x402-gated backup endpoint on Base, pay-per-call with USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/backups/14`. It is part of a broader platform offering 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 and settled in USDC on the Base network.
The specific `/api/v1/backups/14` endpoint accepts POST requests and returns `application/json`. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The max amount required is 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 given USDC's 6 decimals. The payment timeout is 300 seconds.
The platform advertises no API keys, no rate limits, and instant access. However, documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. The exact functionality of the `/api/v1/backups/14` resource is unclear from available material; the name suggests it may return or create a backup resource identified by ID 14, but this is speculative. No request body schema or response schema is documented.
Capabilities
Use cases
- —Accessing or creating backup data via a pay-per-call model without API keys
- —Integrating x402-compatible agents with backup/restore workflows
- —Programmatic data backup retrieval settled in USDC on Base
Fit
Best for
- —Agents or applications that support x402 payment protocol
- —Users who want keyless, pay-per-use API access
- —Developers building on Base who hold USDC
Not for
- —Users needing detailed API documentation or schemas before integrating
- —Applications requiring free or subscription-based backup services
- —Non-crypto users without USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/14 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what the /api/v1/backups/14 resource actually does, no request/response schema, and all doc pages are empty. The purpose of this specific endpoint is essentially unknown.
Warnings
- —The exact functionality of /api/v1/backups/14 is undocumented and unclear — 'backups' could mean anything.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content.
- —No request body schema or response schema is available.
- —No OpenAPI spec or AI plugin manifest found.
Citations
- —The endpoint returns a 402 challenge requiring USDC payment of 20000 base units on Base networkhttps://lowpaymentfee.com/api/v1/backups/14
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/backups/14
- —The platform offers endpoints across data analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com