Pay-per-call Stripe invoice API endpoint on Base network via x402, $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a Stripe invoice resource (invoice ID 124) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum cost of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).
The broader lowpaymentfee.com platform advertises multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities—all priced at $0.02 per request with no API keys, no rate limits, and instant access. However, the specific endpoint listed here (/api/v1/stripe/invoices/124) does not appear in the site's publicly documented API catalog, and its exact functionality (beyond being labeled "Premium API Access") is unclear. No OpenAPI schema, request/response examples, or detailed documentation were found for this particular route.
The endpoint is confirmed live: it returns a proper x402 402 challenge with version 1, scheme "exact", and a 300-second payment timeout. The payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.
Capabilities
Use cases
- —Retrieving Stripe invoice data without traditional API key authentication
- —Programmatic access to invoice #124 via crypto micropayment
- —Agent-driven invoice lookup settled in USDC on Base
Fit
Best for
- —Agents needing keyless, pay-per-use access to invoice data
- —Developers experimenting with x402 payment protocol
- —Scenarios requiring no subscription or rate-limit constraints
Not for
- —Bulk invoice retrieval or batch processing (single invoice endpoint)
- —Users who need detailed documentation or guaranteed SLA
- —Non-crypto users who cannot settle payments on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/124 \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no request/response examples, and no documentation explaining what data is returned. The specific endpoint path (/api/v1/stripe/invoices/124) is not listed in the site's public catalog, making its purpose unclear beyond the generic label.
Warnings
- —No documentation or schema available for this specific endpoint
- —Endpoint path not listed in the site's public API catalog
- —Exact request body format and response structure are unknown
- —Purpose of 'Premium API Access' label is ambiguous—may be a demo or placeholder
Citations
- —Endpoint returns x402 402 challenge with maxAmountRequired 20000 USDC on Base networkhttps://lowpaymentfee.com/api/v1/stripe/invoices/124
- —Platform pricing is $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stripe/invoices/124