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. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no minimum commitments required.
The specific endpoint `/api/v1/payments/284` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. The x402 challenge confirms it is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0.02 USD) on Base (asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The payment scheme is "exact" with a 300-second timeout. No OpenAPI schema, detailed input/output documentation, or usage examples were found in the crawled pages — the docs, pricing, API, and README pages all rendered only a "Connect wallet" prompt with no additional content.
Without further documentation it is unclear what data or service this particular endpoint returns. The platform's broader catalog suggests it could be related to analytics, AI inference, financial data, or utility services, but the `/api/v1/payments/284` path does not map to any of the publicly listed API routes. Prospective users should test the endpoint with a small payment to discover its actual response format and content.
Capabilities
Use cases
- —Accessing premium API data with per-request USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API keys
- —Testing x402 payment protocol integrations against a live endpoint
Fit
Best for
- —Developers exploring x402 pay-per-call patterns
- —AI agents that need keyless, on-demand API access
- —Users who want to avoid subscriptions and pay only per request
Not for
- —Users who need detailed API documentation before committing
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/payments/284 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation of what this specific endpoint actually does, no OpenAPI schema, no input/output examples, and the crawled doc pages are empty. The endpoint path '/api/v1/payments/284' does not correspond to any publicly listed API route, making its purpose opaque.
Warnings
- —No documentation found — docs, pricing, API, and README pages all render only 'Connect wallet' with no content.
- —The endpoint path /api/v1/payments/284 does not match any of the publicly listed API routes on the homepage, so its actual functionality is unknown.
- —No OpenAPI spec or input/output schema available.
- —Response format and content are entirely undocumented.
Citations
- —The platform lists APIs at $0.02/request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The x402 challenge confirms the endpoint is live, accepts POST, and requires up to 20,000 base units of USDC on Base (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).https://lowpaymentfee.com/api/v1/payments/284
- —The docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no additional documentation.https://lowpaymentfee.com/docs