Pay-per-call Stripe invoice API on Base network via x402, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" to a Stripe invoices resource (invoice ID 130) via the x402 payment protocol. It accepts POST requests and charges 20,000 base units of USDC (0x8335…) on the Base network, which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required; payment is handled inline via the X-PAYMENT header.
The broader lowpaymentfee.com platform offers multiple API categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request and settle on the Base network in USDC.
The specific endpoint probed (/api/v1/stripe/invoices/130) appears to be a Stripe invoice-related resource. However, documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl.
Capabilities
Use cases
- —Retrieving or interacting with Stripe invoice data without traditional API key management
- —Programmatic access to invoice information with per-call crypto payment
- —Agent-driven invoice lookups settled instantly on Base L2
Fit
Best for
- —Developers wanting keyless, pay-as-you-go API access
- —AI agents that can settle x402 payments autonomously
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed API documentation or OpenAPI specs before integrating
- —High-volume batch processing where per-call pricing becomes expensive
- —Users without USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/130 \
-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 no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The actual functionality of the Stripe invoices endpoint is unclear.
Warnings
- —No OpenAPI or schema documentation available
- —Docs/API/pricing/README pages all render only 'Connect wallet' with no technical content
- —Exact request body format and response structure are unknown
- —The purpose of '/api/v1/stripe/invoices/130' is not clearly documented
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stripe/invoices/130
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stripe/invoices/130