x402-gated backup/data endpoint on Base, pay-per-call with USDC at $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/backups/7`. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated via the x402 payment protocol on the Base network, settled in USDC.
The specific `/api/v1/backups/7` endpoint accepts POST requests and returns `application/json`. The x402 challenge advertises a maximum amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each call. The payment timeout is 300 seconds.
Documentation is extremely sparse. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the `/api/v1/backups/7` endpoint actually returns. The endpoint name suggests it retrieves or creates a backup resource (item 7), but the actual payload structure is unknown. The platform lists many other endpoints at the same $0.02 price point, but none have documented schemas either.
Capabilities
Use cases
- —Retrieving or creating backup data via a single pay-per-call request
- —Agent-driven data access without API key provisioning
- —Programmatic USDC micropayment for on-demand API resources
Fit
Best for
- —Developers wanting keyless, pay-per-use API access on Base
- —AI agents that can settle x402 payments in USDC
- —Quick one-off data retrieval without subscription commitments
Not for
- —Users needing detailed API documentation or guaranteed SLAs
- —High-volume batch operations where per-request pricing adds up
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/7 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request/response schemas, no OpenAPI spec, and the docs pages are empty. The purpose of '/api/v1/backups/7' is unclear beyond its name. Effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are completely unknown
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content
- —The specific purpose of /api/v1/backups/7 is unclear; 'Premium API Access' is a generic label used across the platform
- —No examples or error handling documentation available
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/backups/7
- —Platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/backups/7
- —Platform offers endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com