x402-gated backup endpoint on Base, pay-per-request with USDC at $0.02/call.
What it does
This endpoint at lowpaymentfee.com provides a pay-per-call "Premium API Access" resource at the path /api/v1/backups/48. It is part of a broader platform that offers dozens of x402-gated API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network.
The specific /api/v1/backups/48 endpoint accepts POST requests and returns application/json. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (the asset at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base, which has 6 decimals), equating to $0.02 per call. Payment is made via the x402 "exact" scheme with a 300-second timeout. No API keys or rate limits are advertised; access is granted purely through the x402 payment header.
The endpoint's specific functionality ("backups/48") is not documented beyond the generic label "Premium API Access." The broader site lists categories like metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more — but no documentation was retrievable (all doc/pricing/README pages only showed a "Connect wallet" prompt). Without further documentation, the exact request body schema and response format for this particular backup endpoint remain unknown.
Capabilities
Use cases
- —Retrieving or creating backup data via a single paid API call
- —Programmatic access to backup resources without API key management
- —Agent-driven workflows that need on-demand backup retrieval with crypto micropayments
Fit
Best for
- —Developers wanting keyless, pay-per-use API access settled in USDC on Base
- —AI agents that can handle x402 payment challenges natively
- —Users who prefer no-subscription, no-commitment API billing
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —Anyone requiring non-crypto payment methods
- —High-volume batch operations where per-request pricing may add up
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/48 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of /api/v1/backups/48 is unclear. All documentation pages returned only a 'Connect wallet' prompt with no usable content.
Warnings
- —No documentation available — all doc pages render only a 'Connect wallet' prompt
- —The specific function of /api/v1/backups/48 is undocumented; 'Premium API Access' is a generic label
- —No OpenAPI spec or request/response schema provided
- —No examples of expected input or output format
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/backups/48
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base has 6 decimals, so 20000 base units = $0.02https://lowpaymentfee.com