x402-gated Stripe invoice endpoint on Base, paying $0.02 in USDC per request.
What it does
This endpoint at lowpaymentfee.com provides access to a Stripe invoice resource (invoice ID 79) behind an x402 paywall. It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure utility categories — all priced at $0.02 per call, settled in USDC on the Base network.
The specific endpoint `/api/v1/stripe/invoices/79` accepts POST requests and returns `application/json`. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The price is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a maximum timeout of 300 seconds.
The platform advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /api, /README) all appear to require a wallet connection and contain no substantive content in the crawl. As a result, the actual response schema and detailed functionality of this specific invoice endpoint are unknown beyond the x402 challenge metadata. The broader site lists many other endpoints but this listing covers only the `/api/v1/stripe/invoices/79` resource.
Capabilities
Use cases
- —Retrieving or interacting with a specific Stripe invoice via a crypto-paywall
- —Agent-driven invoice processing without API key management
- —Programmatic access to invoice data with per-request USDC micropayments
Fit
Best for
- —Agents that need keyless, pay-per-use access to invoice data
- —Developers experimenting with x402 protocol integrations
- —Workflows requiring on-chain payment settlement for API calls
Not for
- —Bulk invoice processing where per-request fees add up quickly
- —Users who need detailed documentation or response schema guarantees before integrating
- —Non-crypto workflows that cannot produce x402 payment headers
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/79 \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, and all documentation pages returned only a wallet-connect prompt with no content. The purpose of this specific Stripe invoice endpoint is unclear beyond its title.
Warnings
- —No response schema or request body documentation available — actual functionality is unknown
- —All doc pages (/docs, /pricing, /api, /README) returned no substantive content in crawl
- —The endpoint path references a specific Stripe invoice ID (79); unclear if this is a demo or production resource
- —No OpenAPI spec or AI plugin manifest found
Citations
- —The endpoint returns a 402 challenge with x402Version 1, requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/stripe/invoices/79
- —Price is 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/stripe/invoices/79
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Platform lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com