x402-gated premium API endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at `/api/endpoint-10` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The endpoint is labeled "Premium API Access" and accepts POST requests, returning application/json responses. Payment is handled via the x402 exact scheme on the Base network using USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).
The specific functionality of `/api/endpoint-10` is not documented — the provider's site lists endpoints under `/api/v1/` and `/api/v2/` paths but does not describe this particular route. The x402 challenge indicates a maximum payment of 20,000 units of USDC (likely 0.02 USDC given 6 decimals, consistent with the site's advertised $0.02/request pricing). There is no OpenAPI schema, no input/output documentation, and no usage examples available for this endpoint. The docs, pricing, and API pages on the site render only a "Connect wallet" prompt with no additional content.
Because the endpoint's actual purpose is unknown — it could be any of the listed service categories or something else entirely — agents should treat this as an opaque premium endpoint until the provider publishes proper documentation. The endpoint is confirmed live via a valid 402 challenge response.
Capabilities
Use cases
- —Accessing a pay-per-request API without API keys or subscriptions
- —Making micropayment-gated API calls using USDC on Base
- —Agent-driven programmatic access to premium endpoints via x402
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that can handle x402 USDC payment flows on Base
- —Users who want keyless, commitment-free API access
Not for
- —Anyone needing documented input/output schemas before integration
- —Use cases requiring free or non-crypto payment methods
- —Production systems that need SLA guarantees or detailed documentation
Quick start
curl -X POST https://lowpaymentfee.com/api/endpoint-10
# Returns 402 with X-PAYMENT challenge; attach a valid x402 payment header to proceed.Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is inferrable, but there is zero documentation on what this endpoint actually does, no input/output schema, and no examples. The /api/endpoint-10 path is not listed among the provider's documented endpoints. This is effectively a stub listing.
Warnings
- —The specific functionality of /api/endpoint-10 is completely undocumented — the provider's site does not list or describe this path.
- —No OpenAPI schema, input parameters, or output format are available.
- —Docs, pricing, and API pages on the site render only 'Connect wallet' with no usable content.
- —The endpoint path does not match any of the provider's publicly listed API routes.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on the Base network using USDC asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/endpoint-10
- —The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The provider lists endpoints under /api/v1/ and /api/v2/ paths for data, AI, finance, and utility services but does not list /api/endpoint-10https://lowpaymentfee.com