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 a specific account (account ID 116) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/accounts/116/balance` is labeled "Premium API Access" and accepts POST requests. Payment is handled via the x402 protocol: callers must include an X-PAYMENT header with a valid payment proof. The x402 challenge confirms the endpoint is live, requesting a maximum of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. No API keys or rate limits are advertised; access is gated purely by micropayment.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the balance response actually contains. The platform's landing page lists many endpoints but provides no technical detail beyond endpoint paths and prices. Treat this as a low-documentation, exploratory-stage service.
Capabilities
Use cases
- —Querying account balance data without needing API keys or subscriptions
- —Integrating pay-per-call balance lookups into agent workflows
- —Testing x402 micropayment protocol integrations on Base
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing keyless, pay-per-call API access
- —Low-volume balance queries without subscription overhead
Not for
- —High-volume balance monitoring requiring bulk pricing
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —Production systems requiring SLA guarantees or support
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/116/balance \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the endpoint's actual functionality ('Premium API Access' for an account balance) is vaguely described. Docs pages return only 'Connect wallet' with no content.
Warnings
- —No OpenAPI schema or request/response documentation available
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no useful content
- —The specific purpose and response format of /api/v1/accounts/116/balance is unknown — 'Premium API Access' is a generic label
- —No SLA, rate limit, or support information provided
Citations
- —The endpoint returns HTTP 402 with x402 challenge requesting 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/116/balance
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/accounts/116/balance
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com