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 broad 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 commitments required.
The specific endpoint `/api/v1/accounts/131` is listed as "Premium API Access" but its exact functionality is not documented in the available crawl material. The platform's landing page enumerates sibling endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — but this particular accounts endpoint is not among those listed. It may represent an account-specific resource or a premium tier of access.
The x402 challenge confirms the endpoint is live, accepting POST requests, and requires a payment of up to 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this equates to $0.02 per call, consistent with the platform's advertised pricing. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No OpenAPI schema, detailed documentation, or example responses were found during the crawl — the docs, API, pricing, and README pages all rendered only a "Connect wallet" prompt.
Capabilities
Use cases
- —Accessing premium API resources with per-call USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic account data retrieval behind a paywall
Fit
Best for
- —Developers wanting zero-signup, pay-as-you-go API access
- —AI agents that can settle x402 payments autonomously on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —Applications requiring free or subscription-based access without per-call payments
- —Users without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/131 \
-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, but there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of /api/v1/accounts/131 is undocumented. The docs/pricing/README pages are all behind a wallet-connect gate and yield no useful content.
Warnings
- —The specific functionality of /api/v1/accounts/131 is not documented anywhere in the crawled material.
- —All documentation pages (docs, pricing, README, API) render only 'Connect wallet' with no accessible content.
- —No OpenAPI spec or request/response schema is available.
- —This endpoint is not listed among the platform's publicly advertised API catalog — its purpose is unclear.
Citations
- —Platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units of USDC (6 decimals = $0.02) on Base network.https://lowpaymentfee.com/api/v1/accounts/131
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.https://lowpaymentfee.com/api/v1/accounts/131
- —Platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories.https://lowpaymentfee.com