x402-gated Stripe invoice endpoint on Base, paying per-call in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a Stripe invoice resource (invoice ID 192) behind an x402 paywall. The provider operates a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 protocol on the Base network and settled in USDC.
The specific endpoint `/api/v1/stripe/invoices/192` is described by the provider simply as "Premium API Access." The x402 challenge confirms it accepts POST requests, charges up to 0.02 USDC per call (20,000 base units with 6 decimals), and pays out to a specified Ethereum address on Base. The asset contract matches USDC on Base (0x8335…2913). No API keys or rate limits are advertised; access is granted purely through the x402 payment header.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no explanation of what data this particular invoice endpoint actually returns. The platform's landing page lists many endpoints at $0.02 each but provides no detail on request formats or response payloads. Prospective users should be aware that the actual functionality behind this endpoint is undocumented.
Capabilities
Use cases
- —Retrieving Stripe invoice data via a single paid API call
- —Programmatic access to invoice #192 without traditional API key management
- —Agent-driven payment-gated data retrieval on Base
Fit
Best for
- —Developers experimenting with x402 payment-gated APIs
- —Agents that can settle USDC payments on Base automatically
- —Users needing keyless, pay-per-request access to invoice data
Not for
- —Anyone needing well-documented API contracts or response schemas
- —Production systems requiring guaranteed SLAs or support
- —Bulk invoice retrieval or batch operations
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/192 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the endpoint actually returns, no OpenAPI schema, no request/response examples, and all doc pages render only 'Connect wallet'. The listing title 'Premium API Access' is generic and uninformative.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or request/response schema provided
- —The purpose of '/api/v1/stripe/invoices/192' is unclear — 'Premium API Access' is not descriptive
- —Cannot verify what data or functionality this endpoint actually provides
Citations
- —The x402 challenge returns maxAmountRequired of 20000 in USDC (6 decimals) on Base, equaling $0.02https://lowpaymentfee.com/api/v1/stripe/invoices/192
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stripe/invoices/192
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs