x402 Preflight is answering right now. Last checked 1 min ago. It exposes 3 tools. Last commit 1 Sep 2026.
Inspect and validate an x402 endpoint before an autonomous agent spends USDC.
Nothing serious here today
Today is the operative word: we check x402 Preflight every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.
claude mcp add x402-preflight --transport http https://x402-wallet-readiness-service.vercel.app/mcp{
"mcpServers": {
"x402-preflight": {
"url": "https://x402-wallet-readiness-service.vercel.app/mcp"
}
}
}[mcp_servers.x402-preflight]
url = "https://x402-wallet-readiness-service.vercel.app/mcp"{
"mcpServers": {
"x402-preflight": {
"url": "https://x402-wallet-readiness-service.vercel.app/mcp"
}
}
}{
"mcpServers": {
"x402-preflight": {
"url": "https://x402-wallet-readiness-service.vercel.app/mcp"
}
}
}Available tools 3
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
audit_x402_endpoint
inspect_x402_endpoint
order_x402_remediation
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://x402-wallet-readiness-service.vercel.app/mcp | streamable-http | answering | 273 ms | 1 min ago |
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x402 Preflight — questions
Answers built from our own checks of this server.