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Vauban Pay – x402 API Payment (Base Mainnet)
x402
Vauban Pay – x402 API Payment (Base Mainnet) is a paid API for AI agents from pay.vauban.tech, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-25).
Returns a payment quote for a per-call API fee denominated in USDC on Base mainnet, anchoring every transaction as a public record on Starknet.
Price / call$0.01
Success—
StatusUnknown
How this service works
Your agent pays per call and keeps the receipt, on Base and on Starknet. Try it with test money in one command.
Output
A payment quote object specifying the exact USDC amount due on Base mainnet, along with the data needed to authorize and complete the on-chain payment; successful settlement produces a public transaction record on Starknet serving as a receipt.
Example use cases
Micropayment gate for agent tool
“Before calling that paid API endpoint, get me a Vauban Pay quote for $0.01 USDC on Base mainnet so I can authorize and complete the payment and keep the Starknet receipt.”
On-chain audit trail for API spend
“I need every API call my agent makes to leave a public record on Starknet — use Vauban Pay to quote and process each $0.01 USDC payment on Base so I have a verifiable receipt for each one.”
Unlock per-call API access with stablecoin
“This API requires a pay-per-call fee — can you use Vauban Pay to get a USDC quote on Base mainnet and settle the $0.01 payment so the call goes through?”
Technical details
Endpoint
GEThttps://pay.vauban.tech/x402-base-mainnet/v1/quote?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent needs to pay for API access using the x402 pay-per-call protocol with USDC on Base mainnet and requires a publicly verifiable on-chain receipt anchored to Starknet. It is ideal for agent workflows that must comply with per-call billing, need audit trails, or want stablecoin-denominated micropayments rather than subscription-based access.
Side effects
- Insufficient USDC balance on Base mainnet — payment cannot be authorized
- Invalid or malformed request body — quote cannot be generated
- Network congestion on Base causing transaction delays or failures
- Starknet record anchoring failure if cross-chain bridge is unavailable
- Quote expiry if payment is not completed within the validity window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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