x402-gated backup/data endpoint on Base, paying $0.02 per request in USDC.
What it does
lowpaymentfee.com hosts a collection of x402-protocol pay-per-request API endpoints on the Base network, settling payments in USDC. The specific endpoint at `/api/v1/backups/2024-07` is listed under "Premium API Access" and returns JSON data upon payment. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals.
The broader platform offers endpoints across several categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
This particular endpoint's path (`/api/v1/backups/2024-07`) suggests it serves backup or archived data from July 2024, though no detailed documentation or schema for the response body is available. The endpoint is live and responds with a proper x402 version 1 challenge on POST requests. Documentation pages on the site (docs, pricing, README) appear to require wallet connection and provide no additional readable content.
Capabilities
Use cases
- —Retrieving archived or backup data from July 2024 via a single paid request
- —Integrating pay-per-use data access into agent workflows without API key management
- —Programmatic access to premium data exports settled in USDC on Base
Fit
Best for
- —Agents or applications needing on-demand backup data without subscription overhead
- —Developers wanting keyless, crypto-settled API access on Base
- —Low-frequency data retrieval where per-call pricing is cost-effective
Not for
- —High-volume bulk data retrieval where per-request costs would accumulate
- —Users without a Base-compatible USDC wallet or x402 client
- —Anyone needing detailed API documentation or guaranteed SLAs
Quick start
# Requires an x402-compatible client to attach payment header
curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-07 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live with a valid x402 challenge, but there is no OpenAPI schema, no response examples, and documentation pages are empty (wallet-gated). The purpose of the specific /backups/2024-07 path is unclear beyond the generic 'Premium API Access' label. Effectively a stub listing.
Warnings
- —No OpenAPI or response schema available for this endpoint
- —Documentation, pricing, and README pages require wallet connection and yield no readable content
- —The exact data returned by /api/v1/backups/2024-07 is undocumented — 'backups' and '2024-07' are inferred from the URL path only
- —No rate limit or uptime guarantees documented
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/v1/backups/2024-07
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com