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 on the Base network. The specific resource at `/api/v1/charges/86` is one of many endpoints offered by the provider, which spans 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, settled in USDC (USD Coin) on Base with no API keys, rate limits, or commitments required.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the x402 "exact" scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, with a max amount of 20,000 base units of USDC (6 decimals), equating to $0.02 per call. The timeout for payment settlement is 300 seconds. The response MIME type is `application/json`.
Note that while the provider's landing page advertises a broad suite of endpoints (sentiment analysis, text summarization, geocoding, price feeds, etc.), this specific listing is for `/api/v1/charges/86`, which is labeled only as "Premium API Access" with no further documentation on what data or functionality it returns. The docs, pricing, API, and README pages all rendered as minimal "Connect wallet" stubs, providing no additional technical detail. The actual behavior behind this particular endpoint is 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 on Base for per-call API access
- —Use cases requiring no-signup, no-API-key access
Not for
- —Users who need detailed documentation on what the endpoint returns
- —High-volume use cases where $0.02/request adds up without bulk discounts
- —Users without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/charges/86 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example request/response, and no description of what this specific endpoint actually does. The docs pages are empty stubs. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, API, and README pages all render as 'Connect wallet' stubs with no content.
- —The specific functionality of /api/v1/charges/86 ('Premium API Access') is undocumented; it is unclear what data or service it provides.
- —No request or response schema is available; callers cannot know what to send or expect back.
- —The provider lists many endpoints on its landing page but this specific charge ID does not correspond to any named endpoint on that page.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, with maxAmountRequired of 20000 base units of USDChttps://lowpaymentfee.com/api/v1/charges/86
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/charges/86
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com