Download September 2023 backup data via x402 micropayment on Base (USDC).
What it does
This endpoint at lowpaymentfee.com provides access to a downloadable backup file dated September 2023. It is part of a broader platform offering dozens of pay-per-request API endpoints across data analytics, AI/ML inference, finance, crypto, and utility categories — all gated behind the x402 payment protocol on the Base network using USDC.
The specific endpoint `/api/v1/backups/2023-09/download` accepts POST requests and returns an `application/json` response upon successful payment. The x402 challenge confirms the endpoint is live, requiring a maximum of $0.02 per request (20,000 base units of USDC with 6 decimals). Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on the Base L2 network, with a 300-second timeout window.
The platform advertises a simple pricing model of $0.02 per request across all endpoints, with no API keys, no rate limits, and no minimum commitments required. Documentation pages exist at `/docs`, `/pricing`, and `/api` but currently render only a wallet-connect prompt with no substantive content, making it difficult to determine the exact schema of request parameters or the structure of the backup data returned.
Capabilities
Use cases
- —Downloading archived backup data from September 2023
- —Programmatic retrieval of historical data snapshots via micropayment
- —Agent-driven data acquisition without API key registration
Fit
Best for
- —Users needing one-off access to archived September 2023 backup data
- —Agents that can settle x402 payments in USDC on Base
- —Developers who want keyless, pay-per-use data access
Not for
- —Users who need real-time or current data (this is a static 2023-09 backup)
- —Anyone without a Base-compatible USDC wallet
- —Bulk download scenarios where per-request pricing would be cost-inefficient
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-09/download \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Example
Request
{
"url": "https://lowpaymentfee.com/api/v1/backups/2023-09/download",
"method": "POST",
"headers": {
"X-PAYMENT": "<x402-payment-token>",
"Content-Type": "application/json"
}
}Endpoint
Quality
The x402 challenge is live and confirms pricing and network details, but there is no OpenAPI schema, no documentation content (all doc pages render only a wallet-connect prompt), no example responses, and no description of what the backup data actually contains. The endpoint path suggests a static archived resource but its contents and request parameters are entirely unknown.
Warnings
- —All documentation pages (/docs, /pricing, /api, /README) render only a wallet-connect prompt with no usable content
- —No OpenAPI or schema definition available for request or response bodies
- —The nature and contents of the 'backup' data are completely undocumented
- —Request body parameters (if any) are unknown
Citations
- —The endpoint returns a 402 challenge requiring USDC payment of 20000 base units (maxAmountRequired) on the Base networkhttps://lowpaymentfee.com/api/v1/backups/2023-09/download
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USD Coin)https://lowpaymentfee.com/api/v1/backups/2023-09/download