x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC — no API keys needed.
What it does
This endpoint at lowpaymentfee.com provides access to a backup resource (`/api/v1/backups/2024-06`) behind an x402 paywall. The provider operates a broader platform offering data & analytics, AI/ML inference, finance/Web3 data, and infrastructure utility APIs — all gated via the x402 protocol on the Base network, settled in USDC at $0.02 per request. No API keys, rate limits, or upfront commitments are required; callers simply attach an `X-PAYMENT` header with a valid x402 payment proof.
The specific endpoint listed here appears to serve a dated backup resource (June 2024). The x402 challenge confirms it is live, accepting POST requests, and requires a maximum of 20,000 base units of USDC (i.e., $0.02) per call. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, with a 300-second timeout window. The response MIME type is `application/json`.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the backup resource actually contains or what POST body it expects. The broader platform lists many endpoints across multiple categories, but none have documented schemas or usage examples in the crawled material.
Capabilities
Use cases
- —Retrieving a June 2024 backup dataset via a single paid request
- —Agent-driven data retrieval without pre-registration or API key management
- —Programmatic access to archived data with micropayment settlement on Base
Fit
Best for
- —Agents or scripts that need one-off data retrieval without account setup
- —Developers experimenting with x402 payment flows on Base
- —Accessing backup snapshots with minimal friction
Not for
- —Production workflows requiring documented request/response schemas
- —Use cases needing streaming or large-volume bulk data at lower per-call cost
- —Anyone who needs to understand the data format before paying
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-06 \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the backup resource contains, what request body is expected, or what the response looks like. No OpenAPI spec, no examples, and all doc pages are empty. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
- —No request or response schema provided; callers cannot know what POST body to send or what data is returned.
- —The resource path '/api/v1/backups/2024-06' suggests a dated snapshot; unclear if data is still relevant or maintained.
- —The broader platform lists many endpoints but none have documented schemas or usage examples.
Citations
- —The endpoint returns a 402 challenge requiring USDC payment of 20,000 base units ($0.02) on Base networkhttps://lowpaymentfee.com/api/v1/backups/2024-06
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Payment is to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with USDC asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/backups/2024-06
- —Docs, pricing, API, and README pages render only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs