Download backup data for April 2026 via x402 micropayment on Base network.
What it does
This endpoint at lowpaymentfee.com provides access to a downloadable backup file for the period 2026-04, gated behind an x402 payment challenge. The endpoint accepts POST requests and returns application/json content upon successful payment of $0.02 in USDC on the Base network.
The provider lowpaymentfee.com hosts a suite of pay-per-request APIs spanning data analytics, AI/ML inference, finance, and utility services — all priced at $0.02 per call with no API keys, no rate limits, and no commitments required. Payment is settled on-chain via the x402 protocol using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. The specific endpoint `/api/v1/backups/2026-04/download` appears to serve a backup or data export for April 2026, though the exact contents and schema of the response are not documented beyond the MIME type.
Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled content.
Capabilities
Use cases
- —Downloading periodic backup data files programmatically
- —Automated retrieval of archived datasets for April 2026
- —Agent-driven data acquisition with on-chain micropayment
Fit
Best for
- —Agents needing on-demand backup file retrieval without API keys
- —Workflows requiring pay-per-use data downloads on Base
- —Automated systems that settle payments in USDC on L2
Not for
- —Users needing free or subscription-based backup access
- —Applications requiring detailed API documentation before integration
- —High-frequency bulk downloads where per-request pricing is inefficient
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2026-04/download \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the purpose of the backup file is unexplained. Effectively a stub listing.
Warnings
- —No OpenAPI spec or schema documentation available
- —Docs/pricing/API pages render only 'Connect wallet' with no technical content
- —Exact contents and format of the backup response are unknown
- —The backup period '2026-04' is in the future relative to typical expectations, which is unusual
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/backups/2026-04/download
- —All APIs priced at $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/backups/2026-04/download