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, settling payments in USDC on the Base network. The specific endpoint path `/api/v1/stripe/charges/107` is listed under the provider's broader platform, which offers a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform share a uniform $0.02 per request pricing model with no API keys, no rate limits, and instant access.
The x402 challenge confirms the endpoint is live, accepting POST requests and requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds. The response MIME type is application/json.
However, the specific functionality behind this particular endpoint path (`/stripe/charges/107`) is not documented on the provider's landing page — it does not appear in any of the listed API categories. The crawled docs, pricing, and README pages all returned only a "Connect wallet" prompt with no additional documentation. Without an OpenAPI spec, request/response schemas, or detailed docs, the actual behavior and input parameters of this endpoint remain unclear.
Capabilities
Use cases
- —Programmatic access to a premium API resource with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Testing x402 payment flows against a live endpoint
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that can settle USDC payments on Base L2
- —Use cases requiring no API key or account signup
Not for
- —Users who need detailed documentation or OpenAPI specs before integrating
- —Production workloads requiring well-documented request/response contracts
- —Users without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/107 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing. However, the specific endpoint path is not documented on the provider's site, there is no OpenAPI spec, no request/response schema, and all documentation pages return only a wallet-connect prompt. The actual functionality behind this endpoint is unknown.
Warnings
- —The endpoint path /api/v1/stripe/charges/107 does not appear in the provider's listed API catalog — its specific functionality is undocumented.
- —No OpenAPI spec, request schema, or response schema is available.
- —All documentation pages (docs, pricing, README, api) returned only a 'Connect wallet' prompt with no useful content.
- —The actual data or service returned by this endpoint is unclear — 'Premium API Access' is a generic label.
Citations
- —The provider lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories, all at $0.02/request.https://lowpaymentfee.com
- —Platform advertises no API keys, no rate limits, instant access, Base network settlement.https://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.https://lowpaymentfee.com/api/v1/stripe/charges/107