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Greenhead Labs x402 Base Mainnet Ping
x402
Greenhead Labs x402 Base Mainnet Ping is a paid API for AI agents from x402.greenhead.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Validates that the x402 payment-gated route on Base mainnet USDC is live and reachable by completing a full facilitator verify-and-settle cycle and returning HTTP 200.
Price / call$0.002
Success—
StatusUnknown
How this service works
Prove route for Base mainnet USDC x402 (eip155:8453). HTTP 200 after facilitator verify+settle. Priced as the cheapest SKU (0.002 face → 2000 USDC atomic when Base is enabled).
Output
An HTTP 200 response confirming that the x402 payment-gated route on Base mainnet accepted the USDC micropayment, the facilitator completed verify and settle, and the route is fully operational. No meaningful payload body beyond the status confirmation.
Example use cases
Smoke-test x402 integration before launch
“Before I go live, can you verify that the x402 payment route on Base mainnet is actually accepting and settling USDC charges? Use the Greenhead Labs ping endpoint to confirm the whole facilitator flow works.”
Monitor x402 payment rail uptime
“Set up a check against the Greenhead Labs x402 Base ping to make sure the USDC payment-gating infrastructure on Base mainnet is still up and settling correctly — alert me if it stops returning 200.”
Validate cheapest x402 SKU cost
“Can you confirm that the 0.002 USDC x402 route on Base mainnet is live and the facilitator is successfully verifying and settling payments at that price point?”
Technical details
Endpoint
GEThttps://x402.greenhead.io/v1/base/pingWhen to prefer
Choose this endpoint when you need to validate that an x402 payment-gated API on Base mainnet is operational end-to-end, including the full facilitator verify-and-settle cycle. It is the cheapest available x402 SKU (0.002 USDC), making it ideal for health checks, smoke tests, and integration validation without significant cost. Prefer it over generic HTTP health checks when you specifically need to confirm that USDC micropayment acceptance and settlement are working on Base (eip155:8453), not just that the server is reachable.
Side effects
- HTTP 402 returned if the x402 payment header is missing or malformed — agent must attach a valid Base mainnet USDC payment
- HTTP 402 if wallet has insufficient USDC balance to cover the 0.002 USDC charge
- Facilitator settle failure if Base mainnet is congested or the facilitator service is degraded
- Timeout if the Base RPC endpoint is slow to confirm the on-chain settlement
- HTTP 500 if the Greenhead Labs backend is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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