x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at lowpaymentfee.com provides access to a resource described as "Premium API Access" at the path `/api/v1/backups/2025-02`. It is part of a broader platform that offers dozens of x402-payable API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network.
The specific `/api/v1/backups/2025-02` path suggests a dated backup or snapshot resource (February 2025). The x402 challenge confirms the endpoint is live, accepting POST requests, and requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals → $0.02). Payment is made via the X-PAYMENT header with no API key or account registration needed. The payment recipient is `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, and the response MIME type is `application/json`.
The platform's landing page advertises a simple pay-per-use model with no rate limits, no minimums, and no commitments. However, documentation pages (`/docs`, `/pricing`, `/README`) all returned only a "Connect wallet" stub with no substantive content, so the actual data returned by this endpoint and the broader API suite is undocumented. Without request/response schemas or example payloads, it is unclear what the backup resource contains or what POST body (if any) is expected.
Capabilities
Use cases
- —Retrieving a February 2025 backup or data snapshot via a single paid request
- —Programmatic access to archived data without account registration
- —Agent-driven data retrieval with automatic USDC micropayment on Base
Fit
Best for
- —Developers or agents needing one-off access to backup/snapshot data without subscriptions
- —x402-compatible agents that can settle USDC payments on Base
- —Use cases where no-signup, pay-per-request access is preferred
Not for
- —Users who need detailed API documentation or guaranteed SLAs before purchasing
- —Bulk data retrieval where per-request pricing would be cost-prohibitive
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2025-02 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is zero documentation: no OpenAPI spec, no request/response schemas, no examples, and all doc pages are stubs. The specific purpose of the /backups/2025-02 resource is unknown. This is effectively a stub listing.
Warnings
- —All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no actual content.
- —No request body schema or response schema is available — it is unknown what data this endpoint returns.
- —The endpoint path '/api/v1/backups/2025-02' suggests a time-specific resource that may become stale or irrelevant.
- —The broader platform lists many endpoints but none have documented schemas or examples.
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/backups/2025-02
- —Platform advertises $0.02 per request, no API keys, no rate limits, no minimumshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/backups/2025-02
- —Documentation pages /docs, /pricing, /README returned only 'Connect wallet' stubshttps://lowpaymentfee.com/docs