x402-gated premium API endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at `/api/endpoint-76` is part of lowpaymentfee.com, a platform offering a variety of x402-gated API endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The specific endpoint is labeled "Premium API Access" and accepts POST requests, returning application/json responses. Payment is handled via the x402 protocol on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).
The platform advertises a flat $0.02 per request across its listed endpoints, though the x402 challenge for this particular endpoint specifies a maxAmountRequired of 20000 (in USDC's 6-decimal representation, this equals $0.02). The platform emphasizes no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
However, the actual functionality behind `/api/endpoint-76` is unclear. It does not appear in the site's listed API catalog (which uses `/api/v1/` and `/api/v2/` path patterns), and no documentation, input schema, or example responses are available. The docs, pricing, and other subpages returned only a "Connect wallet" prompt with no substantive content. Without knowing what this endpoint does, callers should treat it as an opaque premium endpoint with unverified capabilities.
Capabilities
Use cases
- —Programmatic access to a premium API service via x402 micropayments
- —Agent-driven API consumption without API key registration
- —On-chain pay-per-request access on Base
Fit
Best for
- —Developers or agents wanting keyless, pay-per-request API access
- —x402-compatible agents on the Base network
- —Users who prefer USDC micropayments over subscription billing
Not for
- —Users who need documented input/output schemas before calling
- —Anyone requiring free or trial access to evaluate functionality
- —Use cases requiring high-throughput with predictable flat-rate pricing
Quick start
curl -X POST https://lowpaymentfee.com/api/endpoint-76 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and payment terms are clear, but there is zero documentation on what the endpoint actually does, no input/output schema, and the endpoint path does not match any of the site's cataloged APIs. Docs pages are empty. This is effectively a stub listing.
Warnings
- —Endpoint /api/endpoint-76 is not listed in the site's public API catalog — its actual functionality is unknown.
- —All documentation pages (docs, pricing, README, api) returned only 'Connect wallet' with no substantive content.
- —No input schema or output schema is provided; callers cannot know what request body to send or what response to expect.
- —The description 'Premium API Access' is generic and does not describe any specific capability.
Citations
- —The x402 challenge returns status 402 with maxAmountRequired of 20000 USDC on Base network.https://lowpaymentfee.com/api/endpoint-76
- —The platform lists APIs at $0.02/request with no API keys, no rate limits, and instant access.https://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/endpoint-76
- —Docs, pricing, and README pages returned only 'Connect wallet' with no documentation content.https://lowpaymentfee.com/docs