x402-gated premium API access on Base, paid per-request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. The specific endpoint `/api/v1/stripe/subscriptions/80` is part of a broader platform that offers a variety of API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request and settle payments in USDC on the Base network via the x402 protocol.
The x402 challenge for this particular endpoint advertises a maxAmountRequired of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which uses 6 decimals), equating to $0.02 per call. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds. The endpoint accepts POST requests and returns application/json.
However, the exact functionality of this specific endpoint (`/stripe/subscriptions/80`) is unclear. The platform's landing page lists many other endpoints but does not specifically document this one. The "Premium API Access" label and the `/stripe/subscriptions/` path suggest it may relate to managing or creating Stripe subscription resources, but no schema, request parameters, or response format documentation was found. The docs, pricing, and API pages all returned only a "Connect wallet" prompt with no substantive content.
Capabilities
Use cases
- —Programmatic access to premium API functionality with per-call USDC payments
- —Agent-driven API consumption without API keys or subscriptions
- —On-chain settled API calls for Web3-native applications
Fit
Best for
- —Developers wanting keyless, pay-per-use API access
- —AI agents that can settle x402 payments in USDC on Base
- —Users who prefer crypto micropayments over traditional subscription billing
Not for
- —Users needing detailed API documentation or schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/80 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation for this specific endpoint's purpose, request parameters, or response schema. The docs/pricing/API pages are all empty beyond a wallet connect prompt. The endpoint path (/stripe/subscriptions/80) is not listed among the platform's advertised APIs, making its functionality opaque.
Warnings
- —No documentation found for this specific endpoint (/api/v1/stripe/subscriptions/80) — its purpose and expected request/response format are unknown.
- —All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no substantive content.
- —This endpoint is not listed among the platform's advertised API catalog on the landing page.
- —The '/stripe/subscriptions/' path naming is ambiguous — it may relate to Stripe subscription management but this is unconfirmed.
Citations
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and settlement on Base network.https://lowpaymentfee.com
- —The x402 challenge shows maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.https://lowpaymentfee.com/api/v1/stripe/subscriptions/80
- —The platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories.https://lowpaymentfee.com