Download May 2025 backup data via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides access to a downloadable backup file for May 2025 via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring a USDC payment on the Base network. The price is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. Payment is made via the x402 exact scheme with no API keys, rate limits, or subscriptions required.
The endpoint is part of a broader platform (lowpaymentfee.com) that offers numerous pay-per-call APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request. This specific endpoint (`/api/v1/backups/2025-05/download`) serves backup data and accepts POST requests. The response MIME type is `application/json`. Beyond the x402 challenge metadata and the landing page listing, documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail.
Because there is no OpenAPI schema, no request/response examples, and no documentation describing what the backup data contains or what parameters the POST body accepts, the actual utility and data format of this endpoint remain unclear. Prospective callers should be aware that they are paying $0.02 per call with limited information about what will be returned.
Capabilities
Use cases
- —Downloading a May 2025 backup dataset via a single micropayment
- —Programmatic retrieval of archived data without subscription or API key
- —Agent-initiated data purchase using x402 protocol on Base
Fit
Best for
- —Agents or scripts that need one-off backup data retrieval
- —Users who prefer pay-per-call with no account setup
- —x402-compatible wallets on the Base network
Not for
- —Users who need detailed documentation or schema before purchasing
- —Bulk or streaming data access where per-request fees add up
- —Anyone requiring non-USDC or non-Base payment options
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2025-05/download \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing, but there is no OpenAPI schema, no request/response examples, and the docs/pricing/README pages are all empty beyond a wallet-connect prompt. The purpose and contents of the backup are undocumented, making this effectively a stub listing.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or request/response schema provided; the structure of the POST body and the response payload are unknown.
- —The nature and contents of the 'May 2025 backup' are not described anywhere.
- —This is one endpoint among many on the platform; all appear identically priced at $0.02 with no further detail.
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring 20,000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/backups/2025-05/download
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/backups/2025-05/download
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no additional contenthttps://lowpaymentfee.com/docs