x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.
What it does
This endpoint is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. The specific resource at `/api/v1/generate/resource/140` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. It is likely one of the generation/utility endpoints offered by the platform.
Payment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per call is 20,000 base units of USDC, which at 6 decimals equals $0.02 USD — consistent with the platform's advertised flat pricing of $0.02 per request. The endpoint accepts HTTP POST requests and returns `application/json` responses. No API keys are required; payment is made inline via the `X-PAYMENT` header per the x402 specification.
The platform advertises no rate limits, no minimum commitments, and instant access. However, documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what data or functionality this specific resource provides. Agents should treat this as a low-documentation endpoint where the actual behavior must be discovered empirically.
Capabilities
Use cases
- —Programmatic access to a generation/utility endpoint with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Testing x402 protocol integrations with a low-cost endpoint
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing keyless pay-per-request API access
- —Low-cost micropayment API consumption on Base L2
Not for
- —Users who need well-documented API contracts and schemas before integration
- —High-volume production workloads requiring SLA guarantees
- —Anyone needing to understand exact endpoint behavior before paying
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/140 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality of resource/140 is unknown. All non-landing pages return only a 'Connect wallet' stub.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
- —The specific functionality of /api/v1/generate/resource/140 is undocumented; 'Premium API Access' is the only descriptor
- —No OpenAPI schema or request/response examples are provided
- —No information on what input the POST body should contain or what the response looks like
Citations
- —Platform advertises $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —x402 challenge shows maxAmountRequired of 20000 base units of USDC (6 decimals = $0.02) on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/140
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/generate/resource/140
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs