x402 Engine MCP: POST /

https://x402-gateway-production.up.railway.app/

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://x402-gateway-production.up.railway.app/", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
  "replace": "with provider-approved input"
}),
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

Review the provider input schema before running this non-read-only method. No payment code is included.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Exact route checked2026-07-10 15:06 UTC
not safely testable · potentially-mutating-method:POST
Origin reachable2026-07-10 15:04 UTC
HEAD https://x402-gateway-production.up.railway.app/ returned 200.
Observed in toll402-curated2026-07-04 00:00 UTC
The registry record was observed and retained with provenance.

EVIDENCE

toll402-curatedobserved 2026-07-04 · https://github.com/agentc22/x402engine-mcp

origin checkHEAD https://x402-gateway-production.up.railway.app/ → 200 on 2026-07-10

route quotenot invoked automatically · potentially-mutating-method:POST · 2026-07-10

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call.

PAYMENT OPTIONS

The registry did not expose full payment options for this record.