x402-gated premium API access on Base, paid per-request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform use the x402 protocol on the Base network, settling payments in USDC.
The specific endpoint `/api/v1/stripe/subscriptions/99` is labeled "Premium API Access" and requires a maximum payment of 20,000 base units of USDC (0.02 USD) per request. The x402 challenge confirms the endpoint is live, accepting POST requests, and paying to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The payment scheme is "exact" with a 300-second timeout.
However, the actual functionality behind this specific endpoint is unclear. The URL path suggests something related to Stripe subscriptions, but no documentation, request schema, or response schema is available beyond the x402 challenge metadata. The platform's docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. Without knowing what data or service this endpoint returns, agents should treat this as a stub listing until more documentation becomes available.
Capabilities
Use cases
- —Programmatic access to a premium API service paid per-call in USDC on Base
- —Agent-driven API consumption without API keys or subscriptions
- —Demonstrating x402 payment protocol integration
Fit
Best for
- —Developers experimenting with x402 payment-gated APIs
- —Agents that can settle USDC payments on Base
- —Use cases requiring keyless, pay-as-you-go API access
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Applications requiring known, well-documented response schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/99 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The x402 challenge is live and confirms pricing and network details, but there is no documentation, no request/response schema, and no explanation of what the endpoint actually returns. The docs pages are empty ("Connect wallet" only). This is effectively a stub.
Warnings
- —No documentation available — docs, pricing, and API pages all render only 'Connect wallet' with no content.
- —The actual functionality of /api/v1/stripe/subscriptions/99 is unknown; the URL path suggests Stripe subscription management but nothing confirms this.
- —No request or response schema is provided beyond the x402 outputSchema stub.
- —The platform lists many endpoints but none have documented behavior or example responses.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/99
- —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 is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/99
- —Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3https://lowpaymentfee.com/api/v1/stripe/subscriptions/99