Check account balance via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns account balance information for account ID 184. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all gated behind the x402 payment protocol. The endpoint accepts POST requests and returns JSON.
Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). The provider advertises no API keys, no rate limits, and instant access — you simply attach an X-PAYMENT header with a valid x402 payment proof.
The broader lowpaymentfee.com platform lists endpoints across several categories: data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All are priced at $0.02 per request. However, this specific listing covers only the /api/v1/accounts/184/balance endpoint, which is not prominently documented on the site's landing page and appears to be an account-specific balance lookup rather than one of the general-purpose APIs.
Capabilities
Use cases
- —Querying account balance for account 184 on lowpaymentfee.com
- —Integrating pay-per-call balance checks into automated agent workflows
- —Demonstrating x402 payment protocol usage on Base network
Fit
Best for
- —Agents needing on-demand account balance data without API key management
- —Developers experimenting with x402 micropayment-gated endpoints
- —Low-volume, pay-as-you-go balance queries
Not for
- —High-volume balance monitoring where per-request fees add up
- —Users who need balance data for arbitrary account IDs (this endpoint is hardcoded to account 184)
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/184/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific endpoint — no request schema, no response schema, no examples. The crawled docs/pricing/API pages all returned only 'Connect wallet' with no useful content. The endpoint path suggests a narrow account-specific balance lookup that isn't listed among the site's advertised APIs.
Warnings
- —No request or response schema available for this endpoint
- —This endpoint (/api/v1/accounts/184/balance) is not listed among the provider's advertised APIs — it may be an internal or account-specific route
- —All documentation pages (docs, api, pricing, README) returned only 'Connect wallet' with no substantive content
- —No OpenAPI spec or AI plugin manifest found
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/184/balance
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/accounts/184/balance
- —All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com