x402-gated backup data endpoint on Base, paid per-request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a backup dataset dated 2023-08 via the x402 payment protocol. The endpoint is live and returns a standard 402 challenge requiring payment in USDC on the Base network. The cost per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made via the x402 "exact" scheme to a specified wallet address, with no API keys or rate limits required.
The broader lowpaymentfee.com platform advertises a suite of x402-gated APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request. However, this specific listing is for the `/api/v1/backups/2023-08` endpoint, which is described only as "Premium API Access" with no further documentation on what the backup data contains or its schema.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no examples available. The nature of the "backup" data returned by this endpoint is unclear.
Capabilities
Use cases
- —Retrieving archived backup data from August 2023
- —Programmatic access to stored datasets via micropayment
- —Agent-driven data retrieval with per-call USDC payment
Fit
Best for
- —Agents needing on-demand access to archived data without API key management
- —Developers exploring x402 payment protocol integrations
- —Use cases requiring pay-per-request data access on Base
Not for
- —Users who need detailed documentation or schema guarantees before purchasing
- —High-volume bulk data retrieval where per-request fees add up
- —Anyone needing to understand the backup contents before paying
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-08 \
-H "X-PAYMENT: <x402_payment_token>" \
-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 no documentation, no OpenAPI spec, no request/response schema, and no description of what the backup data actually contains. The docs pages are all empty wallet-connect stubs. This is 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 schema provided; the contents and structure of the backup data are completely unknown
- —The endpoint path suggests a static backup from August 2023; freshness and relevance are unclear
- —No examples of request body or response format available
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/backups/2023-08
- —maxAmountRequired is 20000 base units of USDC (USD Coin, 6 decimals) = $0.02https://lowpaymentfee.com/api/v1/backups/2023-08
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs