x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The specific resource `/api/v1/accounts/164` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC (USD Coin) on Base.
The x402 challenge confirms the endpoint is live and accepts exact-scheme payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. The endpoint accepts POST requests and returns `application/json`. No API keys or rate limits are advertised — access is purely pay-per-call.
However, the specific functionality behind `/api/v1/accounts/164` is unclear. The landing page lists many other endpoints (analytics, AI, finance, utilities) but does not document this particular accounts path. There is no OpenAPI spec, no request/response schema documentation, and the docs/pricing/README pages all render only a "Connect wallet" prompt with no further content. Without knowing what this endpoint actually returns, callers should treat it as an opaque premium resource until more documentation surfaces.
Capabilities
Use cases
- —Programmatic access to premium data or services without managing API keys
- —Agent-driven workflows that need on-demand paid API calls settled in USDC
- —Exploring x402 payment protocol integrations on Base
Fit
Best for
- —Developers experimenting with x402 pay-per-call patterns
- —AI agents that can autonomously pay for API access via crypto
- —Users who want no-signup, no-rate-limit API access
Not for
- —Users who need well-documented request/response schemas before integrating
- —High-volume consumers who need bulk pricing or subscription plans
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/164 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation for what /api/v1/accounts/164 actually does, no request/response schema, and no examples. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —The specific functionality of /api/v1/accounts/164 is undocumented — the landing page does not list an 'accounts' category among its APIs.
- —No OpenAPI spec, request schema, or response schema is available.
- —All documentation pages (docs, pricing, README, api) render only 'Connect wallet' with no useful content.
- —The purpose of this particular endpoint versus the other listed endpoints is unclear.
Citations
- —Endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/164
- —Platform advertises $0.02 per 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/164
- —Platform lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com