x402-gated backup data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a backup resource dated 2023-02 via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments.
The specific endpoint `/api/v1/backups/2023-02` is labeled "Premium API Access" and accepts POST requests. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) via the x402 exact-payment scheme. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 USD per call. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. The exact nature of the backup data returned by this endpoint is unclear; the description simply says "Premium API Access" without specifying the data format or contents. The endpoint is confirmed live via a valid 402 challenge, but without documentation or example responses, the actual utility of this specific backup endpoint remains uncertain.
Capabilities
Use cases
- —Retrieving archived backup data from February 2023
- —Programmatic access to backup resources without API key management
- —Agent-driven data retrieval with per-call USDC micropayments
Fit
Best for
- —Agents needing on-demand backup data access with crypto micropayments
- —Developers who want keyless API access settled on Base
- —Use cases requiring no rate limits or subscription commitments
Not for
- —Users who need detailed documentation or schema guarantees before integrating
- —Anyone without a Base-compatible USDC wallet
- —High-frequency bulk data retrieval where $0.02/call adds up significantly
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-02 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, documentation is effectively absent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no example request/response, and no description of what the backup data actually contains. The listing is largely a stub.
Warnings
- —Documentation pages (/docs, /api, /pricing, /README) all render only 'Connect wallet' with no usable content.
- —The exact contents and schema of the backup data returned by this endpoint are unknown.
- —No OpenAPI spec or output schema is provided beyond the basic x402 challenge metadata.
- —The purpose of a 'backups/2023-02' endpoint is unclear — it may be test/demo data.
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/backups/2023-02
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.https://lowpaymentfee.com/api/v1/backups/2023-02
- —Documentation, API, pricing, and README pages all render only a 'Connect wallet' prompt.https://lowpaymentfee.com/docs