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 path `/api/v1/accounts/7` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.
The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-payment scheme. The x402 challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals equals $0.02 USD per call. No API keys or rate limits are required; callers simply attach the x402 payment header to each request.
The provider's landing page lists 16+ endpoints across four categories (analytics/metrics, AI inference, finance/crypto data, and utility services), all at the same $0.02 price point. However, documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The exact functionality of `/api/v1/accounts/7` (labeled "Premium API Access") is unclear from the available material; it may be a generic account-info or profile endpoint, but this is speculative.
Capabilities
Use cases
- —Accessing premium API data without needing API key registration
- —Making one-off paid API calls settled in USDC on Base
- —Integrating pay-per-request endpoints into agent workflows
Fit
Best for
- —Developers wanting zero-signup, pay-as-you-go API access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed API documentation or OpenAPI specs before integrating
- —High-volume consumers who need bulk pricing or rate-limit guarantees
- —Users without access to USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/7 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in 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/7 is undocumented. This is effectively a stub listing.
Warnings
- —No OpenAPI specification or schema documentation available
- —All doc/pricing/API/README pages render only 'Connect wallet' with no content
- —The specific functionality of /api/v1/accounts/7 ('Premium API Access') is not documented anywhere in the crawled material
- —No request body schema or response schema is provided
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/7
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The provider offers 16+ endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/7