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/2026-02`. It is part of a broader platform offering dozens of x402-protocol pay-per-call APIs 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/2026-02` path suggests a dated backup or snapshot resource (February 2026), though the platform provides no further documentation on what data this endpoint actually returns. The x402 challenge is live and well-formed: it requires an exact-scheme payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to `0x1A2B…85F3` with a 300-second timeout. The endpoint accepts POST requests and returns `application/json`.
Documentation is extremely thin — 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 usage examples. The platform's landing page confirms the pricing model and lists available endpoints but provides no detail on request parameters or response formats for any of them, including this one.
Capabilities
Use cases
- —Retrieving a dated backup or data snapshot for February 2026
- —Programmatic pay-per-call data access without API key management
- —Agent-driven data retrieval settled in USDC on Base L2
Fit
Best for
- —Agents or scripts that need keyless, pay-per-use data access
- —Users comfortable with x402 crypto-payment flows on Base
- —Scenarios where traditional API key provisioning is undesirable
Not for
- —Users who need detailed documentation or schema guarantees before integrating
- —High-volume use cases where per-request pricing adds up quickly
- —Anyone who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/backups/2026-02 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what this endpoint actually returns, no request/response schema, and no examples. The docs pages are empty beyond a wallet-connect prompt. The path name 'backups/2026-02' is opaque with no explanation.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
- —No OpenAPI spec or request/response schema provided for any endpoint on the platform.
- —The endpoint path '/api/v1/backups/2026-02' references a future date (Feb 2026) with no explanation of what data it contains.
- —Purpose and response format of this specific endpoint are entirely unknown; integration requires trial-and-error.
Citations
- —The endpoint returns a 402 challenge requiring 20,000 base-unit USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/backups/2026-02
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/backups/2026-02