x402-gated premium API endpoint on Base, payable in USDC per request.
What it does
This endpoint at lowpaymentfee.com is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories. The specific endpoint `/api/v1/stripe/charges/94` is labeled "Premium API Access" and is gated via the x402 protocol on the Base network.
The x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment in USDC (contract 0x8335…2913 on Base). The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02 per request. The platform advertises a flat $0.02/request pricing model with no API keys, no rate limits, and instant access.
However, the actual functionality behind this specific endpoint path (`/stripe/charges/94`) is unclear. It does not correspond to any of the documented API categories (analytics, AI, finance, infrastructure) listed on the landing page. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no further documentation. Without an OpenAPI schema, request/response examples, or detailed docs, the precise behavior of this endpoint cannot be confirmed from available materials.
Capabilities
Use cases
- —Paying for premium API access without traditional API keys or subscriptions
- —Integrating crypto-native pay-per-request billing into agent workflows
- —Accessing gated endpoints using USDC on Base L2
Fit
Best for
- —Developers wanting keyless, pay-per-use API access
- —AI agents with x402-compatible payment capabilities
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed API documentation or OpenAPI specs before integrating
- —Applications requiring free or high-volume bulk access at discounted rates
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/94 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no OpenAPI schema, no request/response examples, and no documentation beyond a wallet-connect prompt. The specific functionality of this endpoint path is undocumented and unclear.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —Docs, pricing, and API pages all render only 'Connect wallet' with no content
- —The endpoint path /api/v1/stripe/charges/94 does not match any documented API category on the landing page
- —Actual response payload and functionality are unknown
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/stripe/charges/94
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stripe/charges/94