Download backup data for June 2026 via x402 micropayment on Base network.
What it does
This endpoint at lowpaymentfee.com provides access to a downloadable backup file for the period 2026-06, gated behind 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 catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced uniformly at $0.02 per request on the Base network. However, this specific endpoint is narrowly scoped: it serves a backup download for the June 2026 period. The exact contents and schema of the backup payload are not documented in the crawled material.
Because no OpenAPI spec, request/response examples, or detailed documentation were found (the docs, pricing, and README pages all rendered only a wallet-connect prompt), the precise request body format and response structure remain unknown. Callers should expect a JSON response but will need to experiment or contact the provider for schema details.
Capabilities
Use cases
- —Downloading periodic backup data for June 2026
- —Programmatic retrieval of archived datasets behind a micropayment wall
- —Agent-driven data acquisition with on-chain payment
Fit
Best for
- —Agents needing to fetch backup/archive data with instant crypto payment
- —Developers who want keyless, pay-per-use data downloads on Base
- —Automated pipelines that retrieve periodic data exports
Not for
- —Users who need detailed documentation or schema guarantees before calling
- —Bulk or high-volume downloads where per-request pricing adds up
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2026-06/download \
-H "X-PAYMENT: <x402_payment_proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect stub, and the purpose of the backup is unexplained. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —Docs, pricing, and README pages all render only a wallet-connect prompt with no useful content
- —The specific contents of the '2026-06 backup' are undocumented; purpose is unclear
- —The backup date (June 2026) is in the future relative to typical expectations, which is unusual
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/backups/2026-06/download
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/backups/2026-06/download
- —All APIs priced at $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —maxAmountRequired is 20000 base units (USDC 6 decimals = $0.02)https://lowpaymentfee.com/api/v1/backups/2026-06/download