],
"env": {
"PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>"
}
}
}
}{
"mcpServers": {
"preflight": {
"command": "npx",
"args": [
"-y",
"@paystage/[email protected]"
],
"env": {
"PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>"
}
}
}
}{
"servers": {
"preflight": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@paystage/[email protected]"
],
"env": {
"PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
PAYSTAGE_POLICY_PATHOptional | Path to policy.json spending rules |
Details
| Package | @paystage/[email protected] (NPM, stdio) |
| First published | 10 Nov 2026 |
| Last updated | 10 Nov 2026 |
| Registry name | xyz.paystage/preflight |
More finance and crypto servers See all
Listing data from the official MCP registry. Status and tools from NestDaddy's daily check. Browse all MCP servers.