x402-gated backup data endpoint on Base, payable in USDC per request.
What it does
This endpoint at lowpaymentfee.com provides access to a backup resource dated 2024-02 via the x402 payment protocol. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated behind x402 micropayments on the Base network using USDC.
The specific endpoint `/api/v1/backups/2024-02` returns JSON and costs $0.02 per request (20,000 base units of USDC with 6 decimals). Payment is made via the x402 "exact" scheme: callers include an X-PAYMENT header with a signed payment to the provider's address on Base. There are no API keys, no rate limits, and no subscription commitments — each call is independently settled on-chain.
The platform's landing page lists roughly 16 endpoints across four categories (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), all priced at $0.02 per request. However, documentation beyond the landing page is essentially empty (all doc/pricing/API pages just show "Connect wallet"), so the actual behavior, request parameters, and response schemas for this backup endpoint are unknown. The endpoint is confirmed live via a valid 402 challenge.
Capabilities
Use cases
- —Retrieving archived backup data from February 2024
- —Programmatic access to backup snapshots without API key management
- —Agent-driven data retrieval with on-chain micropayments
Fit
Best for
- —Agents or scripts that need keyless, pay-per-call access to backup data
- —Developers experimenting with x402 payment flows on Base
- —Scenarios requiring no subscription commitment for occasional data retrieval
Not for
- —Users who need detailed API documentation or request/response schemas before integrating
- —High-volume bulk data retrieval where per-request pricing adds up
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-02 \
-H "X-PAYMENT: <signed-x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of the 'backups/2024-02' resource is entirely opaque. All doc pages return only 'Connect wallet' with no content.
Warnings
- —No documentation available — all doc/pricing/API pages are empty ('Connect wallet' only)
- —No request or response schema provided; the actual data returned by this backup endpoint is unknown
- —The endpoint path suggests a date-specific backup resource but its contents and format are undocumented
- —No OpenAPI spec or ai-plugin manifest found
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC), maxAmountRequired 20000https://lowpaymentfee.com/api/v1/backups/2024-02
- —The platform lists ~16 endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories, all priced at $0.02 per requesthttps://lowpaymentfee.com
- —Platform advertises no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —Documentation, pricing, API, and README pages all render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs