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 "Premium API Access" behind an x402 payment wall on the Base network. The specific resource `/api/v1/backups/26` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request payable in USDC on Base.
The x402 challenge confirms the endpoint is live and accepts exact-scheme payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02. The endpoint accepts POST requests and returns `application/json`. No API keys or rate limits are advertised; access is granted purely via x402 payment headers.
However, the specific functionality of the `/api/v1/backups/26` resource is unclear. It is not listed among the provider's publicly documented API categories (analytics, AI, finance, infrastructure). The provider's docs, pricing, and other pages behind the landing page render only a "Connect wallet" prompt with no additional documentation. There is no OpenAPI spec, no request/response schema, and no description of what "backups/26" returns. This makes it difficult to determine the actual use case for this particular endpoint.
Capabilities
Use cases
- —Retrieving backup data via a single paid API call
- —Programmatic access to stored backup resource #26
- —Agent-driven data retrieval with micropayment settlement on Base
Fit
Best for
- —Agents needing pay-per-call data access without API key management
- —Developers experimenting with x402 payment protocol on Base
- —Automated workflows requiring on-demand backup retrieval
Not for
- —Users who need detailed documentation or schema before integrating
- —High-volume batch operations where per-request pricing is inefficient
- —Anyone needing non-USDC or non-Base payment options
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/26 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation for the /api/v1/backups/26 resource specifically — no request schema, no response schema, no description of what it returns. The docs pages are empty beyond a wallet connect prompt. The endpoint path is not listed in the provider's own catalog.
Warnings
- —The /api/v1/backups/26 endpoint is not listed in the provider's public API catalog — its purpose is unknown.
- —No OpenAPI spec, request schema, or response schema is available for this endpoint.
- —All documentation pages beyond the landing page render only 'Connect wallet' with no content.
- —The term 'backups' suggests data storage; the actual payload and behavior are unverified.
Citations
- —The provider lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure, all at $0.02 per requesthttps://lowpaymentfee.com
- —Pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —x402 challenge confirms USDC on Base with maxAmountRequired of 20000 base units (=$0.02)https://lowpaymentfee.com/api/v1/backups/26