Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/accounts/47` sits within a broader platform that offers multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request.
The endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-payment scheme. The maxAmountRequired is 20,000 base units, which at 6 decimals equals $0.02 per call. No API keys or rate limits are advertised; access is granted purely through the x402 payment header. The endpoint accepts POST requests and returns application/json.
However, the specific functionality of `/api/v1/accounts/47` is unclear. The provider's landing page lists many endpoints across analytics, AI, finance, and utility categories, but the `/api/v1/accounts/` path is not among them. There is no OpenAPI spec, no detailed documentation (docs, pricing, and README pages all render only a "Connect wallet" prompt), and no request/response schema beyond the basic outputSchema in the x402 challenge. The actual data returned by this particular endpoint remains unknown.
Capabilities
Use cases
- —Accessing premium data or account information via a single micropayment
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic pay-per-use access settled on Base L2
Fit
Best for
- —Developers wanting keyless, pay-per-call API access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed documentation or OpenAPI specs before integrating
- —High-volume consumers who would benefit from bulk/subscription pricing
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/47 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation beyond a wallet-connect prompt, no request/response examples, and the specific purpose of /api/v1/accounts/47 is not documented anywhere on the site. This is effectively a stub listing.
Warnings
- —The specific endpoint /api/v1/accounts/47 is not listed among the provider's advertised APIs — its purpose is unclear.
- —No OpenAPI spec or detailed documentation is available; docs/pricing/README pages only show 'Connect wallet'.
- —Request and response schemas are unknown — no examples or field descriptions exist.
- —The broader platform lists many endpoint categories but none match the /accounts/ path.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units on Base network using USDChttps://lowpaymentfee.com/api/v1/accounts/47
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/47
- —Available API categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com