x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/stripe/charges/134` accepts POST requests and returns `application/json`. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The asset is USDC (contract `0x8335…2913` on Base) with a max amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — you pay per call.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. The endpoint's name "Premium API Access" and its path (`/stripe/charges/134`) suggest it may relate to Stripe charge data or a Stripe integration, but no schema, parameter documentation, or example responses are available. Without knowing the expected POST body or the response format, callers will need to experiment or contact the provider for details.
Capabilities
Use cases
- —Accessing premium data or services behind a per-call USDC paywall
- —Integrating Stripe charge information into automated workflows
- —Agent-driven API consumption with no API key or subscription required
Fit
Best for
- —Developers wanting zero-commitment, pay-per-use API access
- —AI agents that can settle x402 payments in USDC on Base
- —Users who prefer crypto micropayments over traditional API key subscriptions
Not for
- —Users who need detailed API documentation or schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/134 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the endpoint's actual functionality is unclear. The docs pages are empty beyond a wallet-connect prompt.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
- —No request body schema or response schema provided; callers must guess the expected input
- —The endpoint path '/api/v1/stripe/charges/134' suggests Stripe-related functionality but this is unconfirmed
- —The specific purpose of 'Premium API Access' at this path is ambiguous and may differ from the generic $0.02 APIs listed on the homepage
Citations
- —The endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base with maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/stripe/charges/134
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com