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 multiple API categories — data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all gated via the x402 protocol on the Base network, settled in USDC.
The specific endpoint `/api/v1/stripe/subscriptions/126` is listed as "Premium API Access" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). Payment is made via the x402 exact scheme to the specified payTo address, with a 300-second timeout. No API keys or rate limits are advertised; access is instant upon payment.
The platform's documentation pages (docs, pricing, README) all resolve but contain only a "Connect wallet" prompt, providing no further technical detail about request/response schemas, expected input parameters, or what data the endpoint actually returns. The endpoint name suggests it relates to Stripe subscription management, but no concrete documentation confirms what payload to send or what response to expect. Because of this lack of documentation, agents should treat this endpoint with caution until more details are available.
Capabilities
Use cases
- —Programmatic access to a premium API resource with per-call USDC payment on Base
- —Agent-driven subscription or payment operations without API key management
- —Integrating x402-gated services into automated workflows
Fit
Best for
- —Developers or agents wanting keyless, pay-per-use API access on Base
- —x402-compatible agents that can settle USDC micropayments
- —Exploring x402 protocol integrations with minimal commitment
Not for
- —Users needing detailed API documentation or guaranteed SLAs before integrating
- —High-volume use cases where $0.02/request adds up without bulk discounts
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/126 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Example
Request
{
"url": "https://lowpaymentfee.com/api/v1/stripe/subscriptions/126",
"body": {},
"method": "POST",
"headers": {
"X-PAYMENT": "<x402-payment-header>",
"Content-Type": "application/json"
}
}Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation on request parameters, response schema, or what the endpoint actually does beyond the name "Premium API Access". All doc pages return only "Connect wallet" with no content. The endpoint path suggests Stripe subscription functionality but nothing confirms this.
Warnings
- —No documentation available — all doc/pricing/README pages show only 'Connect wallet' with no technical content.
- —Request and response schemas are completely unknown; the endpoint name 'stripe/subscriptions/126' is suggestive but unverified.
- —The purpose and behavior of this specific endpoint cannot be confirmed from available materials.
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network with a 300-second timeout.https://lowpaymentfee.com/api/v1/stripe/subscriptions/126
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/stripe/subscriptions/126