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. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform use the x402 protocol on the Base network, accepting USDC payments with no API keys, no rate limits, and no commitments required.
The specific endpoint `/api/v1/stripe/subscriptions/106` is labeled "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 exact scheme to a designated wallet address on Base. The endpoint accepts POST requests and returns application/json responses.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no description of what "Premium API Access" actually returns or what input parameters it expects. The endpoint is live (returns a proper 402 challenge), but without documentation it is unclear what functionality this specific subscription endpoint provides beyond its name.
Capabilities
Use cases
- —Accessing premium API functionality with per-request USDC micropayments
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic access to subscription-related data or actions
Fit
Best for
- —Developers wanting keyless, pay-as-you-go API access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over traditional subscriptions
Not for
- —Users needing detailed API documentation before integrating
- —Applications requiring non-crypto payment methods
- —High-volume use cases where per-request pricing may not be cost-effective compared to bulk plans
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/106 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no explanation of what 'Premium API Access' actually does or what inputs it expects. The listing is effectively a stub.
Warnings
- —No documentation available — all doc/pricing/API/README pages render only 'Connect wallet'
- —No OpenAPI or schema describing request parameters or response format
- —The purpose of 'Premium API Access' at /api/v1/stripe/subscriptions/106 is unclear — the name suggests subscription management but no details are provided
- —No request or response examples available
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/106
- —The platform advertises $0.02 per 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/106
- —Docs, pricing, API, and README pages all show only 'Connect wallet' with no additional contenthttps://lowpaymentfee.com/docs