x402-gated premium API access on Base, paid per-call in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities — all settled on the Base network using USDC.
The specific endpoint `/api/v1/stripe/subscriptions/92` is listed as "Premium API Access" and costs up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC, which has 6 decimals = $0.02). Payment is made via the x402 protocol's "exact" scheme: callers attach an X-PAYMENT header with a signed USDC payment on Base to the payTo address. No API keys or rate limits are advertised; access is purely payment-gated. The endpoint accepts POST requests and returns application/json.
The platform's documentation pages (docs, pricing, README) all resolve but display only a "Connect wallet" prompt, so detailed request/response schemas and usage documentation are unavailable. The endpoint name suggests it may relate to Stripe subscription management, but no further details are provided in the crawled material. The x402 challenge was successfully captured (HTTP 402), confirming the endpoint is live.
Capabilities
Use cases
- —Programmatic access to premium API functionality with per-call USDC payments
- —Agent-driven API consumption without pre-registration or API keys
- —Integrating pay-as-you-go API calls into Web3 workflows
Fit
Best for
- —Developers or agents wanting keyless, pay-per-call API access on Base
- —Web3-native applications that can sign USDC transactions
- —Low-volume or bursty usage patterns where subscriptions are undesirable
Not for
- —Users without a Base-compatible wallet or USDC balance
- —High-volume consumers who need bulk pricing or traditional subscription billing
- —Anyone needing detailed API documentation before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/92 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-token>"Endpoint
Quality
The x402 challenge is live and confirms pricing and payment details, but there is no OpenAPI schema, no request/response examples, and all documentation pages return only a wallet-connect prompt. The endpoint's actual functionality ("Premium API Access" / "stripe/subscriptions/92") is opaque — it is unclear what data or service it provides.
Warnings
- —All documentation pages (/docs, /pricing, /README, /api) return only a 'Connect wallet' prompt with no usable content.
- —The endpoint name 'stripe/subscriptions/92' suggests Stripe subscription management, but no schema or description clarifies what it actually does.
- —No request body schema or response schema is available; integration requires trial-and-error or out-of-band documentation.
- —outputSchema contains only transport metadata (HTTP POST), no payload schema.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/92
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/92
- —Documentation pages resolve but show only 'Connect wallet'https://lowpaymentfee.com/docs