Query FLR wallet balance via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns wallet balance information for the FLR (Flare) token. It is part of a broader platform offering dozens of pay-per-call API endpoints across data analytics, AI/ML inference, finance/Web3, and utility categories — all gated by the x402 payment protocol on the Base network.
The specific endpoint `/api/v1/wallet/FLR/balance` accepts POST requests and is priced at 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call (USDC uses 6 decimals). Payment is made inline via the X-PAYMENT header using the x402 "exact" scheme; no API keys or account registration are required. The payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, and the maximum timeout for payment settlement is 300 seconds.
The platform advertises uniform $0.02 pricing across all its endpoints, no rate limits, and no minimum commitments. Documentation pages (/docs, /pricing, /README) appear to require a wallet connection and do not expose further technical detail, so the exact request body schema and response format for this endpoint are unknown beyond what the x402 challenge reveals (POST, application/json output).
Capabilities
Use cases
- —Querying FLR (Flare) token wallet balances programmatically
- —Building portfolio trackers that need on-demand balance checks
- —Agent-driven workflows that need wallet balance data without API key management
- —Pay-as-you-go balance lookups without subscription overhead
Fit
Best for
- —Agents or bots that need one-off FLR balance queries without registration
- —Developers prototyping crypto dashboards who want instant API access
- —x402-compatible clients on the Base network
Not for
- —High-volume balance polling where $0.02/request adds up quickly
- —Users who need detailed transaction history or multi-token batch queries
- —Anyone without a Base-network USDC wallet for x402 payments
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/FLR/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Example
Request
{}Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation of request parameters or response format, and all doc pages just show 'Connect wallet'. The actual functionality (what input the POST body expects, what the response looks like) is entirely unknown.
Warnings
- —No documentation available — /docs, /pricing, and /README pages all require wallet connection and expose no content.
- —Request body schema and response format are completely undocumented; the example request is a guess.
- —The platform lists many endpoint categories but provides no technical specs for any of them.
- —FLR balance endpoint purpose is inferred from the URL path alone; no confirmation of actual functionality.
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/wallet/FLR/balance
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wallet/FLR/balance
- —Platform advertises $0.02 per request, no API keys, no rate limits, Base networkhttps://lowpaymentfee.com
- —Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com