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x402 Facilitator Failover
x402
x402 Facilitator Failover is a paid API for AI agents from x402-agent-suite-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Provides a failover facilitator endpoint for x402 payment-gated HTTP requests, validating and routing GET/HEAD/DELETE requests after x402 payment settlement.
Price / call$0.05
Success—
StatusUnknown
How this service works
24 paid x402 infrastructure APIs for AI agent fleets: buy advisor, audition coach, guard, proxy, MPP, attestations, and pipeline orchestration.
Output
Returns a JSON object with 'ok' (boolean indicating request success), 'allowed' (boolean indicating whether the payment-gated resource access is permitted), and 'summary' (a human-readable string describing the outcome after x402 payment settlement).
Example use cases
Failover during primary facilitator outage
“The main x402 facilitator is unavailable — use the failover facilitator to validate whether my settled x402 payment allows this GET request to go through.”
Resilient agent pipeline payment gating
“I need my AI agent fleet to fall back to the x402 Agent Suite failover endpoint for any HEAD requests that need payment validation when the primary facilitator is unreachable.”
Verify x402 payment settlement on DELETE
“Can you use the x402 facilitator failover to confirm that the payment for this DELETE request has been settled and that access is permitted?”
Technical details
Endpoint
POSThttps://x402-agent-suite-production.up.railway.app/api/facilitator/failoverWhen to prefer
Use this endpoint specifically when your primary x402 facilitator is unavailable or experiencing downtime and you need a resilient backup to validate payment settlement for read-only or idempotent HTTP operations (GET, HEAD, DELETE). Prefer this over building your own failover logic when operating AI agent fleets that depend on continuous x402-gated API access.
Side effects
- Primary facilitator also unavailable — cascading outage returns error
- Payment not yet settled — allowed returns false with explanatory summary
- Invalid HTTP method supplied (only GET, HEAD, DELETE accepted) — schema validation error
- Malformed input object — 422 or 400 validation error
- x402 payment signature invalid or expired — request rejected with not-allowed response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"allowed": true,
"summary": "Paid response after x402 settlement"
}
}Tags
x402
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