Download backup data files via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides access to a backup data file (specifically the 2023-01 backup) via an x402 payment challenge. The endpoint accepts POST requests and returns application/json content. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The hosting provider, lowpaymentfee.com, operates a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto market data, and infrastructure utilities. All endpoints share the same $0.02/request pricing model and x402 payment flow on the Base network. The specific endpoint listed here (`/api/v1/backups/2023-01/download`) appears to serve archived backup data from January 2023.
Documentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns a proper 402 challenge), but the actual content and structure of the backup data it returns is unknown.
Capabilities
Use cases
- —Downloading archived backup data from January 2023 via automated agent
- —Programmatic retrieval of backup files with per-request micropayment
- —Integrating backup download into a pipeline that settles payments on Base
Fit
Best for
- —Agents needing to retrieve specific archived backup data
- —Workflows requiring keyless, pay-per-use data downloads
- —Users comfortable with x402 crypto micropayments on Base
Not for
- —Users who need detailed documentation or schema guarantees before calling
- —Bulk or free backup retrieval without per-request payment
- —Non-crypto users who cannot settle USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-01/download \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live with a valid 402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The purpose of the backup data is unclear. Effectively a stub listing.
Warnings
- —No OpenAPI spec or schema documentation available
- —Docs, API, pricing, and README pages all render only 'Connect wallet' with no content
- —The actual content and structure of the backup file is completely undocumented
- —Purpose and provenance of '2023-01 backup' data is unknown — could be placeholder or demo content
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/backups/2023-01/download
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/backups/2023-01/download
- —All endpoints priced at $0.02/request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Provider offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com